Physical activity and sedentary behaviors and health-related quality of life in adolescents

• Published in: Pediatrics (Evanston) 2012-07, Vol.130 (1), p.e167-e174
• Main Authors: Gopinath, Bamini, Hardy, Louise L, Baur, Louise A, Burlutsky, George, Mitchell, Paul
• Format: Article
• Language: English
• Subjects: Adolescent; Adolescent Behavior; Analysis; Analysis of Variance; Child; Child health behavior; Child health behaviour; Correlation analysis; Cross-Sectional Studies; Dancing; Exercise; Female; Health aspects; Health behavior; Health behavior in children; Health Surveys; Humans; Linear Models; Longitudinal Studies; Male; Multivariate Analysis; Pediatrics; Polls & surveys; Quality of Life; Sedentary Lifestyle; Self Report; Sports; Teenagers; Television; Television and children; Video Games
• ISSN: 0031-4005; 1098-4275
• DOI: 10.1542/peds.2011-3637

Our goal was to assess cross-sectional and longitudinal associations between physical activity and sedentary behaviors (television viewing, computer and video-game usage, and reading) with health-related QoL. Of 2353 children surveyed (median age: 12.7 years), 1216 were resurveyed 5 years later, and 475 were newly recruited into the study (N = 1691). Children completed detailed activity questionnaires. Health-related QoL was assessed by using the Pediatric Quality of Life Inventory (PedsQL). Cross-sectionally, after multivariable adjustment, adolescents in the highest versus lowest tertile of time spent in outdoor physical activity and television viewing had a higher (P(trend) = .001) and lower (P(trend) = .0003) total PedsQL score, respectively. Adolescents who remained in the highest tertiles compared with those in the lowest tertiles of total physical activity over the 5 years had significantly higher scores in the following areas: total (P(trend) = .04), physical summary (P(trend) = .0001), and social (P(trend) = .02) domains. Conversely, those in the highest versus lowest tertile of screen-viewing time during follow-up reported significantly lower values in the following areas: total score (6.34-unit difference), physical summary (4.86-unit difference), psychosocial summary (7.09-unit difference), and emotional (8.33-unit difference) and school (9.78-unit difference) domains. Regular physical activity over the long-term was associated with higher perceived health-related QoL among adolescents. Conversely, lower PedsQL scores were observed among those who spent the most time in screen-viewing activities. Improved understanding of these relationships could help in developing interventions to promote general well-being among adolescents.