Objectively measured physical activity in four-year-old British children: a cross-sectional analysis of activity patterns segmented across the day.
Objectively measured physical activity in four-year-old British children: a cross-sectional analysis of activity patterns segmented across the day.
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DOI：
10.1186/1479-5868-11-1
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发表时间：
2014-01-09
期刊：
影响因子：
--
通讯作者：
van Sluijs EM
中科院分区：
文献类型：
--
作者：
Hesketh KR;McMinn AM;Ekelund U;Sharp SJ;Collings PJ;Harvey NC;Godfrey KM;Inskip HM;Cooper C;van Sluijs EM
关于学龄前儿童一天中身体活动（PA）的水平知之甚少。使用时间戳的数据，我们描述了PA的水平和模式，在人口为基础的样本，四岁的英国儿童。在南安普顿妇女调查中，使用（Actiheart）加速度计测量了593名4岁儿童（51%为女性）的PA水平长达7天。三项结果指标：得出久坐（<20 cpm）、光照（LPA：≥20 - 399 cpm）和中度至剧烈活动（MVPA：≥400 cpm）的分钟数。计算平均每日活动水平，然后在一天中（上午，下午和晚上）分段。MVPA进行对数转换。两个水平的随机截距模型被用来分析活动水平和时间和人口因素之间的关联。儿童平均每天活动时间占登记时间的67%（平均568.5 SD 79.5分钟），其中88%的活动时间花在LPA上。所有儿童都符合英国现行的每日活动180分钟的指南。儿童的平均每日久坐活动水平和LPA的时间和人口因素没有差异：差异确实出现时，活动在一天中分段。早上的性别差异最大，女孩更久坐，在LPA上花费的时间更少，在MVPA上花费的时间比男孩少18%。如果孩子们全职参加托儿服务，与兼职相比，孩子们早上久坐不动，活动较少（LPA和MVPA），周末早上与工作日相比。周末下午和晚上的情况正好相反。母亲受教育程度较高的孩子晚上活动较少。孩子们久坐不动，做更多的MVPA在夏天晚上比冬天晚上。学龄前儿童符合当前的体育活动指南，但由于他们的大部分活动时间都花在LPA上，因此需要调查活动强度在幼儿中的重要性。一天中的活动水平因人口和时间因素而异，突出表明需要在未来的干预措施中考虑时间性。增加女孩的晨间活动，并在冬季提供白天活动的机会，可能是值得的。
Little is known about preschool-aged children’s levels of physical activity (PA) over the course of the day. Using time-stamped data, we describe the levels and patterns of PA in a population-based sample of four-year-old British children. Within the Southampton Women’s Survey the PA levels of 593 4-year-old children (51% female) were measured using (Actiheart) accelerometry for up to 7 days. Three outcome measures: minutes spent sedentary (<20 cpm); in light (LPA: ≥20 – 399 cpm) and in moderate-to-vigorous activity (MVPA: ≥400 cpm) were derived. Average daily activity levels were calculated and then segmented across the day (morning, afternoon and evening). MVPA was log-transformed. Two-level random intercept models were used to analyse associations between activity level and temporal and demographic factors. Children were active for 67% (mean 568.5 SD 79.5 minutes) of their daily registered time on average, with 88% of active time spent in LPA. All children met current UK guidelines of 180 minutes of daily activity. There were no differences in children’s average daily levels of sedentary activity and LPA by temporal and demographic factors: differences did emerge when activity was segmented across the day. Sex differences were largest in the morning, with girls being more sedentary, spending fewer minutes in LPA and 18% less time in MVPA than boys. Children were more sedentary and less active (LPA and MVPA) in the morning if they attended childcare full-time compared to part-time, and on weekend mornings compared to weekdays. The reverse was true for weekend afternoons and evenings. Children with more educated mothers were less active in the evenings. Children were less sedentary and did more MVPA on summer evenings compared to winter evenings. Preschool-aged children meet current physical activity guidelines, but with the majority of their active time spent in LPA, investigation of the importance of activity intensity in younger children is needed. Activity levels over the day differed by demographic and temporal factors, highlighting the need to consider temporality in future interventions. Increasing girls’ morning activity and providing opportunities for daytime activity in winter months may be worthwhile.
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影响因子：
120.7
作者：
Ekelund, Ulf;Luan, Jian'an;Sherar, Lauren B.;Esliger, Dale W.;Griew, Pippa;Cooper, Ashley
通讯作者：
Cooper, Ashley
DOI：
10.1249/01.mss.0000176466.78408.cc
发表时间：
2005-10-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
Corder, K;Brage, S;Ekelund, U
通讯作者：
Ekelund, U
DOI：
10.1038/oby.2003.57
发表时间：
2003-03-01
期刊：
OBESITY RESEARCH
影响因子：
--
作者：
Jackson, DM;Reilly, JJ;Paton, JY
通讯作者：
Paton, JY
影响因子：
3.1
作者：
Adolph, Anne L.;Puyau, Maurice R.;Butte, Nancy F.
通讯作者：
Butte, Nancy F.
DOI：
10.1359/jbmr.091022
发表时间：
2010-04
期刊：
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research
影响因子：
--
作者：
Harvey NC;Mahon PA;Robinson SM;Nisbet CE;Javaid MK;Crozier SR;Inskip HM;Godfrey KM;Arden NK;Dennison EM;Cooper C;SWS Study Group
通讯作者：
SWS Study Group