Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
J Occup Environ Med. 2011 Dec;53(12):1382-7. doi: 10.1097/JOM.0b013e31823c1402.
To determine time spent on the working day in sleep, work, sedentary behaviors, and light-, moderate-, and vigorous-intensity behaviors by occupation intensity.
Data came from 30,758 working respondents to the 2003 to 2009 American Time Use Survey. Mean ± SEM time spent in work, sedentary behaviors, light-, moderate-, and vigorous-intensity activities, and sleep were computed by occupations classified as sedentary, light, moderate, and vigorous intensity.
On average, approximately 32% of the 24-hour day was spent sleeping and approximately 31% was spent at work. Time spent in sedentary behaviors outside of work was higher, and light-intensity time was lower, with higher levels of intensity-defined occupation.
Those employed in sedentary occupations were sedentary for approximately 11 hours per day, leaving little time to achieve recommended levels of physical activity for overall health.
根据职业强度确定工作日内用于睡眠、工作、久坐行为以及低强度、中强度和高强度活动的时间。
数据来自于 2003 年至 2009 年美国时间使用调查中 30758 名有工作的受访者。根据久坐、低强度、中强度和高强度活动的职业分类，计算出工作、久坐行为、低强度、中强度和高强度活动以及睡眠的平均 ± SEM 时间。
平均而言，每天 24 小时中大约有 32%用于睡眠，大约 31%用于工作。非工作时久坐行为的时间较长，而低强度活动的时间较短，职业强度越高，久坐行为的时间就越长。
从事久坐职业的人每天大约要久坐 11 小时，几乎没有时间达到整体健康所需的推荐体力活动水平。
