da Silva Coqueiro Raildo, de Queiroz Bruno M, Oliveira Daniela S, das Merces Magno C, Oliveira Carneiro José A, Pereira Rafael, Fernandes Marcos H
Department of Health, State University of Southwestern Bahia (UESB), Jequié, Brazil -
Center for Studies in the Epidemiology of Aging, State University of Southwestern Bahia (NEPE - UESB), Jequie, Brazil -
J Sports Med Phys Fitness. 2017 Jun;57(6):825-830. doi: 10.23736/S0022-4707.16.06289-7. Epub 2016 Mar 9.
The aim of this study was to analyze the association between frailty and sedentary behavior and to examine the discriminative ability of sedentary behavior in screening frailty in older adults.
This was a cross-sectional study based on data from an epidemiologic population-based household survey involving 316 community-dwelling older adults (≥60 years) of both sexes (173 women and 143 men). The frailty was measured from an adapted version of the criteria proposed by Fried et al. in 2001, which is based on the presence of three or more of the following components: shrinking, weakness, poor endurance/exhaustion, slowness and low activity. Sedentary behavior was determined by the International Physical Activity Questionnaire (long version).
The prevalence of frailty was 23.8%, and the average time in sedentary behavior was 6.1±3.2 h/day. Sedentary behavior was independently and positively associated with frailty (PR=1.10; 95% CI: 1.02-1.19; P=0.013). The ROC curve showed that the sedentary behavior could discriminate frail older adults (AUC=0.66; 95% CI: 0.61-0.72), and the best cutoff point was 7 h/day (sensitivity =54% and specificity =75%).
Frailty is strongly associated with sedentary behavior. Sedentary behavior can be a potential marker in screening of frailty in community-dwelling older adults. Our findings suggest that reducing the time with sedentary behavior and increasing the time with physical activity may prevent frailty syndrome.
本研究旨在分析衰弱与久坐行为之间的关联，并检验久坐行为在筛查老年人衰弱方面的判别能力。
这是一项横断面研究，基于一项基于人群的流行病学家庭调查数据，该调查涉及316名60岁及以上的社区居住老年人（男女皆有，173名女性和143名男性）。衰弱程度采用2001年Fried等人提出的标准的改编版进行测量，该标准基于以下三个或更多组成部分的存在：体重减轻、虚弱、耐力差/易疲劳、行动迟缓及活动量低。久坐行为通过国际体力活动问卷（长版）进行测定。
衰弱的患病率为23.8%，久坐行为的平均时长为6.1±3.2小时/天。久坐行为与衰弱独立且呈正相关（PR=1.10；95%置信区间：1.02-1.19；P=0.013）。ROC曲线显示，久坐行为能够区分衰弱的老年人（AUC=0.66；95%置信区间：0.61-0.72），最佳截断点为7小时/天（敏感性=54%，特异性=75%）。
衰弱与久坐行为密切相关。久坐行为可能是筛查社区居住老年人衰弱的一个潜在指标。我们的研究结果表明，减少久坐时间并增加体力活动时间可能预防衰弱综合征。
