Moving through Life-Space Areas and Objectively Measured Physical Activity of Older People.
Moving through Life-Space Areas and Objectively Measured Physical Activity of Older People.
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DOI：
10.1371/journal.pone.0135308
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Rantakokko M
中科院分区：
文献类型：
--
作者：
Portegijs E;Tsai LT;Rantanen T;Rantakokko M
身体活动是老年人健康和功能的一个重要决定因素，可能会因所达到的生活空间而有所不同。我们的目的是研究如何通过更大的生活空间区域移动是与社区居住的老年人更大的身体活动。使用一周的纵向数据研究了同一个人在不同日期达到的客观测量的身体活动和生活空间面积之间的关联，以提供因果关系的见解。对来自"老年人生活空间流动性"队列子研究（N = 174）的芬兰中部社区居住的70 - 90岁老年人进行为期一周的客观评估体力活动监测。在2012年春天，参与者佩戴了7天的加速计，并完成了每日日记，包括达到的最大生活空间区域（家中，家外，社区，城镇和城镇以外）。每天的步数，和时间在中度（包括。步行）和低活动和久坐行为进行评估。使用广义估计方程模型（组内比较）测试不同生活空间区域的天数之间的体力活动差异。参与者的平均年龄为80.4 ± 4.2岁，63.5%为女性。参与者在从家到城镇的生活空间更大的日子里有更高的平均步数（p <0.001）和更多的中度和低度活动时间（p <0.001）。只有低活动时间继续增加时，移动到镇外。居住在社区的老年人在他们穿过更大的生活空间区域的日子里身体活动更多。虽然尚不清楚身体活动是否是离家的动机，但需要进行干预研究，以确定无论出于何种目的，促进日常户外活动是否有利于促进身体活动。
Physical activity–an important determinant of health and function in old age–may vary according to the life-space area reached. Our aim was to study how moving through greater life-space areas is associated with greater physical activity of community-dwelling older people. The association between objectively measured physical activity and life-space area reached on different days by the same individual was studied using one-week longitudinal data, to provide insight in causal relationships. One-week surveillance of objectively assessed physical activity of community-dwelling 70–90-year-old people in central Finland from the “Life-space mobility in old age” cohort substudy (N = 174). In spring 2012, participants wore an accelerometer for 7 days and completed a daily diary including the largest life-space area reached (inside home, outside home, neighborhood, town, and beyond town). The daily step count, and the time in moderate (incl. walking) and low activity and sedentary behavior were assessed. Differences in physical activity between days on which different life-space areas were reached were tested using Generalized Estimation Equation models (within-group comparison). Participants’ mean age was 80.4±4.2 years and 63.5% were female. Participants had higher average step counts (p < .001) and greater moderate and low activity time (p < .001) on days when greater life-space areas were reached, from the home to the town area. Only low activity time continued to increase when moving beyond the town. Community-dwelling older people were more physically active on days when they moved through greater life-space areas. While it is unknown whether physical activity was a motivator to leave the home, intervention studies are needed to determine whether facilitation of daily outdoor mobility, regardless of the purpose, may be beneficial in terms of promoting physical activity.