title: Number and appraisal of daily hassles and life events in young adulthood: the association with physical activity and screen time: a longitudinal cohort study.
abstract: BACKGROUND
  Young adults face radical life changes regarding residence, marriage, family and work that may negatively impact their health behaviours. Therefore, we investigated the associations of the number of daily hassles and life events and their subjective appraisal with physical activity and screen time in young adulthood.
  
  
  METHODS
  Data came from participants of the Amsterdam Growth and Health Longitudinal Study (AGAHLS). Self-reported physical activity (min/wk) was used from wave 6 (1991; mean age 27), wave 7 (1993; mean age 29), wave 8 (1996/1997; mean age 32) and 9 (2000; mean age 36). Self-reported screen time (h/wk) was assessed in waves 8 and 9. The number and the appraisal of daily hassles and major life events were assessed with the Everyday Problem Checklist and Life Events List, respectively (including five life event domains, i.e.: health, work, home/family, personal/social relations, and finances). The final sample included 474 participants for the physical activity analyses and 475 participants for the screen time analyses. To test the longitudinal associations of daily hassles and life events with physical activity and screen time, univariable and multivariable Generalised Estimating Equations were performed. Effect modification by gender was tested.
  
  
  RESULTS
  Physical activity levels were higher in those who had experienced more daily hassles. People who reported higher subjective appraisal in the work and finances life event domains also had higher levels of physical activity, although only the subjective appraisal in the finances domain remained significant in the multivariable model. No significant associations between number and subjective appraisal of daily hassles and life events and screen time were observed.
  
  
  CONCLUSIONS
  The occurrence of specific life events may be more influential for people's physical activity behaviour than their respective sum or emotional tone. Still, the assessment of daily hassles may be a relevant addition in this research field. Finally, we suggest that daily hassles and life events are less important for explaining screen time behaviour than for physical activity.
authors.forename: Léonie
authors.initials: L
authors.lastname: Uijtdewilligen
authors.affiliation: Department of Public & Occupational Health and EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands. a.singh@vumc.nl.
authors.forename: Amika S
authors.initials: AS
authors.lastname: Singh
authors.forename: Mai J
authors.initials: MJ
authors.lastname: Chinapaw
authors.forename: Lando L J
authors.initials: LL
authors.lastname: Koppes
authors.forename: Willem
authors.initials: W
authors.lastname: van Mechelen
authors.forename: Jos W R
authors.initials: JW
authors.lastname: Twisk
mesh_terms: D000328:Adult; D057189:Checklist; D015331:Cohort Studies; D003201:Computers / Q000706:statistics & numerical data; D004651:Employment; D005195:Family Relations; D005260:Female; D006304:Health Status; D006801:Humans; D007182:Income; D007398:Interpersonal Relations; D008016:Life Change Events; D008137:Longitudinal Studies; D008297:Male; D009043:Motor Activity; D057185:Sedentary Behavior; D057566:Self Report; D013690:Television / Q000706:statistics & numerical data; D014937:Work