title: Leisure-time physical activity and regular walking or cycling to work are associated with adiposity and 5 y weight gain in middle-aged men: the PRIME Study.
abstract: OBJECTIVE
  To examine the influence of physical activity on body mass index (BMI), waist circumference (W) and body mass changes (DeltaBMI) in middle-aged men, with special regard to moderate-intensity activities.
  
  
  METHODS
  Longitudinal study of adults who participated in the PRIME Study.
  
  
  METHODS
  A cohort of 8865 men aged 50-59 y, free of coronary heart disease.
  
  
  METHODS
  BMI and W at baseline, body mass changes over a 5 y period. Detailed baseline assessment of net energy expenditure due to physical activity (PAE) in the preceding year, according to category of activity, by means of the MOSPA Questionnaire. PAE was expressed in weekly metabolic equivalent scores (MET h/week).
  
  
  RESULTS
  After adjustment for confounders, the multiple regression analyses indicated that BMI, W and DeltaBMI were inversely associated with PAE spent in getting to work (P<10(-5), <10(-5) and 0.04, respectively) and practice of high-intensity (>or=6 MET) recreational activities (<0.01, <10(-5) and <0.01). Men who regularly spent more than 10 MET h/week in walking or cycling to work had a mean BMI, W and DeltaBMI respectively 0.3 kg/m(2), 1 cm and 0.06 kg/m(2) lower than those who did not expend energy in getting to work. In the subgroup of subjects who did not perform high-intensity activities, the level of recreational PAE was inversely associated with BMI and W but not with subsequent weight-gain.
  
  
  CONCLUSIONS
  These findings indicate that, in middle-aged men, physical activities of moderate-intensity, which are probably easier to promote than more vigorous activities and, in particular, a more current daily activity, walking or cycling to work, may have a favourable effect on body fat markers and body mass gain.
authors.affiliation: Laboratoire d'Epidémiologie et de Santé Publique, Faculté de Médecine, Strasbourg, France.
authors.forename: A
authors.initials: A
authors.lastname: Wagner
authors.forename: C
authors.initials: C
authors.lastname: Simon
authors.forename: P
authors.initials: P
authors.lastname: Ducimetière
authors.forename: M
authors.initials: M
authors.lastname: Montaye
authors.forename: V
authors.initials: V
authors.lastname: Bongard
authors.forename: J
authors.initials: J
authors.lastname: Yarnell
authors.forename: A
authors.initials: A
authors.lastname: Bingham
authors.forename: G
authors.initials: G
authors.lastname: Hedelin
authors.forename: P
authors.initials: P
authors.lastname: Amouyel
authors.forename: J
authors.initials: J
authors.lastname: Ferrières
authors.forename: A
authors.initials: A
authors.lastname: Evans
authors.forename: D
authors.initials: D
authors.lastname: Arveiler
mesh_terms: D000203:Activities of Daily Living; D000273:Adipose Tissue; D001642:Bicycling; D001824:Body Constitution; D015992:Body Mass Index; D015331:Cohort Studies; D006801:Humans; D007899:Leisure Activities; D008019:Life Style; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D012044:Regression Analysis; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D016138:Walking; D015430:Weight Gain / Q000502:physiology*