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- Holmberg, Christopher, 1984, et al.
(författare)
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Adolescents' communication of high calorie low nutrient food items in image-based social media
- 2016
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Ingår i: European Obesity Summit 2016 Abstract Book, a supplement of Obesity Facts. - 1662-4025 .- 1662-4033. - 9783318058956 ; 9:9(suppl 1) VIII + 368
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Rationale: Adolescents today use social media applications extensively and research demonstrates that peers in social media settings can influence adolescents regarding their food intake. These newly emerged channels also offer unique possibilities to observe adolescents’ dietary communication. Objective: This study aimed to explore how adolescents communicate food images in a widely used social media image-sharing application, Instagram. Methods: To find adolescent Instagram users we searched for images appended with the hashtag #14år (Swedish for “14 years”). The hashtag had been applied to 3479 images as of March 2014. However, as users change their privacy settings, delete their accounts, or change their user names, 1358 images were not retrievable. Users sometimes also applied the hashtag to several images, and we excluded accounts that we judged did not belong to adolescents (based on written and visual profile information); 1001 unique Instagram users’ photo streams were thus eligible for analysis. Content analysis was used to identify food items and categorize these based on types of food and how the food items were presented. Results: Most of the adolescent users (85 %) shared images containing food items. A majority of the images (67.7%) depicted foods high in calories but low in nutrients. Almost half of these images were arranged as a still life with food brand names clearly exposed. Many of these images were influenced by major food marketing campaigns. Fruits and vegetables only occurred in 21.8% of all images. This food group was frequently portrayed zoomed in with focus solely on the food, with a hashtag or caption expressing palatability. These images were often presented in the style of a cook book. Conclusions: Food was presented in varied ways. Adolescents themselves produced images copying food advertisements. This has clear health promotion implications since it becomes more challenging to monitor and tackle exposure to marketing of unhealthy foods to young people in these popular online networks because images are part of a lifestyle that the young people want to promote. Shared images contain personal recommendations, which mean that they may have a more powerful effect than commercial food advertising. Acknowledgements: This study was supported by grants from Formas - The Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (grant number 259-2012-38). We would also like to affirm our respect for Instagram users and their publically shared images which made it possible for us to conduct this research.
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- Alligier, M, et al.
(författare)
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OBEDIS Core Variables Project: European Expert Guidelines on a Minimal Core Set of Variables to Include in Randomized, Controlled Clinical Trials of Obesity Interventions
- 2020
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Ingår i: Obesity facts. - : S. Karger AG. - 1662-4033 .- 1662-4025. ; 13:1, s. 1-28
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Tidskriftsartikel (refereegranskat)abstract
- Heterogeneity of interindividual and intraindividual responses to interventions is often observed in randomized, controlled trials for obesity. To address the global epidemic of obesity and move toward more personalized treatment regimens, the global research community must come together to identify factors that may drive these heterogeneous responses to interventions. This project, called OBEDIS (OBEsity Diverse Interventions Sharing – focusing on dietary and other interventions), provides a set of European guidelines for a minimal set of variables to include in future clinical trials on obesity, regardless of the specific endpoints. Broad adoption of these guidelines will enable researchers to harmonize and merge data from multiple intervention studies, allowing stratification of patients according to precise phenotyping criteria which are measured using standardized methods. In this way, studies across Europe may be pooled for better prediction of individuals’ responses to an intervention for obesity – ultimately leading to better patient care and improved obesity outcomes.
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- Arner, P, et al.
