Bidirectional associations of accelerometer-determined sedentary behavior and physical activity with reported time in bed: Women's Health Study.
Bidirectional associations of accelerometer-determined sedentary behavior and physical activity with reported time in bed: Women's Health Study.
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DOI：
10.1016/j.sleh.2016.10.001
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发表时间：
2017-02
期刊：
影响因子：
4.1
通讯作者：
Lee IM
中科院分区：
文献类型：
--
作者：
Pettee Gabriel K;Sternfeld B;Shiroma EJ;Pérez A;Cheung J;Lee IM
在一大批老年妇女中，研究由加速度计得出的久坐行为和身体活动（PA）与卧床时间的日常双向关联。数据来自10086名女性健康研究参与者[年龄71.6 (SD): 5.7]岁，他们同意连续7天佩戴加速度计并完成日记。使用重复测量的广义线性（多层次）模型来检验调整后的相关性：(1)报告的卧床时间与第二天加速度计确定的计数和久坐时间以及轻、中、高强度PA (MVPA);(2)加速度计估计与当晚报告的卧床时间，表示为短睡眠（<7小时）、最佳睡眠（7-9小时）和长睡眠（10 -9小时）。在数天内，短睡眠与第二天平均5,500 （SE: 1,352）较高的加速度计计数相关，但也与最佳睡眠的平均久坐时间[46.5 （SE: 1.5）分钟]和低强度PA [11.9 （SE: 1.2）分钟]相关（均P<0.001）。与最佳睡眠相比，长时间睡眠与较低的加速度计计数、久坐时间和低强度PA以及从事≥20分钟MVPA的可能性降低相关（均P<0.001）。白天较高的PA（较高的加速度计计数和≥20分钟的累积MVPA）与当晚报告短睡眠或长睡眠的可能性降低相关（均P<0.001）。研究结果支持加速度计测定的久坐行为和PA与老年女性卧床时间的双向关联。需要进一步的研究来证实老年妇女睡眠活动记录仪的发现。
To examine the day-to-day, bidirectional associations of accelerometer-derived sedentary behavior and physical activity (PA) with reported time-in-bed in a large cohort of older women. Data are from 10,086 Women’s Health Study participants [aged 71.6 (SD): 5.7] years who agreed to wear an accelerometer and complete a diary for seven, consecutive days. Generalized linear (multi-level) models with repeated measures were used to examine the adjusted associations of: (1) reported time-in-bed with next-day accelerometer-determined counts and time spent sedentary and in light and moderate- to vigorous- intensity PA (MVPA) and (2) accelerometer estimates with reported time-in-bed that night, expressed as short (<7 hours), optimal (7-9 hours), and long (>9 hours) sleep. Across days, short sleep was associated with an average of 5,500 (SE: 1,352) higher accelerometer counts the following day, but was also related to higher average sedentary [46.5 (SE: 1.5) minutes] and light intensity PA [11.9 (SE: 1.2) minutes] than optimal sleep (all P<0.001). Long sleep was associated with lower accelerometer counts, time spent sedentary and in light intensity PA, and a reduced likelihood of engaging in ≥20 minutes of MVPA (all P<0.001) than optimal sleep. Higher PA during the day (higher accelerometer counts and ≥20 minutes of accumulated MVPA) was associated with a reduced likelihood of reporting short or long sleep that night (all P<0.001). Findings support the bidirectional associations of accelerometer-determined sedentary behavior and PA with reported time-in-bed in older women. Future studies are needed to confirm findings with sleep actigraphy in older women.