title: BMI and physical activity among at-risk sixth- and ninth-grade students, Hillsborough County, Florida, 2005-2006.
abstract: BACKGROUND
  During the past 3 decades, the number of overweight adolescents increased while adolescent engagement in physical activity decreased. We investigated the prevalence of overweight and physical activity levels among economically disadvantaged and minority middle- and high-school students in a school district in Florida. In particular, data on physical activity levels of middle-school students are limited and needed for prevention and intervention planning. In addition, because of state education policies, students in Florida are less likely than students nationally to enroll in physical education, placing them at a higher risk for decreased physical activity levels.
  
  
  METHODS
  We used multivariate methodology to analyze physical activity levels among 526 students from 3 middle and 2 high schools in southwest Florida.
  
  
  RESULTS
  Forty percent of students met criteria for overweight or obesity. Overall, less than 45% of students reported engaging in daily physical activity. Boys reported higher levels of physical activity than did girls, and a decline in physical activity levels was observed between grades 6 and 9, especially among minority girls (ie, African American and Latino). Lack of time was identified as the greatest barrier to engaging in physical activity.
  
  
  CONCLUSIONS
  This study documents health disparities among minority students from economically disadvantaged backgrounds in an urban school district. Participation in daily physical activity was below recommended guidelines across grades. We found numerous barriers to engaging in physical activity, which will enable local education agencies to evaluate their current physical activity policies and identify alternative physical activities for these youth.
authors.affiliation: University of South Florida, 13101 N Bruce B. Downs Blvd, Tampa, FL, USA. hcurtiss@coedu.usf.edu
authors.forename: Heather
authors.initials: H
authors.lastname: Agazzi
authors.forename: Kathleen
authors.initials: K
authors.lastname: Armstrong
authors.forename: Kathy L
authors.initials: KL
authors.lastname: Bradley-Klug
mesh_terms: D000293:Adolescent; D015992:Body Mass Index; D005260:Female; D005431:Florida / Q000453:epidemiology; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D050177:Overweight / Q000453:epidemiology* / Q000503:physiopathology; D015995:Prevalence; D012307:Risk Factors; D012574:Schools; D017678:Sex Distribution; D013334:Students
references.citation: Arch Pediatr Adolesc Med. 2001 Aug;155(8):897-902
references.pmid: 11483116
references.citation: MMWR Surveill Summ. 2008 Jun 6;57(4):1-131
references.pmid: 18528314
references.citation: Med Sci Sports Exerc. 1997 Jan;29(1):138-43
references.pmid: 9000167
references.citation: Med Sci Sports Exerc. 2000 Sep;32(9):1598-600
references.pmid: 10994911
references.citation: J Sch Health. 1997 Aug;67(6):202-19
references.pmid: 9285866
references.citation: Adv Data. 2000 Jun 8;(314):1-27
references.pmid: 11183293
references.citation: J Clin Endocrinol Metab. 2003 Apr;88(4):1417-27
references.pmid: 12679416
references.citation: JAMA. 2001 Dec 12;286(22):2845-8
references.pmid: 11735760
references.citation: Pediatrics. 2007 Dec;120 Suppl 4:S229-53
references.pmid: 18055653
references.citation: N Engl J Med. 2002 Sep 5;347(10):706-7
references.pmid: 12213940
references.citation: J Sch Health. 2006 Jan;76(1):12-7
references.pmid: 16457680
references.citation: J Adolesc Health. 2002 Oct;31(4):336-42
references.pmid: 12359379