School's out... now what? Objective estimates of afterschool sedentary time and physical activity from childhood to adolescence.

Autor/inn/en	Wickel, Eric E.; Belton, Sarahjane
Titel	School's out... now what? Objective estimates of afterschool sedentary time and physical activity from childhood to adolescence. Gefälligkeitsübersetzung: Schule aus... was nun? Objektive Einschätzungen zur außerschulischen sitzenden Zeit und körperliche Aktivität von Kindheit bis zur Adoleszenz.
Quelle	In: Journal of science and medicine in sport, 19 (2016) 8, S. 654-658 PDF als Volltext Link als defekt meldenVerfügbarkeit
Sprache	englisch
Dokumenttyp	online; gedruckt; Zeitschriftenaufsatz
ISSN	1440-2440; 1878-1861
DOI	10.1016/j.jsams.2015.09.001
Schlagwörter	Empirische Untersuchung; Kind; Schule; Aktivität; Sitzen; Bewegungsverhalten; Freizeit; Sitzhaltung; Jugendlicher
Abstract	Objectives: To describe the change in afterschool levels of sedentary time and physical activity from childhood to adolescence. Design: Longitudinal. Methods: 375 youth (50% boys) from the Study of Early Child Care and Youth Development (United States) provided accelerometer data at 9 (2000/01) and 15 yrs (2006/07). Average time spent in sedentary, light, moderate, vigorous, and moderate-to-vigorous physical activity (MVPA; min h-1) was reported across the afterschool period (15:00-22:00) and separately across whole days. Mean comparisons were conducted to report between- and within-group differences in afterschool data. Analysis of covariance was used to determine the effect of sex, ethnicity, and baseline body mass index (BMI) on the 6-yr change in afterschool sedentary time and MVPA before and after adjusting for covariates (baseline afterschool sedentary/MVPA time, change in non-afterschool sedentary/MVPA time, difference in afterschool wear time, and socioeconomic status). Results: From 9 to 15 yrs, sedentary time increased and activity decreased during the afterschool period. After covariate adjustment, the decline in afterschool MVPA was significantly greater among girls, compared to boys (B coefficient (95%CI)=-0.94 (-1.47, -0.40)), and among overweight/obese youth, compared to youth with normal BMI values (B coefficient (95%CI)=-0.65 (-1.22, -0.08)). Conclusions: During the transition from childhood to adolescence, afterschool activity (min h-1) decreases while sedentary time increases. Programs are needed throughout this period that promote the maintenance of activity or encourage additional activity with age. (Autor).
Erfasst von	Bundesinstitut für Sportwissenschaft, Bonn
Update	2017/2