Seasonal variation in household, occupational, and leisure time physical activity: Longitudinal analyses from the seasonal variation of blood cholesterol study
Seasonal variation in household, occupational, and leisure time physical activity: Longitudinal analyses from the seasonal variation of blood cholesterol study
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DOI：
10.1093/aje/153.2.172
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发表时间：
2001-01-15
影响因子：
5
通讯作者：
Ockene, IS
中科院分区：
文献类型：
--
作者：
Matthews, CE;Freedson, PS;Ockene, IS
作者对马萨诸塞州伍斯特市的 580 名健康成年人进行了纵向分析，研究了体力活动的季节性变化（血液胆固醇季节性变化研究，1994-1998 年）。在 12 个月的随访期间进行了 5 次 3 次 24 小时体力活动回忆，用于估计家庭、职业、休闲时间和以代谢当量 (MET) 小时/天为单位的总体力活动水平。三角模型用于估计一年中活动峰值到谷值的幅度和相位。与冬季相比，夏季男性的总活动量增加了 1.4 MET 小时/天（121 kcal/天），女性的总活动量增加了 1.0 MET 小时/天（70 kcal/天）。夏季，中等强度的非职业活动每天增加 2.0-2.4 MET 小时。夏季期间，客观测量的男性平均体力活动增加了 51 分钟/天（95% 置信区间：20、82），女性每天平均体力活动增加了 16 分钟（95% 置信区间：-12、45）。作者观察到季节性变化的复杂模式，其幅度和阶段因活动类型和强度以及受试者特征（即年龄、肥胖和运动）而变化。这些发现对于检查身体活动对健康的影响的临床研究以及旨在提高人口身体活动水平的健康促进工作具有重要意义。
The authors examined seasonal variation in physical activity in longitudinal analyses of 580 healthy adults from Worcester, Massachusetts (the Seasonal Variation of Blood Cholesterol Study, 1994-1998). Three 24-hour physical activity recalls administered five times during 12 months of follow-up were used to estimate household, occupational, leisure time, and total physical activity levels in metabolic equivalent (MET)-hours/day. Trigonometric models were used to estimate the peak-to-trough amplitude and phase of the peaks in activity during the year. Total activity increased by 1.4 MET-hours/day (121 kcal/day) in men and 1.0 MET-hours/day (70 kcal/day) in women during the summer in comparison with winter. Moderate intensity nonoccupational activity increased by 2.0-2.4 MET-hours/day in the summer. During the summer, objectively measured mean physical activity increased by 51 minutes/day (95% confidence interval: 20, 82) in men and by 16 minutes/day (95% confidence interval: -12, 45) in women. The authors observed complex patterns of seasonal change that varied in amplitude and phase by type and intensity of activity and by subject characteristics (i.e., age, obesity, and exercise). These findings have important implications for clinical research studies examining the health effects of physical activity and for health promotion efforts designed to increase population levels of physical activity.