| 1. |
- Backlander, Gisela, et al.
(författare)
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Development and Validation of a Multi-Dimensional Measure of Activity-Based Working Behaviors
- 2021
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Ingår i: Frontiers in Psychology. - : Frontiers Media SA. - 1664-1078. ; 12
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Tidskriftsartikel (refereegranskat)abstract
- Most work on activity-based working centers on the physical environment and digital technologies enabling flexible working. While important, we believe the key components for implementing activity-based working are employee and manager behaviors. To measure the degree of enactment of activity-based work, based on workshops with experienced practitioners as well as previous literature, we have developed and validated a behavior-focused measure of activity-based working behaviors. In our initial sample (Sample 1, N = 234), three subscales were identified: task - environment crafting, workday planning, and social needs prioritization. In the replication sample (Sample 2, N = 434), this model also showed adequate fit. Moreover, task - environment crafting was related to general health and lower stress in sample 1 (multi-organization sample), but not in the single-organization sample (sample 2). Workday planning was associated with higher concentration in both samples and in the second sample with general health and work engagement; the latter was also related to social needs prioritization.
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| 2. |
- Hemmingsson, Erik, et al.
(författare)
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Impact of social support intensity on walking in the severely obese : a randomized clinical trial
- 2008
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Ingår i: Obesity. - : Wiley. - 1930-7381 .- 1930-739X. ; 16:6, s. 1308-1313
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: There are few established methods for promoting physical activity (PA) in the severely obese. Because social support is a potential method for promoting PA, we compared mean steps/day during 18 weeks in severely obese outpatients receiving either standard support (SS) or added support (AS). METHODS AND PROCEDURES: Eighty severely obese outpatients from an obesity clinic were invited; 66 provided written consent, 55 were randomized, and 42 were included in final analyses (9 men, 33 women; age 44.4 +/- 13.1 years; BMI 41.9 +/- 5.5 kg/m(2)). All participants received a pedometer and a walking promotion booklet. In addition to SS, the AS group received ten 2-h group counseling sessions aimed at increasing weekly accumulated steps, every second week during the study. Each participant was asked to complete a 7-day walking diary every second week (10 observations). RESULTS: Baseline steps/day was 6,912 for the AS group and 5,311 for the SS group (P = 0.023). Data at 18 weeks showed that the AS group recorded 10,136 steps/day and the SS group 6,118 steps/day (P = 0.024). There was no allocation x time interaction (P = 0.46). During the follow-up period as a whole, the AS group recorded 1,794 more steps/day than the SS group (P = 0.0074). DISCUSSION: The AS group recorded more steps/day than the SS group, reaching a mean level of approximately 10,000 steps/day. However, the nonsignificant interaction between allocation x time suggests that this difference was present already at baseline and did not increase during follow-up.
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| 3. |
- Hemmingsson, Erik, et al.
(författare)
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Is the association between physical activity and body mass index obesity dependent?
- 2007
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Ingår i: International Journal of Obesity. - : Springer Science and Business Media LLC. - 0307-0565 .- 1476-5497. ; 31:4, s. 663-668
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Most studies indicate an inverse relationship between physical activity (PA) and body mass index (BMI). However, the impact of obesity on this relationship is unclear. OBJECTIVE: To scrutinize the BMI/PA relationship by analysing multiple categories of PA from a sample with a wide BMI range. DESIGN: PA was measured with accelerometry for 7 consecutive days during free-living conditions in 85 severely obese outpatients (mean BMI 42.7 kg/m(2) (s.d. 6.1); age 43.0 year (12.6)) and 193 control subjects (24.0 kg/m(2) (3.5); 41.6 year (13.0)). Six categories of PA were calculated from the accelerometer data (min/day of sedentary time, min/day of light PA, min/day of moderate PA, min/day of vigorous PA, activity counts/day and steps/day). Participants were stratified in obese and non-obese subgroups (BMI=30 kg/m(2) as cutoff). Associations between BMI and PA were examined in the total sample, and in subgroups. The impact of sex and age on the BMI/PA association was tested. RESULTS: In the total sample, the association between BMI and PA was significant in all PA categories except for time spent sedentary (P=0.68). However, in subgroup analyses, the association between BMI and PA in non-obese was only significant for activity counts/day (r=-0.16, P<0.05) and vigorous intensity PA (r=-0.15, P=0.05). After adjustment for age, vigorous PA remained significantly associated with BMI in the non-obese (r=-0.17, P<0.05). In obese individuals, significant associations between BMI and PA were found for all six PA categories (age adjusted), sedentary time (r=0.26, P=0.05), light PA (r=-0.30, P<0.01), moderate PA (r=-0.35, P<0.01), vigorous PA (r=-0.39, P<0.001), activity counts/day (r=-0.50, P<0.001) and steps/day (r=-0.54, P<0.001). CONCLUSION: The association between PA and BMI was weak in non-obese individuals. In contrast, BMI was highly significantly associated with PA in obese individuals. Longitudinal studies are needed to tease out the direction of association between PA and BMI across BMI categories, as the cross-sectional associations seem to be dependent on obesity status.
