超重和正常体重青春期女孩的周末及工作日身体活动模式。
Weekend and weekday patterns of physical activity in overweight and normal-weight adolescent girls.
作者信息
Treuth Margarita S, Catellier Diane J, Schmitz Kathryn H, Pate Russell R, Elder John P, McMurray Robert G, Blew Robert M, Yang Song, Webber Larry
机构信息
Center for Human Nutrition, The Johns Hopkins Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD 21205, USA.
出版信息
Obesity (Silver Spring). 2007 Jul;15(7):1782-8. doi: 10.1038/oby.2007.212.
OBJECTIVE
To describe the patterns (specifically comparing weekdays and weekends classified by intensities) of physical activity (PA) measured by accelerometry in adolescent girls.
RESEARCH METHODS AND PROCEDURES
Healthy sixth grade girls (n=1603), 11 to 12 years old, were randomly recruited from 36 schools participating in the Trial of Activity in Adolescent Girls. Age, ethnicity, socioeconomic status, weight, and height were taken. PA patterns were measured for 6 days using accelerometry.
RESULTS
Adolescent girls spend most of their time in sedentary (52% to 57% of the day) and light activity (40% to 45% of the day) on weekdays and weekends. In all girls, total PA comprised 44.5% of the day (41.7% light, 2.2% moderate, and 0.7% vigorous) with sedentary activity comprising 55.4%. Moderate-to-vigorous PA (MVPA) was higher (p<0.001) on weekdays than weekends in all girls, but MVPA was lower in at-risk of overweight+overweight girls (p<0.001) on both weekdays and weekends compared with normal-weight girls.
DISCUSSION
Adolescent girls are more active at moderate and vigorous intensities on weekdays than on weekends, and at-risk of overweight and those overweight spend less time engaging in MVPA than normal-weight girls.
目的
描述通过加速度计测量的青春期女孩身体活动（PA）模式（特别是按强度对工作日和周末进行比较）。
研究方法与步骤
从参与青春期女孩活动试验的36所学校中随机招募11至12岁的健康六年级女孩（n = 1603）。记录年龄、种族、社会经济地位、体重和身高。使用加速度计测量6天的PA模式。
结果
青春期女孩在工作日和周末的大部分时间都处于久坐状态（占一天的52%至57%）和轻度活动状态（占一天的40%至45%）。在所有女孩中，总PA占一天时间的44.5%（轻度占41.7%，中度占2.2%，剧烈占0.7%），久坐活动占55.4%。所有女孩的中度至剧烈身体活动（MVPA）在工作日高于周末（p<0.001），但超重风险+超重女孩在工作日和周末的MVPA均低于正常体重女孩（p<0.001）。
讨论
青春期女孩在工作日的中度和剧烈强度活动比周末更活跃，超重风险女孩和超重女孩参与MVPA的时间比正常体重女孩少。
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