Seasonal variation in the distribution of daily stepping in 11-13 year old school children.

Autor:	McCrorie PR; MRC/CSO Social and Public Health Sciences Unit, University of Glasgow., Duncan E; School of health and life Sciences, Glasgow Caledonian University., Granat MH; School of Health Sciences, University of Salford., Stansfield BW; School of Health and life Sciences, Glasgow Caledonian University.
Jazyk:	angličtina
Zdroj:	International journal of exercise science [Int J Exerc Sci] 2015; Vol. 8 (4).
Abstrakt:	Purpose: Seasonality studies in adolescent's physical activity (PA) tend to report total PA (e.g. steps/day) rather than more specific detail such as steps/hour. This study compared the detailed changes in PA between seasons. Methods: Thirty three adolescents (baseline age 12.2 ± 0.3y) wore the activPAL activity monitor for 8 days on two occasions. Results: Steps/day were higher in summer (Mdn = 12,879) than winter (Mdn = 10,512), p<.001. Steps/hour were significantly higher in summer compared to winter between 17:00 and 21:00 (p<. 044). No steps/day differences were found between boys and girls at either time point (p>.05), however, boys had significantly higher step counts in summer between '13:00-14:00' (p=.023), '19:00-20:00' (p=.032) and '20:00-21:00' (p=.023). Conclusion: Total steps/day masked sex differences within specific hours of the day, particularly evening times. Detailed daily patterns of PA are required to fully understand differences between sexes and across seasons.
Databáze:	MEDLINE
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