title: Association between self-reported physical activity and obesity among White, Black, Hispanic, and Asian Americans: 2007 and 2009 brfss.
abstract: OBJECTIVE
  To examine the association between self-reported leisure-time moderate- to vigorous-intensity physical activity (MVPA) and obesity among non-Hispanic White, non-Hispanic Black, Hispanic, and Asian Americans.
  
  
  METHODS
  We analyzed data from 569,816 Whites, 54,521 Blacks, 44,864 Hispanics, and 11,232 Asians aged 18 to 79 years who participated in the 2007 and 2009 Behavioral Risk Factor Surveillance System. Physical activity, height, weight, and demographic data were self-reported through telephone interviews. MVPA level was categorized into inactive, low, medium, and high, and weight status into normal-weight, overweight, and obese based on body mass index. Race/ethnicity-, sex-, and age group-specific polytomous logistic regression analysis was conducted, adjusted for age, education, and income.
  
  
  RESULTS
  There was an inverse association between self-reported MVPA and obesity among White men and women (Ps for trend <.0001). Black and Hispanic women also presented an inverse association (Ps for trend <.0001), although the association was weaker compared to White women. In Asians, no association between self-reported MVPA and obesity was observed.
  
  
  CONCLUSIONS
  Weak or no association observed between self-reported MVPA and obesity in minority groups may: 1) suggest that other factors than MVPA play more critical roles in determining weight status in minority groups, or 2) reflect large measurement errors of self-report data in minority groups.
authors.affiliation: Department of Pediatrics, Northwestern University, 225 E Chicago Ave, Box #157, Chicago, IL 60611, USA. skwon@luriechildrens.org
authors.forename: Soyang
authors.initials: S
authors.lastname: Kwon
authors.forename: Meme
authors.initials: M
authors.lastname: Wang
authors.forename: Marquis
authors.initials: M
authors.lastname: Hawkins
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American / Q000706:statistics & numerical data; D000368:Aged; D001213:Asian / Q000706:statistics & numerical data; D015992:Body Mass Index; D005260:Female; D006630:Hispanic or Latino / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D009765:Obesity / Q000208:ethnology*; D016017:Odds Ratio; D057566:Self Report; D012923:Social Class; D014481:United States / Q000453:epidemiology; D044465:White People / Q000706:statistics & numerical data; D055815:Young Adult