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| 4. |
- Mascher, Henrik, et al.
(författare)
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Changes in signalling pathways regulating protein synthesis in human muscle in the recovery period after endurance exercise
- 2007
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Ingår i: Acta Physiologica. - : Blackwel. - 1748-1708 .- 1748-1716. ; 191:1, s. 67-75
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Tidskriftsartikel (refereegranskat)abstract
- AIM: Exercise induced alterations in the rate of muscle protein synthesis may be related to activity changes in signalling pathways involved in protein synthesis. The aim of the present study was to investigate whether such changes in enzyme phosphorylation occur after endurance exercise. METHODS: Six male subjects performed ergometer cycling exercise for 1 h at 75% of the maximal oxygen uptake. Muscle biopsy samples from the vastus lateralis were taken before, immediately after, 30 min, 1 h, 2 h and 3 h after exercise for the determination of protein kinase B (PKB/Akt), mammalian target of rapamycin (mTOR), glycogen synthase 3 kinase (GSK-3), p70S6 kinase (p70(S6k)) and eukaryotic elongation factor 2 (eEF2) phosphorylation. RESULTS: The phosphorylation of Akt was unchanged directly after exercise, but two- to fourfold increased 1 and 2 h after the exercise, whereas GSK-3alpha and beta phosphorylation were two- to fourfold elevated throughout most of the 3-h recovery period. Phosphorylation of mTOR was elevated threefold directly after, 30 min and 2 h after exercise and eEF2 phosphorylation was decreased by 35-75% from 30 min to 3 h-recovery. Exercise led to a five- to eightfold increase in Ser(424)/Thr(421) phosphorylation of p70(S6k) up to 30 min after exercise, but no change in Thr(389) phosphorylation. CONCLUSIONS: The marked decrease in eEF2 phosphorylation suggests an activation of translation elongation and possibly protein synthesis in the recovery period after sustained endurance exercise. The lack of p70(S6k) activation suggests that translation initiation is activated via alternative pathways, possibly via the activation of eukaryotic initiating factor 2B.
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| 5. |
- Nyberg, Gisela, et al.
(författare)
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Physical activity in children measured by accelerometry : stability over time
- 2009
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Ingår i: Scandinavian Journal of Medicine and Science in Sports. - Oxford : Blackwell. - 0905-7188 .- 1600-0838. ; 19, s. 30-35
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to examine the stability of objectively measured physical activity in Swedish children and to study variables that predicted physical activity and body mass index standard deviation score (BMI SDS) at follow-up. A total of 97 children provided valid repeated measurements of physical activity between 2002 and 2005. The children were on average 7.5 years at baseline (SD+/-0.92) and 9 years at follow-up (SD+/-0.92). The mean follow-up time was approximately 1.5 years (mean 558 days, SD+/-224). An accelerometer (Actiwatch, Cambridge Neurotechnology Ltd., Cambridge, UK) was used to measure physical activity during 7 consecutive days. Yearly weight and height were examined and BMI SDS was calculated. Baseline physical activity was significantly correlated with physical activity at follow-up (r=0.59) with a stronger correlation for boys (r=0.72) than for girls (r=0.51). High physical activity levels were more stable (r=0.74) than low physical activity levels (r=0.55). Physical activity at follow-up was explained by physical activity at baseline and season (R(2)=0.46) whereas BMI SDS at follow-up was explained by BMI SDS at baseline and age (R(2)=0.90). The results of this study suggest that physical activity levels are fairly stable in 6-10-year-old children.
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| 6. |
- Bentzen, Marte, et al.
(författare)
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Impact of Job Insecurity on Psychological Well- and Ill-Being among High Performance Coaches.
- 2020
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Ingår i: International Journal of Environmental Research and Public Health. - : MDPI. - 1661-7827 .- 1660-4601. ; 17:19
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: The evaluative nature of high performance (HP) sport fosters performance expectations that can be associated with harsh scrutiny, criticism, and job insecurity. In this context, (HP) sport is described as a highly competitive, complex, and turbulent work environment. The aim of this longitudinal, quantitative study was to explore whether HP coaches' perceptions of job insecurity and job value incongruence in relation to work would predict their psychological well- and ill-being over time.METHODS: HP coaches (n = 299) responded to an electronic questionnaire at the start, middle, and end of a competitive season, designed to measure the following: job insecurity, values, psychological well-being (vitality and satisfaction with work), and psychological ill-being (exhaustion and cynicism). Structural equation model analyses were conducted using Mplus.RESULTS: Experiencing higher levels of job insecurity during the middle of the season significantly predicted an increase in coaches' psychological ill-being, and a decrease in their psychological well-being at the end of the season. However, value incongruence did not have a significant longitudinal impact.CONCLUSIONS: These findings cumulatively indicate that coaches' perceptions of job insecurity matter to their psychological health at work. Consequently, it is recommended that coaches and organizations acknowledge and discuss how to handle job security within the HP sport context.
