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Sökning: WFRF:(Ferreira Cláudia)

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1.
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2.
  • Neves, Ana Luisa, et al. (författare)
  • Determinants of the Use of Health and Fitness Mobile Apps by Patients With Asthma : Secondary Analysis of Observational Studies
  • 2021
  • Ingår i: Journal of Medical Internet Research. - : JMIR Publications. - 1438-8871. ; 23:9
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Health and fitness apps have potential benefits to improve self-management and disease control among patients with asthma. However, inconsistent use rates have been reported across studies, regions, and health systems. A better understanding of the characteristics of users and nonusers is critical to design solutions that are effectively integrated in patients' daily lives, and to ensure that these equitably reach out to different groups of patients, thus improving rather than entrenching health inequities. Objective: This study aimed to evaluate the use of general health and fitness apps by patients with asthma and to identify determinants of usage. Methods: A secondary analysis of the INSPIRERS observational studies was conducted using data from face-to-face visits. Patients with a diagnosis of asthma were included between November 2017 and August 2020. Individual-level data were collected, including age, gender, marital status, educational level, health status, presence of anxiety and depression, postcode, socioeconomic level, digital literacy, use of health services, and use of health and fitness apps. Multivariate logistic regression was used to model the probability of being a health and fitness app user. Statistical analysis was performed in R. Results: A total of 526 patients attended a face-to-face visit in the 49 recruiting centers and 514 had complete data. Most participants were <= 40 years old (66.4%), had at least 10 years of education (57.4%), and were in the 3 higher quintiles of the socioeconomic deprivation index (70.1%). The majority reported an overall good health status (visual analogue scale [VAS] score>70 in 93.1%) and the prevalence of anxiety and depression was 34.3% and 11.9%, respectively. The proportion of participants who reported using health and fitness mobile apps was 41.1% (n=211). Multivariate models revealed that single individuals and those with more than 10 years of education are more likely to use health and fitness mobile apps (adjusted odds ratio [aOR] 2.22, 95%CI 1.05-4.75 and aOR 1.95, 95%CI 1.12-3.45, respectively). Higher digital literacy scores were also associated with higher odds of being a user of health and fitness apps, with participants in the second, third, and fourth quartiles reporting aORs of 6.74 (95%CI 2.90-17.40), 10.30 (95%CI 4.28-27.56), and 11.52 (95%CI 4.78-30.87), respectively. Participants with depression symptoms had lower odds of using health and fitness apps (aOR 0.32, 95%CI 0.12-0.83). Conclusions: A better understanding of the barriers and enhancers of app use among patients with lower education, lower digital literacy, or depressive symptoms is key to design tailored interventions to ensure a sustained and equitable use of these technologies. Future studies should also assess users' general health-seeking behavior and their interest and concerns specifically about digital tools. These factors may impact both initial engagement and sustained use.
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3.
  • ter Steege, Hans, et al. (författare)
  • Mapping density, diversity and species-richness of the Amazon tree flora
  • 2023
  • Ingår i: COMMUNICATIONS BIOLOGY. - 2399-3642. ; 6:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution. A study mapping the tree species richness in Amazonian forests shows that soil type exerts a strong effect on species richness, probably caused by the areas of these forest types. Cumulative water deficit, tree density and temperature seasonality affect species richness at a regional scale.
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4.
  • Householder, John Ethan, et al. (författare)
  • One sixth of Amazonian tree diversity is dependent on river floodplains
  • 2024
  • Ingår i: NATURE ECOLOGY & EVOLUTION. - 2397-334X.
  • Tidskriftsartikel (refereegranskat)abstract
    • Amazonia's floodplain system is the largest and most biodiverse on Earth. Although forests are crucial to the ecological integrity of floodplains, our understanding of their species composition and how this may differ from surrounding forest types is still far too limited, particularly as changing inundation regimes begin to reshape floodplain tree communities and the critical ecosystem functions they underpin. Here we address this gap by taking a spatially explicit look at Amazonia-wide patterns of tree-species turnover and ecological specialization of the region's floodplain forests. We show that the majority of Amazonian tree species can inhabit floodplains, and about a sixth of Amazonian tree diversity is ecologically specialized on floodplains. The degree of specialization in floodplain communities is driven by regional flood patterns, with the most compositionally differentiated floodplain forests located centrally within the fluvial network and contingent on the most extraordinary flood magnitudes regionally. Our results provide a spatially explicit view of ecological specialization of floodplain forest communities and expose the need for whole-basin hydrological integrity to protect the Amazon's tree diversity and its function.
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5.
  • Luize, Bruno Garcia, et al. (författare)
  • Geography and ecology shape the phylogenetic composition of Amazonian tree communities
  • 2024
  • Ingår i: JOURNAL OF BIOGEOGRAPHY. - 0305-0270 .- 1365-2699.
  • Tidskriftsartikel (refereegranskat)abstract
    • Aim: Amazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types. Location: Amazonia. Taxon: Angiosperms (Magnoliids; Monocots; Eudicots). Methods: Data for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran's eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny. Results: In the terra firme and v & aacute;rzea forest types, the phylogenetic composition varies by geographic region, but the igap & oacute; and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R-2 = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R-2 = 28%). A greater number of lineages were significant indicators of geographic regions than forest types. Main Conclusion: Numerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions.
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6.
  • Amaral, Rita, et al. (författare)
  • Profiling Persistent Asthma Phenotypes in Adolescents : A Longitudinal Diagnostic Evaluation from the INSPIRERS Studies
  • 2021
  • Ingår i: International Journal of Environmental Research and Public Health. - : MDPI. - 1661-7827 .- 1660-4601. ; 18:3
  • Tidskriftsartikel (refereegranskat)abstract
    • We aimed to identify persistent asthma phenotypes among adolescents and to evaluate longitudinally asthma-related outcomes across phenotypes. Adolescents (13-17 years) from the prospective, observational, and multicenter INSPIRERS studies, conducted in Portugal and Spain, were included (n = 162). Latent class analysis was applied to demographic, environmental, and clinical variables, collected at a baseline medical visit. Longitudinal differences in clinical variables were assessed at a 4-month follow-up telephone contact (n = 128). Three classes/phenotypes of persistent asthma were identified. Adolescents in class 1 (n = 87) were highly symptomatic at baseline and presented the highest number of unscheduled healthcare visits per month and exacerbations per month, both at baseline and follow-up. Class 2 (n = 32) was characterized by female predominance, more frequent obesity, and uncontrolled upper/lower airways symptoms at baseline. At follow-up, there was a significant increase in the proportion of controlled lower airway symptoms (p < 0.001). Class 3 (n = 43) included mostly males with controlled lower airways symptoms; at follow-up, while keeping symptom control, there was a significant increase in exacerbations/month (p = 0.015). We have identified distinct phenotypes of persistent asthma in adolescents with different patterns in longitudinal asthma-related outcomes, supporting the importance of profiling asthma phenotypes in predicting disease outcomes that might inform targeted interventions and reduce future risk.
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7.
  • Simoes Cunha, Mafalda, et al. (författare)
  • Symptoms of anxiety and depression in patients with persistent asthma : a cross-sectional analysis of the INSPIRERS studies
  • 2023
  • Ingår i: BMJ Open. - : BMJ Publishing Group Ltd. - 2044-6055. ; 13:5
  • Tidskriftsartikel (refereegranskat)abstract
    • ObjectivesAnxiety and depression are relevant comorbidities in asthma, but, in Portugal and Spain, data on this topic are scarce. We assessed, in patients with asthma, the frequency of anxiety and depression using the Hospital Anxiety and Depression Scale (HADS) and the European Quality of Life Five Dimension Questionnaire (EQ-5D); the level of agreement between these questionnaires, and the factors associated with these symptoms.MethodsThis is a secondary analysis of the INSPIRERS studies. A total of 614 adolescents and adults with persistent asthma (32.6 +/- 16.9 years, 64.7% female) were recruited from 30 primary care centres and 32 allergy, pulmonology and paediatric clinics. Demographic and clinical characteristics, HADS and EQ-5D were collected. A score >= 8 on Hospital Anxiety and Depression Scale-Anxiety/Hospital Anxiety and Depression Scale-Depression or a positive answer to EQ-5D item 5 indicated the presence of these symptoms. Agreement was determined by Cohen's kappa. Two multivariable logistic regressions were built.ResultsAccording to HADS, 36% of the participants had symptoms of anxiety and 12% of depression. According to EQ-5D, 36% of the participants had anxiety/depression. The agreement between questionnaires in identifying anxiety/depression was moderate (k=0.55, 95% CI 0.48 to 0.62). Late asthma diagnosis, comorbidities and female gender were predictors of anxiety/depression, while better asthma control, health-related quality of life and perception of health were associated with lower odds for anxiety/depression.ConclusionAt least 1/3 of the patients with persistent asthma experience symptoms of anxiety/depression, showing the relevance of screening these disorders in patients with asthma. EQ-5D and HADS questionnaires showed a moderate agreement in the identification of anxiety/depression symptoms. The identified associated factors need to be further investigated in long-term studies.
