Association of light exposure on physical activity and sedentary time in young people.
Association of light exposure on physical activity and sedentary time in young people.
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DOI：
10.3390/ijerph120302941
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发表时间：
2015-03-10
影响因子：
--
通讯作者：
Hamer M
中科院分区：
文献类型：
--
作者：
Aggio D;Smith L;Fisher A;Hamer M
背景：调查光照是否与青少年客观测量的身体活动（PA）和久坐行为相关。
方法：参与者（n = 229，46.7%为女性）是来自英国卡姆登区的青少年（平均年龄8.8岁[标准差±2.2]）。在夏季使用带有环境光传感器的三轴加速度计测量每日久坐时间、中等强度和高强度身体活动（MVPA）以及光照。多元线性回归模型检验了平均每日光照、久坐时间和MVPA时间之间的关联。分别对工作日和周末重复该模型。分析针对预先指定的协变量进行了调整，包括年龄、性别、设备佩戴时间、种族、学校和体脂。
结果：平均每日光照与久坐时间（β系数 = -11.2，95%置信区间，-19.0至-3.4）以及MVPA（β系数 = 3.5，95%置信区间，1.2至5.9）之间存在显著关联。光照与周末久坐时间（β系数 = -10.0，95%置信区间，-17.6，-2.4）、周末MVPA（β系数 = 3.7，95%置信区间，1.7，5.7）、工作日久坐时间（β系数 = -15.0，95%置信区间，-22.7至-7.2）显著相关，但与工作日MVPA（β系数 = 2.0，95%置信区间，-0.5至4.5）无关。
结论：平均每日光照与MVPA时间呈正相关，与久坐时间呈负相关。增加日光暴露可能是促进身体活动的一种有用的干预策略。
Background: To investigate whether light exposure was associated with objectively measured physical activity (PA) and sedentary behaviour in young people. Methods: Participants (n = 229, 46.7% female) were young people (mean 8.8 years [SD ± 2.2]) from the borough of Camden, UK. Daily sedentary time, moderate and vigorous PA (MVPA) and light exposure were measured using a tri-axial accelerometer with an ambient light sensor during the summer. Multiple linear regression models examined associations between average daily light exposure, sedentary time and time in MVPA. Models were repeated investigating weekdays and weekend days separately. Analyses were adjusted for pre-specified covariables, including age, sex, device wear time, ethnic group, school and body fat. Results: There were significant associations between average daily light exposure and time sedentary (β coefficient = −11.2, 95% CI, −19.0 to −3.4) and in MVPA (β coefficient = 3.5, 95% CI, 1.2 to 5.9). Light exposure was significantly associated with weekend sedentary time (β coefficient = −10.0, 95% CI, −17.6, −2.4), weekend MVPA (β coefficient = 3.7, 95% CI, 1.7, 5.7), weekday sedentary time (β coefficient = −15.0, 95% CI, −22.7 to −7.2), but not weekday MVPA (β coefficient = 2.0, 95% CI, −0.5 to 4.5). Conclusion: Average daily light exposure is positively associated with time in MVPA and negatively associated with sedentary time. Increasing daylight exposure may be a useful intervention strategy for promoting physical activity.
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影响因子：
120.7
作者：
Ekelund, Ulf;Luan, Jian'an;Sherar, Lauren B.;Esliger, Dale W.;Griew, Pippa;Cooper, Ashley
通讯作者：
Cooper, Ashley
影响因子：
4.8
作者：
Mytton OT;Townsend N;Rutter H;Foster C
通讯作者：
Foster C
DOI：
10.1186/1479-5868-7-31
发表时间：
2010-04-22
期刊：
The international journal of behavioral nutrition and physical activity
影响因子：
--
作者：
Cooper AR;Page AS;Wheeler BW;Hillsdon M;Griew P;Jago R
通讯作者：
Jago R
影响因子：
4.9
作者：
Cleland, V.;Crawford, D.;Salmon, J.
通讯作者：
Salmon, J.
影响因子：
--
作者：
Mattocks, Calum;Leary, Sam;Riddoch, Chris
通讯作者：
Riddoch, Chris