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| 7. |
- Berggren, Rasmus, et al.
(författare)
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Education Does Not Affect Cognitive Decline in Aging : A Bayesian Assessment of the Association Between Education and Change in Cognitive Performance.
- 2018
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Ingår i: Frontiers in psychology. - : Frontiers Media SA. - 1664-1078. ; 9, s. 1138-
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Tidskriftsartikel (refereegranskat)abstract
- Education is positively associated with level of cognitive function but the association between education and rate of cognitive decline remains unresolved, partly for methodological reasons. In this article, we address this issue using linear mixed models and Bayesian hypothesis testing, using data from the Betula cohort-sequential longitudinal study. Our results support the null hypothesis that education does not alter the rate of cognitive decline for visuospatial ability, semantic knowledge, and episodic memory. We propose that education is only a relevant variable for understanding cognitive performance in older age because of the association between performance and education that is formed in early development.
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| 8. |
- Blom, Victoria, 1975-
(författare)
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Contingent self-esteem, stressors and burnout in working women and men
- 2012
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Ingår i: Work. - 1051-9815 .- 1875-9270. ; 43:2, s. 123-131
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Tidskriftsartikel (refereegranskat)abstract
- Objective: A high work involvement is considered central in the burnout process. Yet, research investigating how high work involvement and psychosocial stressors relate to burnout is scarce. High involvement in terms of performance-based self-esteem (PBSE) refers to individuals’ strivings to validate self-worth by achievements, a disposition linked to poor health. The aim of the present study was to examine longitudinally PBSE in relation to burnout while also taking into account work- and private life stressors. Participants: The sample consisted of 2121 working women and men. Methods: Main- and mediation effects were investigated using hierarchical regression analysis. Results: The results showed performance-based self-esteem mediated partially between the stressors and burnout. Performance-based self-esteem was the strongest predictor of burnout over time, followed by private life stressors. Women experienced more work stress than did men. Men had stronger associations between work stressors and burnout, while women had stronger associations between performance-based self-esteem and burnout. Conclusions: Individual characteristics along with both private life and work stressors are important predictors of burnout. Factors associated with burnout differ somewhat between women and men.
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| 9. |
- Blom, Victoria, 1975-, et al.
(författare)
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Genetic susceptibility to burnout in a Swedish twin cohort
- 2012
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Ingår i: European Journal of Epidemiology. - : Springer. - 0393-2990 .- 1573-7284. ; 27:3, s. 225-231
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Tidskriftsartikel (refereegranskat)abstract
- Most previous studies of burnout have focused on work environmental stressors, while familial factors so far mainly have been overlooked. The aim of the study was to estimate the relative importance of genetic influences on burnout (measured with Pines Burnout Measure) in a sample of monozygotic (MZ) and dizygotic (DZ) Swedish twins. The study sample consisted of 20,286 individuals, born 1959–1986 from the Swedish twin registry who participated in the cross-sectional study of twin adults: genes and environment. Probandwise concordance rates (the risk for one twin to be affected given that his/her twin partner is affected by burnout) and within pair correlations were calculated for MZ and DZ same—and opposite sexed twin pairs. Heritability coefficients i.e. the proportion of the total variance attributable to genetic factors were calculated using standard biometrical model fitting procedures. The results showed that genetic factors explained 33% of the individual differences in burnout symptoms in women and men. Environmental factors explained a substantial part of the variation as well and are thus important to address in rehabilitation and prevention efforts to combat burnout.
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| 10. |
- Blom, Victoria, et al.
(författare)
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The associations between job insecurity, depressive symptoms and burnout : The role of performance-based self-esteem
- 2018
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Ingår i: Economic and Industrial Democracy. - 0143-831X .- 1461-7099. ; 39:1, s. 48-63
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Tidskriftsartikel (refereegranskat)abstract
- Despite agreement on the negative effects of job insecurity, more knowledge needs to be generated on the health effects in terms of burnout and depressive symptoms and for whom job insecurity has these negative effects. The present study aims to investigate the associations between job insecurity and burnout and depressive symptoms respectively, by studying the moderation influences of performance-based self-esteem (PBSE), a form of contingent self-esteem. A population-based sample with 4145 twins was used. The results showed that job insecurity was significantly associated with both burnout and depressive symptoms, and that PBSE acted as a moderator, so that the associations were stronger for individuals with high PBSE than for individuals with low PBSE. The study contributes by including a personality characteristic to gain more knowledge about the mechanisms of job insecurity on mental ill-health, and by illustrating that job insecurity has an impact on severe health outcomes in terms of burnout and depressive symptoms.
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