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8.
  • Jacome, Cristina, et al. (författare)
  • Monitoring Adherence to Asthma Inhalers Using the InspirerMundi App : Analysis of Real-World, Medium-Term Feasibility Studies
  • 2021
  • Ingår i: Frontiers in Medical Technology. - : Frontiers Media S.A.. - 2673-3129. ; 3
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Poor medication adherence is a major challenge in asthma and objective assessment of inhaler adherence is needed. InspirerMundi app aims to monitor inhaler adherence while turning it into a positive experience through gamification and social support.Objective: We assessed the medium-term feasibility of the InspirerMundi app to monitor inhaler adherence in real-world patients with persistent asthma (treated with daily inhaled medication). In addition, we attempted to identify the characteristics of the patients related to higher app use.Methods: Two real-world multicenter observational studies, with one initial face-to-face visit and a 4-month telephone interview, were conducted in 29 secondary care centers from Portugal. During an initial face-to-face visit, patients were invited to use the app daily to register their asthma medication intakes. A scheduled intake was considered taken when patients took a photo of the medication (inhaler, blister, or others) using the image-based medication detection tool. Medication adherence was calculated as the number of doses taken as a percentage of the number scheduled. Interacting with the app =30 days was used as the cut-off for higher app use.Results: A total of 114 patients {median 20 [percentile 25 to percentile 75 (P25-P75) 16-36] years, 62% adults} were invited, 107 (94%) installed the app and 83 (73%) completed the 4-month interview. Patients interacted with the app for a median of 18 [3-45] days, translated on a median use rate of 15 [3-38]%. Median inhaler adherence assessed through the app was 34 [4-73]% when considering all scheduled inhalations for the study period. Inhaler adherence assessed was not significantly correlated with self-reported estimates. Median adherence for oral and other medication was 41 [6-83]% and 43 [3-73]%, respectively. Patients with higher app use were slightly older (p = 0.012), more frequently taking medication for other health conditions (p = 0.040), and more frequently prescribed long-acting muscarinic antagonists (LAMA, p = 0.024). After 4 months, Control of Allergic Rhinitis and Asthma Test (CARAT) scores improved (p < 0.001), but no differences between patients interacting with the app for 30 days or less were seen.Conclusions: The InspirerMundi app was feasible to monitor inhaler adherence in patients with persistent asthma. The persistent use of this mHealth technology varies widely. A better understanding of characteristics related to higher app use is still needed before effectiveness studies are undertaken.
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9.
  • Bernal, Ximena E., et al. (författare)
  • Empowering Latina scientists
  • 2019
  • Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 363:6429, s. 825-826
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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10.
  • Berndt, Sonja I., et al. (författare)
  • Genome-wide meta-analysis identifies 11 new loci for anthropometric traits and provides insights into genetic architecture
  • 2013
  • Ingår i: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 45:5, s. 501-U69
  • Tidskriftsartikel (refereegranskat)abstract
    • Approaches exploiting trait distribution extremes may be used to identify loci associated with common traits, but it is unknown whether these loci are generalizable to the broader population. In a genome-wide search for loci associated with the upper versus the lower 5th percentiles of body mass index, height and waist-to-hip ratio, as well as clinical classes of obesity, including up to 263,407 individuals of European ancestry, we identified 4 new loci (IGFBP4, H6PD, RSRC1 and PPP2R2A) influencing height detected in the distribution tails and 7 new loci (HNF4G, RPTOR, GNAT2, MRPS33P4, ADCY9, HS6ST3 and ZZZ3) for clinical classes of obesity. Further, we find a large overlap in genetic structure and the distribution of variants between traits based on extremes and the general population and little etiological heterogeneity between obesity subgroups.
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11.
  • Evangelou, Evangelos, et al. (författare)
  • Genetic analysis of over 1 million people identifies 535 new loci associated with blood pressure traits.
  • 2018
  • Ingår i: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 50:10, s. 1412-1425
  • Tidskriftsartikel (refereegranskat)abstract
    • High blood pressure is a highly heritable and modifiable risk factor for cardiovascular disease. We report the largest genetic association study of blood pressure traits (systolic, diastolic and pulse pressure) to date in over 1 million people of European ancestry. We identify 535 novel blood pressure loci that not only offer new biological insights into blood pressure regulation but also highlight shared genetic architecture between blood pressure and lifestyle exposures. Our findings identify new biological pathways for blood pressure regulation with potential for improved cardiovascular disease prevention in the future.
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12.
  • Ferreira, Cláudia, et al. (författare)
  • Randomized controlled trial of an Acceptance and Commitment Therapy and compassion-based group intervention for persons with inflammatory bowel disease : the LIFEwithIBD intervention
  • 2024
  • Ingår i: Frontiers in Psychology. - : Frontiers Media S.A.. - 1664-1078. ; 15
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: This study tested the acceptability and efficacy of an Acceptance and Commitment Therapy and compassion-based intervention (LIFEwithIBD) in people with IBD through a two-arm RCT.Methods: Participants were recruited at the Gastroenterology Department of the Coimbra University Hospital between June and September 2019. Of the 355 patients screened, those who accepted to participate were randomly assigned to one of two conditions: experimental group (LIFEwithIBD; n = 25) or control group (waitlist; n = 29). Participants completed self-report measures at baseline (T0), post-intervention (T1), and 3-month (T2) and 12-month (T3) follow-ups. Intervention acceptability was assessed. Efficacy was examined using intent-to-treat ANCOVA at post-intervention after adjusting for baseline values of depressive, anxiety, and stress symptoms (primary outcomes). Linear mixed models for all longitudinal outcomes were also analysed. Inflammatory and disease biomarkers were determined at T0 and T3.Results: Acceptability results revealed a high level of satisfaction and perceived usefulness regarding the intervention. Both groups experienced a significant decrease in stress symptoms and IBD symptom perception at T1. No significant differences were observed at follow-up for the primary outcomes. The experimental group reported significantly lower Crohn’s disease Symptom severity at T2 than the control group. Post-hoc analyses designed to mitigate floor effects revealed substantial treatment effects for the experimental group regarding anxiety symptoms. No significant differences were observed in clinical biomarkers from T0 to T3.Conclusion: The LIFEwithIBD intervention shows promising, although preliminary, benefits for managing disease activity and reducing anxiety symptoms in IBD patients with high severity of psychological distress.
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13.
  • Flannick, Jason, et al. (författare)
  • Data Descriptor : Sequence data and association statistics from 12,940 type 2 diabetes cases and controls
  • 2017
  • Ingår i: Scientific Data. - : Springer Science and Business Media LLC. - 2052-4463. ; 4
  • Tidskriftsartikel (refereegranskat)abstract
    • To investigate the genetic basis of type 2 diabetes (T2D) to high resolution, the GoT2D and T2D-GENES consortia catalogued variation from whole-genome sequencing of 2,657 European individuals and exome sequencing of 12,940 individuals of multiple ancestries. Over 27M SNPs, indels, and structural variants were identified, including 99% of low-frequency (minor allele frequency [MAF] 0.1-5%) non-coding variants in the whole-genome sequenced individuals and 99.7% of low-frequency coding variants in the whole-exome sequenced individuals. Each variant was tested for association with T2D in the sequenced individuals, and, to increase power, most were tested in larger numbers of individuals (> 80% of low-frequency coding variants in similar to ~82 K Europeans via the exome chip, and similar to ~90% of low-frequency non-coding variants in similar to ~44 K Europeans via genotype imputation). The variants, genotypes, and association statistics from these analyses provide the largest reference to date of human genetic information relevant to T2D, for use in activities such as T2D-focused genotype imputation, functional characterization of variants or genes, and other novel analyses to detect associations between sequence variation and T2D.
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14.
  • Fuchsberger, Christian, et al. (författare)
  • The genetic architecture of type 2 diabetes
  • 2016
  • Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 536:7614, s. 41-47
  • Tidskriftsartikel (refereegranskat)abstract
    • The genetic architecture of common traits, including the number, frequency, and effect sizes of inherited variants that contribute to individual risk, has been long debated. Genome-wide association studies have identified scores of common variants associated with type 2 diabetes, but in aggregate, these explain only a fraction of the heritability of this disease. Here, to test the hypothesis that lower-frequency variants explain much of the remainder, the GoT2D and T2D-GENES consortia performed whole-genome sequencing in 2,657 European individuals with and without diabetes, and exome sequencing in 12,940 individuals from five ancestry groups. To increase statistical power, we expanded the sample size via genotyping and imputation in a further 111,548 subjects. Variants associated with type 2 diabetes after sequencing were overwhelmingly common and most fell within regions previously identified by genome-wide association studies. Comprehensive enumeration of sequence variation is necessary to identify functional alleles that provide important clues to disease pathophysiology, but large-scale sequencing does not support the idea that lower-frequency variants have a major role in predisposition to type 2 diabetes.
