Between- and within-day variability in physical activity and inactivity in 9-and 15-year-old European children
Between- and within-day variability in physical activity and inactivity in 9-and 15-year-old European children
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DOI：
10.1111/j.1600-0838.2007.00762.x
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发表时间：
2009-02-01
影响因子：
4.1
通讯作者：
Ekelund, U.
中科院分区：
文献类型：
--
作者：
Nilsson, A.;Anderssen, S. A.;Ekelund, U.
为了研究身体活动（PA）水平的差异，研究对象包括来自四个欧洲国家的1954年9岁和15岁的儿童，他们在几天之间和几天内进行中等到高强度的PA （MVPA）的时间和久坐的时间。在2个工作日和2个周末使用制造技术结合（MTI）加速度计测量PA。计算每分钟平均计数、久坐时间、MVPA时间以及累积>= 60 min MVPA的儿童比例。数据在工作日和周末以及上学时间和休闲时间之间进行了比较。虽然不同国家之间并不完全一致，但与周末相比，工作日的总体PA、久坐时间和儿童累积>= 60分钟MVPA的比例更高。在学校时间和闲暇时间之间的总体PA差异在国家之间是高度不一致的。很少有儿童（4-31%）在上学时间或休闲时间累积>= 60分钟的MVPA。活动模式在工作日和周末之间的差异可以用周末MVPA累积时间较少来解释。周末和工作日的休闲时间似乎是促进PA的适当目标，以便提高实现目前关于增进健康的PA建议的儿童比例。
To examine differences in levels of physical activity (PA), time spent at moderate-to-vigorous intensity PA (MVPA) and time spent sedentary between and within days in children from four European countries, 1954 9 - and 15-year-olds were included. PA was measured during 2 weekdays and 2 weekend days using the manufacturing technology-incorporated (MTI) accelerometer. Average count per minute, time spent sedentary, time spent at MVPA and the proportion of children accumulating >= 60 min of MVPA were calculated. Data were compared between weekdays and weekend days and between school time and leisure-time. Although not entirely consistent across countries, overall PA, time spent sedentary and the proportion of children accumulating >= 60 min of MVPA were higher during weekdays compared with weekend days. Differences in overall PA between school time and leisure-time were highly inconsistent between countries. Few children (4-31%) accumulated >= 60 min of MVPA either during school time or during leisure-time. Differences in activity patterns between weekdays and weekend days are explained by less accumulated time in MVPA during weekend days. Weekend days and leisure-time during weekdays seem appropriate targets when promoting PA in order to increase the proportion of children achieving current recommendations on health-enhancing PA.