The cumulative impact of physical activity, sleep duration, and television time on adolescent obesity: 2011 Youth Risk Behavior Survey.
BACKGROUND
Physical activity (PA), television time (TV), and sleep duration (SLP) are considered individual risk factors for adolescent obesity. Our aim was to investigate the concurrent influence of meeting PA, SLP, and TV recommendations on adolescent obesity utilizing 2011 Youth Risk Behavior Surveillance Survey (YRBSS) data.


METHODS
Subjects included 9589 (4874 females) high school students. PA, SLP, and TV were categorized utilizing established national recommendations and youth were cross-tabulated into 1 of 8 groups based on meeting or not meeting each recommendation. Logistic models were used to examine the odds of obesity for each group.


RESULTS
Youth meeting the PA recommendation were not at increased odds of obesity, regardless of SLP or TV status. However, not meeting any single recommendation, in general, led to increased odds of not meeting the other two. In boys, 11.8% met all recommendations while 14.1% met 0 recommendations. In girls, only 5.0% met all recommendations while 17.8% met none.


CONCLUSIONS
Boys and girls not meeting any of the recommendations were 4.0 and 3.8 times more likely to be obese compared with their respective referent groups. Further research considering the simultaneous influence these risk factors may have on obesity and on one another is warranted.
School of Kinesiology and Recreation, Illinois State University, Normal, IL.
Kelly R
KR
Laurson
Joey A
JA
Lee
Joey C
JC
Eisenmann
D000293:Adolescent; D015992:Body Mass Index; D003146:Communications Media; D005260:Female; D015438:Health Behavior; D006801:Humans; D016015:Logistic Models; D008297:Male; D009043:Motor Activity; D009765:Obesity / Q000453:epidemiology*; D012307:Risk Factors; D012309:Risk-Taking; D057185:Sedentary Behavior; D012890:Sleep; D011795:Surveys and Questionnaires; D013690:Television; D014481:United States / Q000453:epidemiology