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15.
  • Heid, Iris M, et al. (författare)
  • Meta-analysis identifies 13 new loci associated with waist-hip ratio and reveals sexual dimorphism in the genetic basis of fat distribution
  • 2010
  • Ingår i: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 42:11, s. 949-960
  • Tidskriftsartikel (refereegranskat)abstract
    • Waist-hip ratio (WHR) is a measure of body fat distribution and a predictor of metabolic consequences independent of overall adiposity. WHR is heritable, but few genetic variants influencing this trait have been identified. We conducted a meta-analysis of 32 genome-wide association studies for WHR adjusted for body mass index (comprising up to 77,167 participants), following up 16 loci in an additional 29 studies (comprising up to 113,636 subjects). We identified 13 new loci in or near RSPO3, VEGFA, TBX15-WARS2, NFE2L3, GRB14, DNM3-PIGC, ITPR2-SSPN, LY86, HOXC13, ADAMTS9, ZNRF3-KREMEN1, NISCH-STAB1 and CPEB4 (P = 1.9 × 10⁻⁹ to P = 1.8 × 10⁻⁴⁰) and the known signal at LYPLAL1. Seven of these loci exhibited marked sexual dimorphism, all with a stronger effect on WHR in women than men (P for sex difference = 1.9 × 10⁻³ to P = 1.2 × 10⁻¹³). These findings provide evidence for multiple loci that modulate body fat distribution independent of overall adiposity and reveal strong gene-by-sex interactions.
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16.
  • Jacome, Cristina, et al. (författare)
  • Feasibility and Acceptability of an Asthma App to Monitor Medication Adherence : Mixed Methods Study
  • 2021
  • Ingår i: JMIR mhealth and uhealth. - : JMIR Publications. - 2291-5222. ; 9:5
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Poor medication adherence is a major challenge in asthma, and objective assessment of inhaler adherence is needed. The InspirerMundi app aims to monitor adherence while providing a positive experience through gamification and social support. Objective: This study aimed to evaluate the feasibility and acceptability of the InspirerMundi app to monitor medication adherence in adolescents and adults with persistent asthma (treated with daily inhaled medication). Methods: A 1-month mixed method multicenter observational study was conducted in 26 secondary care centers from Portugal and Spain. During an initial face-to-face visit, physicians reported patients' asthma therapeutic plan in a structured questionnaire. During the visits, patients were invited to use the app daily to register their asthma medication intakes. A scheduled intake was considered taken when patients registered the intake (inhaler, blister, or other drug formulation) by using the image-based medication detection tool. At 1 month, patients were interviewed by phone, and app satisfaction was assessed on a 1 (low) to 5 (high) scale. Patients were also asked to point out the most and least preferred app features and make suggestions for future app improvements. Results: A total of 107 patients (median 27 [P25-P75 14-40] years) were invited, 92.5% (99/107) installed the app, and 73.8% (79/107) completed the 1-month interview. Patients interacted with the app a median of 9 (P25-P75 1-24) days. At least one medication was registered in the app by 78% (77/99) of patients. A total of 53% (52/99) of participants registered all prescribed inhalers, and 34% (34/99) registered the complete asthma therapeutic plan. Median medication adherence was 75% (P25-P75 25%-90%) for inhalers and 82% (P25-P75 50%-94%) for other drug formulations. Patients were globally satisfied with the app, with 75% (59/79) scoring >= 4,; adherence monitoring, symptom monitoring, and gamification features being the most highly scored components; and the medication detection tool among the lowest scored. A total of 53% (42/79) of the patients stated that the app had motivated them to improve adherence to inhaled medication and 77% (61/79) would recommend the app to other patients. Patient feedback was reflected in 4 major themes: medication-related features (67/79, 85%), gamification and social network (33/79, 42%), symptom monitoring and physician communication (21/79, 27%), and other aspects (16/79, 20%). Conclusions: The InspirerMundi app was feasible and acceptable to monitor medication adherence in patients with asthma. Based on patient feedback and to increase the registering of medications, the therapeutic plan registration and medication detection tool were redesigned. Our results highlight the importance of patient participation to produce a patient-centered and engaging mHealth asthma app.
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17.
  • Kraja, Aldi T., et al. (författare)
  • New Blood Pressure-Associated Loci Identified in Meta-Analyses of 475000 Individuals
  • 2017
  • Ingår i: Circulation. - : LIPPINCOTT WILLIAMS & WILKINS. - 1942-325X .- 1942-3268. ; 10:5
  • Tidskriftsartikel (refereegranskat)abstract
    • Background - Genome-wide association studies have recently identified >400 loci that harbor DNA sequence variants that influence blood pressure (BP). Our earlier studies identified and validated 56 single nucleotide variants (SNVs) associated with BP from meta-analyses of exome chip genotype data. An additional 100 variants yielded suggestive evidence of association.Methods and Results - Here, we augment the sample with 140886 European individuals from the UK Biobank, in whom 77 of the 100 suggestive SNVs were available for association analysis with systolic BP or diastolic BP or pulse pressure. We performed 2 meta-analyses, one in individuals of European, South Asian, African, and Hispanic descent (pan-ancestry, approximate to 475000), and the other in the subset of individuals of European descent (approximate to 423000). Twenty-one SNVs were genome-wide significant (P<5x10(-8) ) for BP, of which 4 are new BP loci: rs9678851 (missense, SLC4A1AP), rs7437940 (AFAP1), rs13303 (missense, STAB1), and rs1055144 (7p15.2). In addition, we identified a potentially independent novel BP-associated SNV, rs3416322 (missense, SYNPO2L) at a known locus, uncorrelated with the previously reported SNVs. Two SNVs are associated with expression levels of nearby genes, and SNVs at 3 loci are associated with other traits. One SNV with a minor allele frequency <0.01, (rs3025380 at DBH) was genome-wide significant.Conclusions - We report 4 novel loci associated with BP regulation, and 1 independent variant at an established BP locus. This analysis highlights several candidate genes with variation that alter protein function or gene expression for potential follow-up.
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18.
  • Locke, Adam E, et al. (författare)
  • Genetic studies of body mass index yield new insights for obesity biology.
  • 2015
  • Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 518:7538, s. 197-401
  • Tidskriftsartikel (refereegranskat)abstract
    • Obesity is heritable and predisposes to many diseases. To understand the genetic basis of obesity better, here we conduct a genome-wide association study and Metabochip meta-analysis of body mass index (BMI), a measure commonly used to define obesity and assess adiposity, in up to 339,224 individuals. This analysis identifies 97 BMI-associated loci (P < 5 × 10(-8)), 56 of which are novel. Five loci demonstrate clear evidence of several independent association signals, and many loci have significant effects on other metabolic phenotypes. The 97 loci account for ∼2.7% of BMI variation, and genome-wide estimates suggest that common variation accounts for >20% of BMI variation. Pathway analyses provide strong support for a role of the central nervous system in obesity susceptibility and implicate new genes and pathways, including those related to synaptic function, glutamate signalling, insulin secretion/action, energy metabolism, lipid biology and adipogenesis.
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19.
  • Nguyen, Thanh N, et al. (författare)
  • Global Impact of the COVID-19 Pandemic on Stroke Volumes and Cerebrovascular Events: A 1-Year Follow-up.
