title: Association of self-reported physical activity patterns and socio-demographic factors among normal-weight and overweight Japanese men.
abstract: BACKGROUND
  It is still not known whether overweight men have different patterns and socio-demographic correlates of self-reported physical activity (PA) compared with normal-weight men. Thus, this study examined the perceived PA patterns and associated socio-demographic factors among normal-weight and overweight Japanese men.
  
  
  METHODS
  Data were analyzed for 1,420 men (aged 44.4 ± 8.3 years) who responded to an Internet-based cross-sectional survey relating to socio-demographic variables, BMI status, and a short version of the International Physical Activity Questionnaire. Mann-Whitney, chi-square, and binary logistic regression analyses were employed.
  
  
  RESULTS
  Normal-weight men were significantly more likely to attain 150 minutes per week of moderate-to-vigorous PA than overweight men (26.6% vs. 21.3%; p=0.035), whereas there were no significant proportional differences in total PA and walking between the two BMI subgroups. With PA, a significant interaction was observed between BMI status and household income (p=0.004 for total PA; p=0.02 for walking). In the subgroup analyses, having a lower household income (odds ratio, 0.63; 95% confidence interval, 0.41-0.96) was negatively associated with attaining 150 minutes of walking per week among normal-weight men. No significant associations between household income and attaining 150 minutes per week of total PA and walking were found among overweight men.
  
  
  CONCLUSIONS
  The results revealed that patterns and socio-demographic correlates of self-reported PA in overweight men are different from those in normal-weight men. This finding suggests the necessity of developing specific strategies for PA intervention among overweight men. Socio-demographic correlates of PA may be more important for normal-weight than overweight men.
authors.affiliation: Graduate School of Sport Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama, 359-1192, Japan. anthroliao@fuji.waseda.jp
authors.forename: Yung
authors.initials: Y
authors.lastname: Liao
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Harada
authors.forename: Ai
authors.initials: A
authors.lastname: Shibata
authors.forename: Kaori
authors.initials: K
authors.lastname: Ishii
authors.forename: Koichiro
authors.initials: K
authors.lastname: Oka
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Nakamura
authors.forename: Shigeru
authors.initials: S
authors.lastname: Inoue
authors.forename: Teruichi
authors.initials: T
authors.lastname: Shimomitsu
mesh_terms: D000328:Adult; D001294:Attitude to Health; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D015444:Exercise / Q000502:physiology / Q000523:psychology*; D006801:Humans; D020407:Internet; D007564:Japan / Q000453:epidemiology; D007899:Leisure Activities / Q000523:psychology; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D050177:Overweight / Q000453:epidemiology; D005082:Physical Exertion / Q000502:physiology; D015203:Reproducibility of Results; D012111:Residence Characteristics / Q000706:statistics & numerical data; D057566:Self Report; D012923:Social Class; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D013997:Time Factors; D016138:Walking / Q000502:physiology / Q000523:psychology*