Body Mass Index and Physical Inactivity: 2013 BRFSS. Issue 10 (October 2016)

• Record Type: Journal Article
• Authors: Churilla, James R.; Johnson, Tammie M.; Richardson, Michael R.; Williams, Bethany D.
• Is Part Of: Southern medical journal. Volume 109:Issue 10(2016)
• Publication Date: 2016-10
• Subjects: body mass index -- logistic regression -- physical inactivity -- surveillance -- underweight; Medicine -- Periodicals; 610.5
• DOI: 10.14423/SMJ.0000000000000537
• Languages: English
• ISSNs: 0038-4348

Abstract

Abstract : Objectives: Examine the odds of adults reporting physical inactivity (PI) across six body mass index (BMI) categories. Methods: We used data from the 2013 Behavioral Risk Factor Surveillance System. Six BMI categories were used. Results: The odds of reporting PI in underweight men and men in the class I, II, and III obesity categories were 1.65 (95% confidence interval [CI] 1.35–2.02), 1.30 (95% CI 1.21–1.39), 1.73 (95% CI 1.58–1.90), and 2.44 (95% CI 2.17–2.75), respectively, compared with men of desirable weight (odds ratio [OR] 1.00, 18.5–24.9 kg/m 2 ; referent, OR 1.00). The odds of reporting PI in underweight men were similar to class II and class III obese men. The odds of reporting PI in underweight women, overweight women, and women in the class I, II, and III obesity categories were 1.57 (95% CI 1.36–1.81), 1.20 (95% CI 1.14–1.27), 1.65 (95% CI 1.56–1.75), 2.23 (95% CI 2.07–2.40), and 2.89 (95% CI 2.66–3.15), respectively, compared with women of desirable weight (≥18.5–24.9 kg/m 2 ; referent, OR 1.00). The odds of reporting PI were similar in underweight and class I obese women. Women were found to have greater odds than men of reporting PI in four of the five nondesirable BMI categories ( P < 0.05). Conclusions: The within- and between-sex differences in the odds of reporting PI vary significantly by BMI category. Future research needs to include the underweight BMI category when investigating PI and sedentary time because of the potential clinical relevance. Abstract : Physical inactivity and sedentary behavior have become pervasive in US society, and the health consequences of being sedentary are becoming ubiquitous. The physical inactivity patterns of individuals in the extreme body mass index classifications are similar. This article provides a descriptive analysis of physical inactivity patterns across body mass index classifications in a nationally representative sample of US adults.