  • 2023
  • Ingår i: Neurology. - 1526-632X. ; 100:4
  • Tidskriftsartikel (refereegranskat)abstract
    • Declines in stroke admission, IV thrombolysis (IVT), and mechanical thrombectomy volumes were reported during the first wave of the COVID-19 pandemic. There is a paucity of data on the longer-term effect of the pandemic on stroke volumes over the course of a year and through the second wave of the pandemic. We sought to measure the effect of the COVID-19 pandemic on the volumes of stroke admissions, intracranial hemorrhage (ICH), IVT, and mechanical thrombectomy over a 1-year period at the onset of the pandemic (March 1, 2020, to February 28, 2021) compared with the immediately preceding year (March 1, 2019, to February 29, 2020).We conducted a longitudinal retrospective study across 6 continents, 56 countries, and 275 stroke centers. We collected volume data for COVID-19 admissions and 4 stroke metrics: ischemic stroke admissions, ICH admissions, IVT treatments, and mechanical thrombectomy procedures. Diagnoses were identified by their ICD-10 codes or classifications in stroke databases.There were 148,895 stroke admissions in the 1 year immediately before compared with 138,453 admissions during the 1-year pandemic, representing a 7% decline (95% CI [95% CI 7.1-6.9]; p < 0.0001). ICH volumes declined from 29,585 to 28,156 (4.8% [5.1-4.6]; p < 0.0001) and IVT volume from 24,584 to 23,077 (6.1% [6.4-5.8]; p < 0.0001). Larger declines were observed at high-volume compared with low-volume centers (all p < 0.0001). There was no significant change in mechanical thrombectomy volumes (0.7% [0.6-0.9]; p = 0.49). Stroke was diagnosed in 1.3% [1.31-1.38] of 406,792 COVID-19 hospitalizations. SARS-CoV-2 infection was present in 2.9% ([2.82-2.97], 5,656/195,539) of all stroke hospitalizations.There was a global decline and shift to lower-volume centers of stroke admission volumes, ICH volumes, and IVT volumes during the 1st year of the COVID-19 pandemic compared with the prior year. Mechanical thrombectomy volumes were preserved. These results suggest preservation in the stroke care of higher severity of disease through the first pandemic year.This study is registered under NCT04934020.
  •  
20.
  • Potapov, Anton M., et al. (författare)
  • Global fine-resolution data on springtail abundance and community structure
  • 2024
  • Ingår i: Scientific Data. - : Nature Publishing Group. - 2052-4463. ; 11:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Springtails (Collembola) inhabit soils from the Arctic to the Antarctic and comprise an estimated ~32% of all terrestrial arthropods on Earth. Here, we present a global, spatially-explicit database on springtail communities that includes 249,912 occurrences from 44,999 samples and 2,990 sites. These data are mainly raw sample-level records at the species level collected predominantly from private archives of the authors that were quality-controlled and taxonomically-standardised. Despite covering all continents, most of the sample-level data come from the European continent (82.5% of all samples) and represent four habitats: woodlands (57.4%), grasslands (14.0%), agrosystems (13.7%) and scrublands (9.0%). We included sampling by soil layers, and across seasons and years, representing temporal and spatial within-site variation in springtail communities. We also provided data use and sharing guidelines and R code to facilitate the use of the database by other researchers. This data paper describes a static version of the database at the publication date, but the database will be further expanded to include underrepresented regions and linked with trait data.
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21.
  • Saraiva, Cláudia, et al. (författare)
  • MicroRNA-124-loaded nanoparticles increase survival and neuronal differentiation of neural stem cells in vitro but do not contribute to stroke outcome in vivo
  • 2018
  • Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 13:3
  • Tidskriftsartikel (refereegranskat)abstract
    • There is a high quest for novel therapeutic strategies to enhance recovery after stroke. MicroRNA-124 (miR-124) has been described as neuroprotective and anti-inflammatory molecule. Moreover, miR-124 is a well described enhancer of adult neurogenesis that could offer potentially beneficial effects. Herein, we used miR-124-loaded nanoparticles (miR-124 NPs) to evaluate their therapeutic potential in an in vitro and in vivo model of stroke. For that, neuroprotective and neurogenic responses were assessed in an in vitro model of stroke. Here, we found that miR-124 NPs decreased cell death and improved neuronal differentiation of subventricular zone (SVZ) neural stem cell cultures after oxygen and glucose deprivation. In contrast, intravenous injection of miR-124 NPs immediately after permanent focal ischemia induced by photothrombosis (PT) did not provide a better neurological outcome. In addition, treatment did not affect the number of 5-bromo-2’-deoxyuridine (BrdU)- and doublecortin/BrdU- positive cells in the SVZ at the study endpoint of 14 days after PT. Likewise, the ischemic insult did not affect the numbers of neuronal progenitors in the SVZ. However, in PT mice miR-124 NPs were able to specifically augment interleukin-6 levels at day 2 post-stroke. Furthermore, we also showed that NPs reached the brain parenchyma and were internalized by brain resident cells. Although, promising in vitro data could not be verified in vivo as miR-124 NPs treatment did not improve functional outcome nor presented beneficial actions on neurogenesis or post-stroke inflammation, we showed that our NP formulation can be a safe alternative for drug delivery into the brain.
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22.
  • Shungin, Dmitry, et al. (författare)
  • New genetic loci link adipose and insulin biology to body fat distribution.
  • 2015
  • Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 518:7538, s. 187-378
  • Tidskriftsartikel (refereegranskat)abstract
    • Body fat distribution is a heritable trait and a well-established predictor of adverse metabolic outcomes, independent of overall adiposity. To increase our understanding of the genetic basis of body fat distribution and its molecular links to cardiometabolic traits, here we conduct genome-wide association meta-analyses of traits related to waist and hip circumferences in up to 224,459 individuals. We identify 49 loci (33 new) associated with waist-to-hip ratio adjusted for body mass index (BMI), and an additional 19 loci newly associated with related waist and hip circumference measures (P < 5 × 10(-8)). In total, 20 of the 49 waist-to-hip ratio adjusted for BMI loci show significant sexual dimorphism, 19 of which display a stronger effect in women. The identified loci were enriched for genes expressed in adipose tissue and for putative regulatory elements in adipocytes. Pathway analyses implicated adipogenesis, angiogenesis, transcriptional regulation and insulin resistance as processes affecting fat distribution, providing insight into potential pathophysiological mechanisms.
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23.
  • Soares, Rodrigo P., et al. (författare)
  • Highlights of the São Paulo ISEV workshop on extracellular vesicles in cross-kingdom communication
  • 2017
  • Ingår i: Journal of Extracellular Vesicles. - : Wiley. - 2001-3078. ; 6:1
  • Tidskriftsartikel (refereegranskat)abstract
    • In the past years, extracellular vesicles (EVs) have become an important field of research since EVs have been found to play a central role in biological processes. In pathogens, EVs are involved in several events during the host–pathogen interaction, including invasion, immunomodulation, and pathology as well as parasite–parasite communication. In this report, we summarised the role of EVs in infections caused by viruses, bacteria, fungi, protozoa, and helminths based on the talks and discussions carried out during the International Society for Extracellular Vesicles (ISEV) workshop held in São Paulo (November, 2016), Brazil, entitled Cross-organism Communication by Extracellular Vesicles: Hosts, Microbes and Parasites.
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24.
  • Surendran, Praveen, et al. (författare)
  • Discovery of rare variants associated with blood pressure regulation through meta-analysis of 1.3 million individuals
  • 2020
  • Ingår i: Nature Genetics. - : Nature Publishing Group. - 1061-4036 .- 1546-1718. ; 52:12, s. 1314-1332
  • Tidskriftsartikel (refereegranskat)abstract
    • Genetic studies of blood pressure (BP) to date have mainly analyzed common variants (minor allele frequency > 0.05). In a meta-analysis of up to similar to 1.3 million participants, we discovered 106 new BP-associated genomic regions and 87 rare (minor allele frequency <= 0.01) variant BP associations (P < 5 x 10(-8)), of which 32 were in new BP-associated loci and 55 were independent BP-associated single-nucleotide variants within known BP-associated regions. Average effects of rare variants (44% coding) were similar to 8 times larger than common variant effects and indicate potential candidate causal genes at new and known loci (for example, GATA5 and PLCB3). BP-associated variants (including rare and common) were enriched in regions of active chromatin in fetal tissues, potentially linking fetal development with BP regulation in later life. Multivariable Mendelian randomization suggested possible inverse effects of elevated systolic and diastolic BP on large artery stroke. Our study demonstrates the utility of rare-variant analyses for identifying candidate genes and the results highlight potential therapeutic targets.
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25.
  • Trindade, Inês A., 1990-, et al. (författare)
  • Comprehensive assessment of Acceptance and Commitment Therapy processes (CompACT) : Measure refinement and study of measurement invariance across Portuguese and UK samples
  • 2021
  • Ingår i: Journal of Contextual Behavioral Science. - : Elsevier. - 2212-1447. ; 21, s. 30-36
  • Tidskriftsartikel (refereegranskat)abstract
    • The need for a transnational validation is imperative at the stage of development of the CompACT, a self-report measure of psychological flexibility. This study aimed to translate, validate and test the factor structure of the Portuguese version of the CompACT and to conduct a measurement invariance analysis comparing the scale's performance in Portuguese and UK samples.Results from an Exploratory Factor Analysis demonstrated that the Portuguese version of the CompACT statistically performed better without 5 items from the Openness to Experience subscale. The 18-item Portuguese-adapted CompACT presented significant correlations in the expected directions and with the expected magnitudes with AAQ-II, CFQ-7, MAAS, CAQ-8, and DASS-21. Partial metric invariance was demonstrated between the Portuguese-adapted 18-item CompACT and the original CompACT in a UK sample. The non-correspondence between responses to these versions may be due to differences between the Portuguese and British cultures.This study contributes with the adaptation of the original CompACT to the Portuguese language and with the refinement of this instrument to an 18-item measure of psychological flexibility, that appears to be adequate for use in Portuguese samples. The lack of complete metric invariance of the CompACT found across the Portuguese and UK samples highlights the importance of psychometrically analyzing psychological instruments before use in cultural contexts distinct from the one targeted in the measure's original validation study.
