Tracking of objectively measured physical activity from childhood to adolescence: The European youth heart study
Tracking of objectively measured physical activity from childhood to adolescence: The European youth heart study
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DOI：
10.1111/j.1600-0838.2006.00622.x
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发表时间：
2008-04-01
影响因子：
4.1
通讯作者：
Froberg, K.
中科院分区：
文献类型：
--
作者：
Kristensen, P. L.;Moller, N. C.;Froberg, K.
许多研究调查了从童年到青春期的身体活动跟踪，一般来说，这些研究是基于具有一定程度主观性的方法（例如，问卷调查）。本研究的目的是评估跟踪的身体活动从童年到青春期使用加速度计，考虑到身体活动的变化的主要来源。一个粗略的和调整后的模型进行了拟合，并在调整后的模型中，分析进行了校正的季节性变化，周内变化，活动登记在夜间睡眠，仪器测量误差，和日常的身体活动的变化。总共有208例受试者被纳入粗分析。从粗模型估计的稳定性系数较低（即，0.18男孩和女孩分别为0.19），只有临界显著性。然而，在调整后的模型非常显着的稳定系数为0.53和0.48的男孩和女孩，分别观察到。结果表明，从儿童期到青春期，体力活动行为倾向于适度跟踪。
A number of studies have investigated tracking of physical activity from childhood to adolescence and, in general, these studies have been based on methods with some degree of subjectivity (e.g., questionnaires). The aim of the present study was to evaluate tracking of physical activity from childhood to adolescence using accelerometry, taking into account major sources of variation in physical activity. Both a crude and an adjusted model was fitted, and, in the adjusted model, analyses were corrected for seasonal variation, within-week variation, activity registration during night time sleep, within instrumental measurement error, and day-to-day variation in physical activity. In all, 208 subjects were included in the crude analyses. Stability coefficients estimated from the crude model were low (i.e., 0.18 and 0.19 for boys and girls, respectively) and only borderline significant. However, in the adjusted model highly significant stability coefficients of 0.53 and 0.48 for boys and girls, respectively, were observed. It was concluded that physical activity behavior tends to track moderately from childhood to adolescence.