Activity Behaviors in British 6-Year-Olds: Cross-Sectional Associations and Longitudinal Change During the School Transition.
Activity Behaviors in British 6-Year-Olds: Cross-Sectional Associations and Longitudinal Change During the School Transition.
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DOI：
10.1123/jpah.2021-0718
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发表时间：
2022-08-01
影响因子：
3.1
通讯作者：
Van Sluijs EMF
中科院分区：
文献类型：
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作者：
Hesketh KR;Brage S;Inskip HM;Crozier SR;Godfrey KM;Harvey NC;Cooper C;Van Sluijs EMF
为了探索入学时的活动行为，我们描述了加速计测量的6岁英国儿童体力活动与时间/人口统计学的关联，并考察了4-6岁年龄段的变化。712名6岁儿童(两个年龄段均为308人)佩戴有源心脏加速度计≥3天(平均6.0d)。我们得出了每天久坐不动的分钟(<；20cpm)和中等到剧烈的体力活动(MVPA，≥460cpm)，也分为早上(06：00-09：00)、学校(09：00-15：00)和晚上(15：00-23：00)。使用混合效应线性回归，我们分析了时间/人口因素与儿童6岁时的活动强度以及4-6岁之间的变化之间的关系。6岁儿童的平均(SD)MVPA为64.9(25.7)分钟/天(53%符合英国标准)。女孩的MVPA比男孩少，特别是在上学时间。儿童在周末(与工作日相比)不那么活跃，而在春夏晚上(与冬季相比)更活跃。纵向上，与4岁儿童相比，6岁儿童的LPA较少(-44.7[95%C.I.：-49.9，-39.6]分钟/天)，但更多地坐着(30.0[24.5，35.5]分钟)，从事更多的MVPA(7.6[5.6，9.7])。有一半的6岁儿童符合当前的活动指南；女孩和周末的MVPA水平较低。进入正规学校后，英国儿童变得更久坐不动，但更多地进行MVPA。PA推广工作应该利用MVPA的这些变化，以保持积极的习惯。
To explore activity behaviours at school entry, we describe temporal/demographic associations with accelerometer-measured physical activity in a population-based sample of British 6-year-olds, and examine change from age 4-6. 712 6-year-olds (308 at both ages) wore Actiheart accelerometers for ≥3 (mean 6.0) days. We derived minutes/day sedentary (<20cpm) and moderate-to-vigorous physical activity (MVPA, ≥460cpm), also segmented across mornings (06:00-09:00), school (09:00-15:00) and evenings (15:00-23:00). Using mixed-effects linear regression, we analyzed associations between temporal/demographic factors and children’s activity intensities at age 6, and change between ages 4-6. 6-year-old children engaged in mean(SD) MVPA: 64.9(25.7) minutes/day (53% met UK guidelines). Girls did less MVPA than boys, particularly during school hours. Children were less active at weekends (vs. weekdays) and more active on spring/summer evenings (vs. winter). Longitudinally, 6-year-old children did less LPA (-44.7 [95%C.I.:-49.9,-39.6] minutes/day) but were more sedentary (30.0 [24.5,35.5]) and engaged in greater MVPA (7.6 [5.6,9.7]) compared with when aged 4. Half of 6-year-old children met current activity guidelines; MVPA levels were lower in girls and at weekends. UK children became more sedentary but did more MVPA as they entered formal schooling. PA promotion efforts should capitalise on these changes in MVPA, to maintain positive habits.