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26.
  • Wain, Louise V., et al. (författare)
  • Novel Blood Pressure Locus and Gene Discovery Using Genome-Wide Association Study and Expression Data Sets From Blood and the Kidney
  • 2017
  • Ingår i: Hypertension. - 0194-911X .- 1524-4563. ; 70:3, s. e4-e19
  • Tidskriftsartikel (refereegranskat)abstract
    • Elevated blood pressure is a major risk factor for cardiovascular disease and has a substantial genetic contribution. Genetic variation influencing blood pressure has the potential to identify new pharmacological targets for the treatment of hypertension. To discover additional novel blood pressure loci, we used 1000 Genomes Project-based imputation in 150 134 European ancestry individuals and sought significant evidence for independent replication in a further 228 245 individuals. We report 6 new signals of association in or near HSPB7, TNXB, LRP12, LOC283335, SEPT9, and AKT2, and provide new replication evidence for a further 2 signals in EBF2 and NFKBIA. Combining large whole-blood gene expression resources totaling 12 607 individuals, we investigated all novel and previously reported signals and identified 48 genes with evidence for involvement in blood pressure regulation that are significant in multiple resources. Three novel kidney-specific signals were also detected. These robustly implicated genes may provide new leads for therapeutic innovation.
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27.
  •  
28.
  • Abreu, Soraia Carvalho, et al. (författare)
  • Lung Inflammatory Environments Differentially Alter Mesenchymal Stromal Cell Behavior
  • 2019
  • Ingår i: American Journal of Physiology: Lung Cellular and Molecular Physiology. - : American Physiological Society. - 1522-1504 .- 1040-0605. ; 317:6, s. 823-831
  • Tidskriftsartikel (refereegranskat)abstract
    • Mesenchymal stromal (stem) cells (MSCs) are increasingly demonstrated to ameliorate experimentally-induced lung injuries through disease-specific anti-inflammatory actions, thus suggesting that different in vivo inflammatory environments can influence MSC actions. To determine the effects of different representative inflammatory lung conditions, human bone marrow-derived MSCs (hMSCs) were exposed to in vitro culture conditions from bronchoalveolar lavage fluid (BALF) samples obtained from patients with either the acute respiratory distress syndrome (ARDS) or with other lung diseases including acute respiratory exacerbations of cystic fibrosis (CF) (non-ARDS). hMSCs were subsequently assessed for time- and BALF concentration-dependent effects on mRNA expression of selected pro- and anti-inflammatory mediators, and for overall patterns of gene and mRNA expression. Both common and disease specific-patterns were observed in gene expression of different hMSC mediators, notably interleukin (IL)-6. Conditioned media obtained from non-ARDS BALF-exposed hMSCs was more effective in promoting an anti-inflammatory phenotype in monocytes than was conditioned media from ARDS BALF-exposed hMSCs. Neutralizing IL-6 in the conditioned media promoted generation of anti-inflammatory monocyte phenotype. These results demonstrated that different lung inflammatory environments differentially alter hMSC behavior. Further identification of these interactions and the driving mechanisms may influence clinical use of MSCs for treating lung diseases.
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29.
  • Arun, K. G., et al. (författare)
  • New horizons for fundamental physics with LISA
  • 2022
  • Ingår i: Living Reviews in Relativity. - : Springer Science and Business Media LLC. - 1433-8351 .- 2367-3613. ; 25:1
  • Forskningsöversikt (refereegranskat)abstract
    • The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders about the fundamental theory of nature at play in the extreme gravity regime, where the gravitational interaction is both strong and dynamical. In this white paper, the Fundamental Physics Working Group of the LISA Consortium summarizes the current topics in fundamental physics where LISA observations of gravitational waves can be expected to provide key input. We provide the briefest of reviews to then delineate avenues for future research directions and to discuss connections between this working group, other working groups and the consortium work package teams. These connections must be developed for LISA to live up to its science potential in these areas.
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30.
  • Coelho, Helena L., et al. (författare)
  • The mediating role of shame and fear of compassion on the relationship between major life events and depressive symptoms
  • 2021
  • Ingår i: Current Psychology. - : Springer. - 1046-1310 .- 1936-4733. ; 40:9, s. 4553-4562
  • Tidskriftsartikel (refereegranskat)abstract
    • An extensive body of research has showed the impact of major life events on depressive symptoms. However, the underlying psychological processes that contribute to this association are still unclear. The present study aims to explore the mediating role of external shame and fears of receiving compassion on the associations of the number of major life events and their appraisals by the individual with depressive symptoms. Participants were 400 Portuguese-speaking adults from the general population (121 men and 279 women) with ages between 18 and 65 years, that completed self-report measures. Correlation analysis showed significant and positive associations between the number of major life events that occurred in the previous year and the positive and negative appraisal of such events, external shame, fears of receiving compassion, and depressive symptoms. Path analysis revealed that external shame and fears of receiving compassion fully mediated the effects of number of life events on depressive symptoms. Furthermore, results showed a direct effect of negative appraisal of major life events on depressive symptoms. This study sheds light on the psychological processes that may underlie the relationship between the cumulative number of major life events and depressive symptoms. Specifically, it suggests that the occurrence of major life events can impact on depressive symptoms when associated with feelings of shame and fears of receiving compassion from others.
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31.
  • Coutinho, Mariana, et al. (författare)
  • Experiential avoidance, committed action and quality of life : Differences between college students with and without chronic illness
  • 2021
  • Ingår i: Journal of Health Psychology. - : Sage Publications. - 1359-1053 .- 1461-7277. ; 26:7, s. 1035-1045
  • Tidskriftsartikel (refereegranskat)abstract
    • This study aimed to explore, through structural equation modelling, experiential avoidance and committed action's effects on the association between anxiety and psychological quality of life and whether this relationship presents significant differences across a sample of 115 college students with chronic illness and a sample of 232 students without illness. Students with chronic illness presented higher levels of anxiety and experiential avoidance and lower levels of quality of life. The association between anxiety and psychological quality of life was partially explained by experiential avoidance and committed action. This path model was shown to be invariant between the two groups of students.
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32.
  • de Castro Moreno, Claudia Roberta, et al. (författare)
  • Problemas de sono em idosos estão associados a sexo feminino, dor e incontinência urinária
  • 2018
  • Ingår i: Revista Brasileira de Epidemiologia. - : FapUNIFESP (SciELO). - 1415-790X .- 1980-5497. ; 21
  • Tidskriftsartikel (refereegranskat)abstract
    • Objetivos:A prevalência de problemas de sono em idosos, como insônia, é uma questão relevante em nossa sociedade. A má qualidade do sono, por exemplo, é vista por muitos como um resultado inevitável do envelhecimento. Neste contexto, este estudo teve como objetivo estimar a prevalência e os fatores associados a distúrbios do sono em homens e mulheres idosos (60 anos ou mais).Métodos:O presente trabalho é parte do estudo de coorte Saúde, Bem-Estar e Envelhecimento (SABE), realizado em São Paulo, Brasil. A amostra deste estudo transversal constituiu-se de 1.334 idosos com 60 anos ou mais. Os distúrbios foram avaliados com base nas respostas dos participantes, levando em conta se eles tinham experimentado qualquer perturbação do sono no mês anterior.Resultados:Dentre os avaliados, 44,9% indicaram distúrbios do sono em geral, sendo esses mais frequentes em mulheres (51,5%) e na faixa etária de 75 a 79 anos (48,2%). De acordo com a análise de regressão, gênero, doenças articulares, noctúria e incontinência urinária foram associados aos distúrbios, sobre os quais também foi verificado que seu aumento não é linearmente dependente da idade.Conclusões:Sexo, dor, incontinência urinária e noctúria são fatores associados a distúrbios do sono em idosos. Assim, concluímos que a sua ausência está associada ao gênero e ao estado de saúde.
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33.