(författare)
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Fatty Acids, Obesity and Insulin Resistance
- 2015
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Ingår i: Obesity facts. - : S. Karger AG. - 1662-4033 .- 1662-4025. ; 8:2, s. 147-155
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Tidskriftsartikel (refereegranskat)abstract
- <b><i>Objective: </i></b>Although elevated free fatty acid (FFA) levels in obesity have been considered to be of importance for insulin resistance, a recent meta-analysis suggested normal FFA levels in obese subjects. We investigated fasting circulating FFA and glycerol levels in a large cohort of non-obese and obese subjects. <b><i>Methods: </i></b>Subjects recruited for a study on obesity genetics were investigated in the morning after an overnight fast (n = 3,888). Serum FFA (n = 3,306), plasma glycerol (n = 3,776), and insulin sensitivity index (HOMA-IR,n = 3,469) were determined. Obesity was defined as BMI ≥ 30 kg/m<sup>2</sup> and insulin resistance as HOMA-IR ≥ 2.21. <b><i>Results:</i></b> In obese subjects, circulating FFA and glycerol levels were higher than in non-obese individuals (by 26% and 47%, respectively; both p < 0.0001). Similar results were obtained if only men, women or medication-free subjects were investigated. Insulin resistance and type 2 diabetes were associated with a further minor increase in FFA/glycerol among obese subjects. When comparing insulin-sensitive non-obese with insulin-sensitive or -resistant obese individuals, FFA and glycerol were 21-29% and 43-49% higher in obese individuals, respectively. <b><i>Conclusion: </i></b>Circulating FFA and glycerol levels are markedly elevated in obesity but only marginally influenced by insulin resistance and type 2 diabetes. Whether these differences persist during diurnal variations in circulating FFA/glycerol, remains to be established.
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- Baker, Jennifer L., et al.
(författare)
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Evaluation of the Overweight/Obese Child - Practical Tips for the Primary Health Care Provider: Recommendations from the Childhood Obesity Task Force of the European Association for the Study of Obesity
- 2010
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Ingår i: Obesity Facts. - : S. Karger AG. - 1662-4033 .- 1662-4025. ; 3:2, s. 131-137
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Forskningsöversikt (refereegranskat)abstract
- The prevalence of obesity among children and adolescents is on the rise. The majority of overweight or obese children are treated by primary health care providers including paediatricians, family practitioners, dieticians, nurses, and school health services - and not by specialists. The majority of obese children have no underlying medical disorder causing their obesity yet a significant proportion might suffer from obesity-related co-morbidities. This text is aimed at providing simple and practical tools for the identification and management of children with or at risk of overweight and obesity in the primary care setting. The tips and tools provided are based on data from the recent body of work that has been published in this field, official statements of several scientific societies along with expert opinion provided by the members of the Childhood Obesity Task Force (COTF) of the European Association for the Study of Obesity (EASO). We have attempted to use an evidence-based approach while allowing flexibility for the practicing clinician in domains where evidence is currently lacking and ensuring that treating the obese child involves the entire family as well.
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- Bakkman, Linda, et al.
(författare)
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Reduced respiratory capacity in muscle mitochondria of obese subjects.
- 2010
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Ingår i: Obesity Facts. - : S. Karger AG. - 1662-4025 .- 1662-4033. ; 3:6, s. 371-5
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND/AIMS: The extent of weight gain varies among individuals despite equal calorie overconsumption. Furthermore, weight gain is often less than expected from energy excess. This suggests differences in metabolic efficiency and basal metabolism. Since mitochondrial uncoupling accounts for a substantial portion of the basal metabolic rate, we compared skeletal muscle mitochondrial respiration in obese subjects to normal-weight reference groups with various degrees of physical activity.METHODS: Muscle biopsies were taken from the vastus lateralis muscle of 9 healthy obese subjects (BMI 40 ± 3). Mitochondria were isolated and analyzed for coupled (state 3) and uncoupled (state 4) respirations as well as mitochondrial efficiency (P/O ratio) using pyruvate as a substrate. Respiratory data were compared to reference groups A, normal-weight untrained (BMI 24 ± 0.7), and B, normal-weight trained (BMI 24 ± 0.6).RESULTS: Obese subjects had a decreased respiratory capacity per mitochondrial volume compared to the reference groups: this was evident in state 4 (65% and 35% of reference group A and B, respectively) and state 3 (53% and 29% of A and B, respectively) (p < 0.05).CONCLUSION: Obese subjects had a low capacity for fuel oxidation, which may play a role in the predisposition of obesity. However, whether lower mitochondrial capacity is a cause or a consequence of obesity requires further research.
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