Duration and breaks in sedentary behaviour: accelerometer data from 1566 community-dwelling older men (British Regional Heart Study).
Duration and breaks in sedentary behaviour: accelerometer data from 1566 community-dwelling older men (British Regional Heart Study).
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DOI：
10.1136/bjsports-2014-093514
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发表时间：
2015-12
影响因子：
18.4
通讯作者：
Lee IM
中科院分区：
文献类型：
--
作者：
Jefferis BJ;Sartini C;Shiroma E;Whincup PH;Wannamethee SG;Lee IM
人们越来越认识到，久坐行为会增加心血管疾病事件、糖尿病和死亡率的风险，而与身体活动水平无关。然而，对老年人久坐行为的模式知之甚少。来自英国人群队列研究的1566/3137例（50%应答）71-91岁男性的横断面研究。2010-2011年，男性在臀部佩戴GT 3x加速计1周。计算久坐行为的平均每日分钟数、久坐行为的天数百分比、久坐发作和休息时间，并按健康和人口统计学特征进行总结。1403例年龄为78.4岁（SD=4.6岁）、加速度计佩戴≥600分钟、持续≥3天的非卧床男性具有完整的协变量数据。 男性平均花费618分钟（SD=83），或72%的一天在久坐不动的行为（<100计数/分钟）。 平均而言，男性每天累积72次久坐行为，每个久坐小时有7次休息。男性平均有5.1次≥30分钟的久坐发作，占久坐时间的43%，1.4次≥60分钟，占每日久坐时间的19%。 80岁以上、肥胖、抑郁和患有多种慢性疾病的男性会积累更多的久坐时间，并在更长的久坐时间中花费更多的时间。 老年男性一天中有近四分之三的时间处于久坐状态，大多数是在短时间内积累的，尽管持续≥30分钟的发作占每天久坐时间的近一半。 有医疗风险因素的男性更有可能表现出久坐不动的行为。
Sedentary behaviours are increasingly recognised as raising the risk of cardiovascular disease events, diabetes and mortality, independently of physical activity levels. However, little is known about patterns of sedentary behaviour in older adults. Cross-sectional study of 1566/3137 (50% response) men aged 71–91 years from a UK population-based cohort study. Men wore a GT3x accelerometer over the hip for 1 week in 2010–2011. Mean daily minutes of sedentary behaviours, percentage of day in sedentary behaviours, sedentary bouts and breaks were calculated and summarised by health and demographic characteristics. 1403 ambulatory men aged 78.4 years (SD=4.6 years) with ≥600 min of accelerometer wear on ≥3 days had complete data on covariables. Men spent on average 618 min (SD=83), or 72% of their day in sedentary behaviours (<100 counts/min). On average, men accumulated 72 spells of sedentary behaviours per day, with 7 breaks in each sedentary hour. Men had on average 5.1 sedentary bouts of ≥30 min, which accounted for 43% of sedentary time, and 1.4 bouts of ≥60 min, which accounted for 19% of daily sedentary time. Men who were over 80 years old, obese, depressed and had multiple chronic conditions accumulated more sedentary time and spent more time in longer sedentary bouts. Older men spend nearly three quarters of their day in sedentary behaviours, mostly accumulated in short bouts, although bouts lasting ≥30 min accounted for nearly half of the sedentary time each day. Men with medical risk factors were more likely to also display sedentary behaviour.