  • Dias, Bernardo Santos, et al. (författare)
  • Influence of fears of compassion on body image shame and disordered eating
  • 2020
  • Ingår i: Eating and Weight Disorders. - : Springer. - 1124-4909 .- 1590-1262. ; 25:1, s. 99-106
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose: The current study tested a path model examining the impact of fears of compassion in the adoption of disordered eating and whether social safeness and body shame would mediate this relationship.Methods: Participants were 645 women (aged between 18 and 55) from the general community, who completed an online survey.Results: Results indicated that fears of compassion were negatively associated with one's ability to feel secure and safe within close relationships, and positively linked with higher levels of body shame and disordered eating. The tested model accounted for 62% of the variance of disordered eating. Path analyses results revealed that the three dimensions of fears of compassion impacted on disordered eating. Particularly, fear of expressing compassion for others presented a direct impact on disordered eating. Moreover, fears of self-compassion and fears of receiving compassion from others partially impacted on disordered eating attitudes and behaviours, through the mechanisms of social safeness and body image-focused shame. These findings suggested that women who present higher levels of fear of self-compassion and of receiving signs of affection and compassion from others tend to feel more insecure in their social group, which seem explain body shame and the engagement in disordered eating behaviours.Conclusions: This study highlights the pathogenic impact of fears of compassion on body image and eating attitudes and behaviours. The current data seem to offer relevant insights for research and clinical practice, by supporting the relevance of developing compassionate abilities and attitudes to target body image and eating-related difficulties.
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34.
  • Do, Ron, et al. (författare)
  • Common variants associated with plasma triglycerides and risk for coronary artery disease
  • 2013
  • Ingår i: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 45:11, s. 1345-
  • Tidskriftsartikel (refereegranskat)abstract
    • Triglycerides are transported in plasma by specific triglyceride-rich lipoproteins; in epidemiological studies, increased triglyceride levels correlate with higher risk for coronary artery disease (CAD). However, it is unclear whether this association reflects causal processes. We used 185 common variants recently mapped for plasma lipids (P < 5 x 10(-8) for each) to examine the role of triglycerides in risk for CAD. First, we highlight loci associated with both low-density lipoprotein cholesterol (LDL-C) and triglyceride levels, and we show that the direction and magnitude of the associations with both traits are factors in determining CAD risk. Second, we consider loci with only a strong association with triglycerides and show that these loci are also associated with CAD. Finally, in a model accounting for effects on LDL-C and/or high-density lipoprotein cholesterol (HDL-C) levels, the strength of a polymorphism's effect on triglyceride levels is correlated with the magnitude of its effect on CAD risk. These results suggest that triglyceride-rich lipoproteins causally influence risk for CAD.
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35.
  • Donini, Lorenzo M, et al. (författare)
  • A consensus document on definition and diagnostic criteria for orthorexia nervosa
  • 2022
  • Ingår i: Eating and Weight Disorders. - Milan : Springer. - 1124-4909 .- 1590-1262. ; 27, s. 3695-3711
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose: Since the term orthorexia nervosa (ON) was coined from the Greek (ὀρθός, right and ὄρεξις, appetite) in 1997 to describe an obsession with “correct” eating, it has been used worldwide without a consistent definition. Although multiple authors have proposed diagnostic criteria, and many theoretical papers have been published, no consensus definition of ON exists, empirical primary evidence is limited, and ON is not a standardized diagnosis. These gaps prevent research to identify risk and protective factors, pathophysiology, functional consequences, and evidence-based therapeutic treatments. The aims of the current study are to categorize the common observations and presentations of ON pathology among experts in the eating disorder field, propose tentative diagnostic criteria, and consider which DSM chapter and category would be most appropriate for ON should it be included.Methods: 47 eating disorder researchers and multidisciplinary treatment specialists from 14 different countries across four continents completed a three-phase modified Delphi process, with 75% agreement determined as the threshold for a statement to be included in the final consensus document. In phase I, participants were asked via online survey to agree or disagree with 67 statements about ON in four categories: A–Definition, Clinical Aspects, Duration; B–Consequences; C–Onset; D–Exclusion Criteria, and comment on their rationale. Responses were used to modify the statements which were then provided to the same participants for phase II, a second round of feedback, again in online survey form. Responses to phase II were used to modify and improve the statements for phase III, in which statements that met the predetermined 75% of agreement threshold were provided for review and commentary by all participants.Results: 27 statements met or exceeded the consensus threshold and were compiled into proposed diagnostic criteria for ON.Conclusions: This is the first time a standardized definition of ON has been developed from a worldwide, multidisciplinary cohort of experts. It represents a summary of observations, clinical expertise, and research findings from a wide base of knowledge. It may be used as a base for diagnosis, treatment protocols, and further research to answer the open questions that remain, particularly the functional consequences of ON and how it might be prevented or identified and intervened upon in its early stages. Although the participants encompass many countries and disciplines, further research will be needed to determine if these diagnostic criteria are applicable to the experience of ON in geographic areas not represented in the current expert panel.Level of evidence: Level V: opinions of expert committees.© 2022, The Author(s).
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36.
  • Donini, Lorenzo M., et al. (författare)
  • Correction : A consensus document on definition and diagnostic criteria for orthorexia nervosa
  • 2023
  • Ingår i: Eating and Weight Disorders. - Milan : Springer. - 1124-4909 .- 1590-1262. ; 28
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • In this article Rebecca C. Reynolds was missing from the author list. The complete correct author group is given below. Lorenzo M. Donini, Juan Ramón Barrada, Friederike Barthels, Thomas M. Dunn, Camille Babeau, Anna Brytek-Matera, Hellas Cena, Silvia Cerolini, Hye-hyun Cho, Maria Coimbra, Massimo Cuzzolaro, Claudia Ferreira, Valeria Galfano, Maria G. Grammatikopoulou, Souheil Hallit, Linn Håman, Phillipa Hay, Masahito Jimbo, Clotilde Lasson, Eva-Carin Lindgren, Renee McGregor, Marianna Minnetti, Edoardo Mocini, Sahar Obeid, Crystal D. Oberle, Maria-Dolores Onieva-Zafra, Marie-Christine Opitz, María-Laura Parra-Fernández, Reinhard Pietrowsky, Natalija Plasonja, Eleonora Poggiogalle, Adrien Rigó, Rachel F. Rodgers, Maria Roncero, Carmina Saldaña, Cristina Segura-Garcia, Jessica Setnick, Ji-Yeon Shin, Grazia Spitoni, Jana Strahler, Nanette Stroebele-Benschop, Patrizia Todisco, Mariacarolina Vacca, Martina Valente, Màrta Varga, Andrea Zagaria, Hana Flynn Zickgraf, Rebecca C. Reynolds & Caterina Lombardo. The original article [1] has been corrected. © 2023, Springer Nature Switzerland AG.
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37.
  • Duarte, Cristiana, et al. (författare)
  • Body image and college women's quality of life : The importance of being self-compassionate
  • 2015
  • Ingår i: Journal of Health Psychology. - : Sage Publications. - 1359-1053 .- 1461-7277. ; 20:6, s. 754-764
  • Tidskriftsartikel (refereegranskat)abstract
    • This study explored self-compassion as a mediator between body dissatisfaction, social comparison based on body image and quality of life in 662 female college students. Path analysis revealed that while controlling for body mass index, self-compassion mediated the impact of body dissatisfaction and unfavourable social comparisons on psychological quality of life. The path model accounted for 33per cent of psychological quality of life variance. Findings highlight the importance of self-compassion as a mechanism that may operate on the association between negative body image evaluations and young women's quality of life.
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38.
  • Duarte, Cristiana, et al. (författare)
  • Normative body dissatisfaction and eating psychopathology in teenage girls : the impact of inflexible eating rules
  • 2016
  • Ingår i: Eating and Weight Disorders. - : Springer. - 1124-4909 .- 1590-1262. ; 21:1, s. 41-48
  • Tidskriftsartikel (refereegranskat)abstract
    • Adolescence has been considered a critical time for the development of body image-related difficulties and disordered eating behaviours, especially in females. Although adherence to eating rules has been linked to disordered eating, literature has not yet explored how the inflexible subscription to those rules impacts on eating psychopathology. Therefore, the aim of the current study was to explore whether inflexible eating impacts on the relationships between weight and body image-related variables, and disordered eating.Participated in this study are 497 female adolescents from the community, aged between 14 and 18 years old, who completed self-report measures.Results revealed that the majority of the participants were dissatisfied with their weight and body shape. Moreover, 6.64 % of the participants demonstrated severe eating psychopathology. A path analysis revealed that BMI, body dissatisfaction and social comparisons based on physical appearance impact on disordered eating behaviours, through the mechanism of inflexible adherence to eating rules. This model explained 52 % of eating psychopathology's variance.Findings highlight the relevance of body image-related difficulties in adolescence and additionally they emphasise the importance of promoting more flexible attitudes towards eating in prevention and intervention programmes with female adolescents.
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39.
