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首页> 美国卫生研究院文献>Preventive Medicine Reports >Seasonality in swimming and cycling: Exploring a limitation of accelerometer based studies
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Seasonality in swimming and cycling: Exploring a limitation of accelerometer based studies

机译：游泳和骑自行车中的季节性：探索基于加速度计的研究的局限性

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摘要

Accelerometer-based studies of children's physical activity have reported seasonal patterns in activity levels. However, the inability of many accelerometers to detect activity while the wearer is swimming or cycling may introduce a bias to the estimation of seasonality if participation in these activities are themselves seasonally patterned. We explore seasonal patterns in children's swimming and cycling among a sample of 7–8 year olds (N = 591) participating in the Millennium Cohort Study, UK. Participating children wore an accelerometer for one week on up to five occasions over the year and their parents completed a diary recording daily minutes spent swimming and cycling. Both swimming and cycling participation showed seasonal patterns, with 2.7 (SE 0.8) more minutes swimming and 5.7 (0.7) more minutes cycling performed in summer compared to winter. Adding swimming and cycling time to accelerometer-determined MVPA increased the summer-winter difference in MVPA from 16.6 (1.6) to 24.9 min. The seasonal trend in swimming and cycling appears to follow the same pattern as accelerometer-measured MVPA. Studies relying solely on accelerometers may therefore underestimate seasonal differences in children's activity.
机译：基于加速度计的儿童身体活动研究报告了活动水平的季节性模式。但是，如果佩戴者游泳或骑自行车时，许多加速度计无法检测活动，如果参与这些活动本身是季节性的，则可能会对季节性估算产生偏差。我们在参加英国千禧队列研究的7-8岁儿童（N = 591）中探索了儿童游泳和骑自行车的季节性模式。参加活动的儿童在一年中最多五次佩戴加速度计一周，而父母则完成了日记，记录了每天游泳和骑自行车所花费的时间。游泳和骑自行车都表现出季节性模式，与冬季相比，夏天游泳时间增加了2.7（SE 0.8）分钟，骑自行车时间增加了5.7（0.7）分钟。在加速度计确定的MVPA中增加游泳和骑车时间会使MVPA的夏季和冬季差异从16.6（1.6）增加到24.9分钟。游泳和骑自行车的季节性趋势似乎遵循与加速度计测量的MVPA相同的模式。因此，仅依靠加速度计进行的研究可能会低估儿童活动的季节性差异。

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