title: Objectively-determined intensity- and domain-specific physical activity and sedentary behavior in relation to percent body fat.
abstract: OBJECTIVE
  This study examined the independent and joint associations of overall, intensity-specific and domain-specific physical activity and sedentary behavior with bioelectrical impedance-determined percent body fat.
  
  
  METHODS
  Physical activity was measured in 442 Flemish adults (41.4 ± 9.8 years) using the SenseWear Armband and an electronic diary. Two-way analyses of covariance investigated the interaction of physical activity and sedentary behavior with percent body fat. Multiple linear regression analyses, adjusted for potential confounders, examined the associations of intensity-specific and domain-specific physical activity and sedentary behavior with percent body fat.
  
  
  RESULTS
  Results showed a significant main effect for physical activity in both genders and for sedentary behavior in women, but no interaction effects. Light activity was positively (β = 0.41 for men and 0.43 for women) and moderate (β = -0.64 and -0.41), vigorous (β = -0.21 and -0.24) and moderate-to-vigorous physical activity (MVPA) inversely associated with percent body fat, independent of sedentary time. Regarding domain-specific physical activity, significant associations were present for occupation, leisure time and household chores, irrespective of sedentary time. The positive associations between body fat and total and domain-specific sedentary behavior diminished after MVPA was controlled for.
  
  
  CONCLUSIONS
  MVPA during leisure time, occupation and household chores may be essential to prevent fat gain.
authors.affiliation: Department of Kinesiology, KU Leuven, Tervuursevest 101, 3001 Leuven, Belgium; Research Foundation - Flanders, Belgium. Electronic address: tineke.scheers@faber.kuleuven.be.
authors.forename: Tineke
authors.initials: T
authors.lastname: Scheers
authors.forename: Renaat
authors.initials: R
authors.lastname: Philippaerts
authors.forename: Johan
authors.initials: J
authors.lastname: Lefevre
mesh_terms: D000203:Activities of Daily Living; D000273:Adipose Tissue / Q000502:physiology; D050154:Adiposity; D000328:Adult; D001823:Body Composition; D003430:Cross-Sectional Studies; D017097:Electric Impedance; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D057185:Sedentary Behavior
keywords: %BF; Activities of daily living; BIA; Bioelectrical impedance analysis; Body composition; Epidemiology; MVPA; Objective monitoring; PA; bioelectrical impedance analysis; moderate-to-vigorous physical activity; percent body fat; physical activity