  • Duarte, Cristiana, et al. (författare)
  • What makes dietary restraint problematic? Development and validation of the Inflexible Eating Questionnaire
  • 2017
  • Ingår i: Appetite. - : Elsevier. - 0195-6663 .- 1095-8304. ; 114, s. 146-154
  • Tidskriftsartikel (refereegranskat)abstract
    • This study presents the Inflexible Eating Questionnaire (IEQ), which measures the inflexible adherence to subjective eating rules.The scale's structure and psychometric properties were examined in distinct samples from the general population comprising both men and women.IEQ presented an 11-item one-dimensional structure, revealed high internal consistency, construct and temporal stability, and discriminated eating psychopathology cases from non-cases. The IEQ presented significant associations with dietary restraint, eating psychopathology, body image inflexibility, general psychopathology symptoms, and decreased intuitive eating. IEQ was a significant moderator on the association between dietary restraint and eating psychopathology symptoms.Findings suggested that the IEQ is a valid and useful instrument with potential implications for research on psychological inflexibility in disordered eating.
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40.
  • Ferreira, Cláudia, et al. (författare)
  • Body image-related cognitive fusion as a main mediational process between body-related experiences and women’s quality of life
  • 2015
  • Ingår i: Eating and Weight Disorders. - : Springer. - 1124-4909 .- 1590-1262. ; 20:1, s. 91-97
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose: Although the experience of body image has been considered an important indicator of women's psychological quality of life (QoL), it has also been suggested that the impact of unwanted body-related experiences on QoL may be mediated by emotional regulation processes. The aim of the current study was therefore to explore for the first time the role of body image-related cognitive fusion on these associations.Methods: This study comprised 779 young females who completed self-report measures. A path analysis was conducted to explore whether BMI, body dissatisfaction and feelings of inferiority based on physical appearance would impact on psychological QoL through body image-related cognitive fusion.Results: The model explained 39 % of psychological health, and revealed an excellent fit. Results showed that BMI did not directly impact on psychological health. Furthermore, the effects of increased body dissatisfaction and feelings of inferiority based on physical appearance on psychological health were fully and partially mediated by body image-related cognitive fusion, respectively.Conclusions: These findings suggest that the presence of body image-related negative experiences does not necessarily lead to impairment in women's QoL, which is rather dependent upon one's ability to observe these unwanted experiences as transient and subjective. Therefore, intervention programmes aiming at increasing women's QoL should focus on targeting emotional regulation processes in order to develop the ability to pursue life goals and values, even in the presence of unwanted experiences concerning body image.
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41.
  • Ferreira, Cláudia, et al. (författare)
  • Defensive Responses to Early Memories with Peers : A Possible Pathway to Disordered Eating
  • 2017
  • Ingår i: The Spanish Journal of Psychology. - : Cambridge University Press. - 1138-7416 .- 1988-2904. ; 19
  • Tidskriftsartikel (refereegranskat)abstract
    • Childhood and early adolescence experiences, specifically those that provide an adulthood enriched with warm and safe memories, are consistently stated in literature as powerful emotional regulators. In contrast, individuals who scarcely recall positive experiences may begin to believe that others see the self as inferior, inadequate and unattractive. In order to cope with a perceived loss of social desirability and achieve other's acceptance, individuals may become submissive, and women, particularly, may resort to the presentation of a perfect body image. Both mechanisms are defensive responses suggested to be associated with mental health difficulties, particularly disordered eating behaviors. The present study aimed at exploring the association between early memories of warmth and safeness with peers and eating psychopathology. Also, a path analysis was conducted to investigate the mediator role of submissiveness and perfectionistic self-presentation focused on body image on this association, in a sample of 342 female students. Results revealed that the absence of early positive memories with peers holds a significant effect over eating psychopathology's severity, and also that this effect is mediated through submissiveness and body image-related perfectionistic self-presentation. This model accounted for 13%, 19% and 51% of submissiveness, perfectionistic self-presentation of body image and eating psychopathology's variances, respectively, and showed excellent model fit.
  •  
42.
  • Ferreira, Cláudia, et al. (författare)
  • Do shame and perfectionistic self-presentation explain the link between early affiliative memories and eating psychopathology?
  • 2018
  • Ingår i: Psychology, Health & Medicine. - : Taylor & Francis. - 1354-8506 .- 1465-3966. ; 23:5, s. 628-634
  • Tidskriftsartikel (refereegranskat)abstract
    • This study tested a model examining the impact that early affiliative memories (both with family and peers) on eating psychopathology, and whether these links are carried by the mechanisms of external shame and body image-related perfectionistic self-presentation, in a sample of 480 female college students. Path analyses' results revealed that this model accounted for 48% of disordered eating's variance and suggests that the lack of early positive emotional memories is associated with higher levels of shame (feelings of inferiority and unattractiveness), and with higher tendency to adopt body image-related perfectionistic strategies, that seem to explain excessive eating concern and rigid control of one's eating behaviors. This study offers important insights for future research and for the development of intervention programs, by revealing the importance of assessing and targeting shame and perfectionistic strategies and suggesting the importance of promoting adaptive emotion regulation strategies.
  •  
43.
  • Ferreira, Cláudia, et al. (författare)
  • Explaining rigid dieting in normal-weight women : the key role of body image inflexibility
  • 2016
  • Ingår i: Eating and Weight Disorders. - : Springer. - 1124-4909 .- 1590-1262. ; 21:1, s. 49-56
  • Tidskriftsartikel (refereegranskat)abstract
    • Restrictive dieting is an increasing behavior presented by women in modern societies, independently of their weight. There are several known factors that motivate diet, namely a sense of dissatisfaction with one's body and unfavorable social comparisons based on physical appearance. However, dieting seems to have a paradoxical effect and has been considered a risk factor for weight gain and obesity in women and for maladaptive eating. Nevertheless, the study of the emotional regulation processes that explain the adoption of inflexible and rigid eating behaviors still remains little explored. In this line, the present study aims to explore why normal-weight women engage in highly rigid and inflexible diets. We hypothesize that body and weight dissatisfaction and unfavorable social comparisons based on physical appearance explain the adoption of inflexible eating rules, through the mechanisms of body image inflexibility. The current study comprised 508 normal-weight female college students. Path analyses were conducted to explore the study's hypotheses. Results revealed that the model explained 43 % of inflexible eating and revealed excellent fit indices. Furthermore, the unwillingness to experience unwanted events related to body image (body image inflexibility) mediated the impact of body dissatisfaction and unfavorable social comparisons on the adoption of inflexible eating rules. This study highlights the relevance of body image inflexibility to explain rigid eating attitudes, and it seems to be an important avenue for the development of interventions focusing on the promotion of adaptive attitudes towards body image and eating in young women.
  •  
44.
  • Ferreira, Cláudia, et al. (författare)
  • Exploring drive for thinness as a perfectionistic strategy to escape from shame experiences
  • 2015
  • Ingår i: The Spanish Journal of Psychology. - : Cambridge University Press. - 1138-7416 .- 1988-2904. ; 18
  • Tidskriftsartikel (refereegranskat)abstract
    • Perfectionistic self-presentation defines the attempt at presenting the self as perfect through the public concealment of personal defects and/or through the display of attributes perceived as capable to gather positive attention of others. Although perfectionism has long been considered a central aspect of eating psychopathology mediational studies between this construct and these conditions are scarce. This study aimed at examining the mediational role of body image-related perfectionistic self-presentation in the effects of external shame and internal shame on drive for thinness, in a sample of young women. Results revealed body image-related perfectionistic self-presentation as a significant mediator (p <.05) of the relationships between external and internal shame, and drive for thinness. Furthermore, 86% and 69% of the effects of external shame and internal shame, respectively, were explained by their indirect effects through body image-related perfectionistic self-presentation on drive for thinness (95% CI). These results highlight that the control over eating may emerge as a maladaptive strategy to deal with shame when mediated by an endorsement in the belief that presenting a perfect body image is crucial to be accepted and valued by others. Study findings suggest that this perfectionistic strategy should be targeted while treating eating psychopathology.
  •  
45.
