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- Barbieri, Dechristian, et al.
(författare)
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Effects of time in sitting and standing on pleasantness, acceptability, fatigue and pain when using a sit-stand table: an experiment on overweight and normal-weight subjects
- 2020
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Ingår i: Journal of Physical Activity and Health. - : Human Kinetics Journals. - 1543-3080 .- 1543-5474. ; 17:12, s. 1222-1230
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Tidskriftsartikel (refereegranskat)abstract
- Background: Sit-stand desks have been suggested as an initiative to increase posture variation among office workers. However, there is limited evidence of what would be preferable combinations of time sitting and standing. The aim of this study was to determine and compare perceived pleasantness, acceptability, pain and fatigue for five time patterns of sitting and standing at a sit-stand desk.Methods: Thirty post-graduate students were equally divided into a normal-weight (mean BMI 22.8 kg/m2) and an overweight/obese (mean BMI 28.1 kg/m2) group. They performed 3 hours of computer work at a sit-stand desk on five different days, each day with a different time pattern (A: 60-min sit/0-min stand; B: 50/10; C: 40/20; D: 30/30; E: 20/40). Pleasantness, acceptability, pain and fatigue ratings were obtained at the beginning and at the end of the 3-hour period.Results: High ratings of pleasantness were observed for time patterns B, C and D in both groups. All participants rated acceptability to be good for time patterns A to D. A minor increase in perceived fatigue and pain was observed in time pattern E.Conclusion: For new sit-stand desk users, regardless of BMI, 10-30 min of standing per hour appears to be an amenable time pattern.
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| 2. |
- Boisgontier, MP, et al.
(författare)
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Adverse Childhood Experiences, Depressive Symptoms, Functional Dependence, and Physical Activity: A Moderated Mediation Model
- 2020
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Ingår i: Journal of physical activity & health. - : Human Kinetics. - 1543-5474 .- 1543-3080. ; 17:8, s. 790-799
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Tidskriftsartikel (refereegranskat)abstract
- Background: Adverse childhood experiences, depressive symptoms, and functional dependence are interrelated. However, the mechanisms underlying these associations remain unclear. The authors investigated the potential of depressive symptoms to mediate the effect of adverse childhood experiences on functional dependence in older age and whether physical activity moderated this mediation. Method: Data from 25,775 adults aged 62 (9) years from the Survey of Health Ageing and Retirement in Europe were used in adjusted linear mixed-effects models to test whether depressive symptoms mediated the associations between adverse childhood experiences and functional dependence in activities of daily living (ADL) and instrumental ADL (IADL) and whether physical activity moderated these mediations. Results: The results showed a graded association between the number of adverse childhood experiences (0 vs 1 and 0 vs ≥2) and the number of functional limitations in both ADL (bs = 0.040 and 0.067) and IADL (bs = 0.046 and 0.076). These associations were mediated by depressive symptoms. Physical activity reduced the effect of adverse childhood experiences on depressive symptoms (bs = −0.179 and −0.515) and tempered the effect of depressive symptoms on functional dependence both in ADL (b = −0.073) and IADL (b = −0.100). As a result of these reductions, the effect of adverse childhood experiences and depressive symptoms on functional dependence in ADL (Ps > .081) and IADL (Ps > .528) was nonsignificant in physically active participants. Conclusions: These findings suggest that, after age 50, engaging in physical activity more than once a week protects functional independence from the detrimental effects of adverse childhood experiences and depression. In inactive individuals, the detrimental effects of adverse childhood experiences on functional dependence are mediated by depressive symptoms.
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