  • Ferreira, Cláudia, et al. (författare)
  • Getting entangled with body image : Development and validation of a new measure
  • 2015
  • Ingår i: Psychology and Psychotherapy. - : John Wiley & Sons. - 1476-0835 .- 2044-8341. ; 88:3, s. 304-316
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: Several studies have highlighted the role of cognitive fusion on human suffering and a wide range of psychopathological conditions. Namely, this process has been regarded as a core aspect in eating disorders. Nevertheless, the study of cognitive fusion on eating psychopathology is scarce and a measure that specifically concerns body image was still to be created. The present study aimed therefore at developing and validating such measure, the Cognitive Fusion Questionnaire - Body Image (CFQ-BI).Design and methods: The current study was conducted using different samples of both genders, collected in the general and student populations. The dimensionality of the CFQ-BI was tested through an exploratory factor analysis and a confirmatory factor analysis (CFA). The scale's internal reliability and other psychometric qualities were also analysed.Results: The CFQ-BI's final structure was one-dimensional and comprised 10 items that assess body image-related cognitive fusion. This final structure explained a total of 73.41% of the variance. The adequacy of the questionnaire was corroborated through a CFA which revealed that CFQ-BI presents good global and local adjustment values and goodness-of-fit indices. Results also showed that the CFQ-BI holds a very good internal consistency (=.96), convergent, divergent and temporal reliabilities, and is able to discriminate cases from non-cases of eating psychopathology.Conclusions: The CFQ-BI was thus established as a short, robust, and reliable measure of body image-related cognitive fusion. This new measure may correspond to a significant contribution to research and clinical practice in the field of body image and eating-related difficulties.
  •  
46.
  • Ferreira, Cláudia, et al. (författare)
  • How do warmth, safeness and connectedness-related memories and experiences explain disordered eating?
  • 2018
  • Ingår i: Eating and Weight Disorders. - : Springer. - 1124-4909 .- 1590-1262. ; 23:5, s. 629-636
  • Tidskriftsartikel (refereegranskat)abstract
    • Literature suggested that the recall of early positive experiences have a major impact on the promotion of feelings of connectedness and social safeness, and seems to protect individuals against psychopathology. Recent research has also demonstrated that the absence of these positive rearing memories play a key role on disordered eating-related behaviours. The impact of early affiliative memories on disordered eating do not seem to be direct, and the mechanisms underlying this relationship are scarcely investigated. The present study aimed to clarify how memories of warmth and safeness explain the adoption of disordered eating attitudes, and tested the mediator role of social safeness, external shame and appearance-focused social comparison on aforementioned relationship, in a sample of 277 young women. The tested model explained 36% of eating psychopathology's variance and presented an excellent fit. Path analysis results indicated that the impact of rearing memories on eating psychopathology was fully mediated through the mechanisms of social safeness, external shame and appearance-focused social comparison. Specifically, these findings suggested that the extent to which positive rearing memories are associated with lower levels of disordered eating attitudes is influenced by the current feelings of social safeness and connectedness, which in turn are totally carried by decreased feelings of external shame and by lower endorsement on unfavourable comparison based on physical appearance with proximal targets (peers). These results seem to offer important insights for research and clinical work on body image and eating-related difficulties, suggesting the relevance of promoting warm and safe interactions with others.Level of evidenceLevel V, descriptive study.
  •  
47.
  • Ferreira, Cláudia, et al. (författare)
  • Turning eating psychopathology risk factors into action : The pervasive effect of body image-related cognitive fusion
  • 2014
  • Ingår i: Appetite. - : Elsevier. - 0195-6663 .- 1095-8304. ; 80, s. 137-142
  • Tidskriftsartikel (refereegranskat)abstract
    • Body image dissatisfaction and unfavourable social comparisons are significant risk factors to eating psychopathology. Nevertheless, the impact of these negative experiences depends on the cognitive and emotional processes involved. Previous research has shown that cognitive fusion is a nuclear process linked to psychological inflexibility, but its role on body image and eating difficulties remains unclear. This study aims to explore a model of the mediational role of body image-related cognitive fusion (CF-BI) on the relationship between body dissatisfaction, unfavourable social comparisons, and eating psychopathology in a sample of 345 female students. Results from path analyses show that the impact of unfavourable social comparisons on eating psychopathology is fully mediated by CF-BI. Moreover, CF-BI also revealed a mediational effect on the relationship between body image dissatisfaction and the severity of eating symptoms, in spite of the fact that a direct effect of body dissatisfaction still exists. The tested model highlights the crucial role that cognitive fusion, in the specific domain of body image, plays in the relationship between risk factors and the severity of disordered eating attitudes and behaviours. Furthermore, these findings present empirical support for the relevance of addressing acceptance and cognitive defusion techniques to prevent and treat eating disorders. 
  •  
48.
  • Ferreira, Cláudia, et al. (författare)
  • Understanding the Role of Self-Judgment in the Association between Body Dissatisfaction and Quality of Life on Normal-Weight and Overweight Portuguese Women
  • 2016
  • Ingår i: The Spanish Journal of Psychology. - : Cambridge University Press. - 1138-7416 .- 1988-2904. ; 19
  • Tidskriftsartikel (refereegranskat)abstract
    • Literature has demonstrated the negative impact of body image dissatisfaction on women's quality of life. Nonetheless, it has been suggested that the relationship between body dissatisfaction and women's well-being is not linear, and that the processes that mediate this association remain unclear. This study aims to clarify the mediator role of self-judgment in the association between negative body image and psychological quality of life, in two groups: normal-weight and overweight women. This cross-sectional study comprised 200 normal-weight and 92 overweight female college students, aged between 18 and 24 years old, that completed self-report instruments of body dissatisfaction, self-judgment, and quality of life. Results showed that women who presented harsher self-judgment about their perceived failures tended to present lower levels in all quality of life domains. Also, results from mediation analyses indicated the relationship between body dissatisfaction and psychological quality of life was significantly mediated by the mechanisms of self-judgment in the two BMI groups (95% CI [-2.41 to -0.04]; 95% CI [-6.35 to -.89]). This mediational model accounted for 28.3% and 40.7% of psychological quality of life in the normal-weight and overweight groups, respectively. These results suggest that a lower ability to deal with one's failures or inadequacies (e.g., negative evaluation of body image) in a kind and accepting manner may significantly increase the negative impact of body dissatisfaction on one's psychological quality of life. In this way, it seems that, the focus of interventions should go beyond body dissatisfaction and also target the development of adaptive attitudes (opposed to self-critical attitudes) to deal with negative body-related experiences.
  •  
49.
  • Ferreira, Cláudia, et al. (författare)
  • When thought suppression backfires : its moderator effect on eating psychopathology
  • 2015
  • Ingår i: Eating and Weight Disorders. - : Springer. - 1124-4909 .- 1590-1262. ; 20:3, s. 355-362
  • Tidskriftsartikel (refereegranskat)abstract
    • Recently, several studies have pointed the importance of thought suppression as a form of experiential avoidance in different psychopathological conditions. Thought suppression may be conceptualized as an attempt to decrease or eliminate unwanted internal experiences. However, it encloses a paradoxical nature, making those thoughts hyper accessible and placing an extra burden on individuals. This avoidance process has been associated with several psychopathological conditions. However, its role in eating psychopathology remains unclear. The present study aims to explore the moderation effect of thought suppression on the associations between body image-related unwanted internal experiences (unfavorable social comparison through physical appearance and body image dissatisfaction) and eating psychopathology severity in a sample of 211 female students. Correlational analyses showed that thought suppression is associated with psychological inflexibility and eating disorders' main risk factors and symptoms. Moreover, two independent analyses revealed that thought suppression moderates, as it amplifies, the impact of unfavorable social comparisons through physical appearance (model 1) and body image dissatisfaction (model 2) on disordered eating attitudes and behaviors. Hence, for the same level of these body-related internal experiences, young females who reveal higher levels of thought suppression present higher eating psychopathology. Taken together, these findings highlight the key role of thought suppression in eating psychopathology and present important clinical implications.
  •  
50.
  • Fonseca, Soraia, et al. (författare)
  • The buffer role of psychological flexibility against the impact of major life events on depression symptoms
  • 2020
  • Ingår i: Clinical Psychologist. - : Taylor & Francis. - 1328-4207 .- 1742-9552. ; 24:1, s. 82-90
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose: Major life events have been positively associated with depression symptoms. Although psychological flexibility has been associated with adaptive coping skills and negatively linked with depression symptoms, it remains unclear whether psychological flexibility may be a protective process against the pervasive impact of major life events. Thus, the present study aimed to explore the moderating effect of psychological flexibility on the association between the cumulative number of major life events and their negative appraisal with depression symptoms.Methods: Four hundred and one participants (280 females and 121 males), aged between 18 and 65 years old, completed a set of self-report measures assessing the number of major life events that had occurred in the previous 12 months and their appraisal, as well as psychological flexibility, and depression symptoms.Results: Correlation analyses showed a negative and strong association between psychological flexibility and depression symptoms. Path analyses revealed that psychological flexibility attenuated the effect of the cumulative number of major life events and their perceived negative impact on depression symptoms.Conclusions: This study highlights the buffer role of psychological flexibility on the association of number of major life events and their negative appraisal, with depression symptoms. These findings suggest that being able to be in contact with the present moment with an accepting and non-judging attitude towards internal experiences, and to engage in valued-based action, may protect individuals against the negative impact of major life events with regards to depression symptoms.
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