Fatigue May Contribute to Reduced Physical Activity Among Older People: An Observational Study
Fatigue May Contribute to Reduced Physical Activity Among Older People: An Observational Study
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DOI：
10.1093/gerona/glv150
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发表时间：
2016-05-01
影响因子：
5.1
通讯作者：
Helbostad, Jorunn L.
中科院分区：
文献类型：
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作者：
Egerton, Thorlene;Chastin, Sebastien F. M.;Helbostad, Jorunn L.
背景：疲劳是初级保健中最常见的症状之一，老年人认为疲劳是一种压倒性和痛苦的体验，限制了他们的活动和社会参与。自我报告的疲劳是复杂的和多因素的，对老年人的原因和影响相对知之甚少。这项研究在一大批老年人中测试了疲劳和客观测量的体力活动之间的关联，并确定了可能解释这种关联的因素。方法：使用980名生活在社区的70岁到77岁的横断面数据，测试自我报告的疲劳与基于加速计的活动监测器得出的四种体力活动结果之间的关联。评估了年龄、性别、体重指数(BMI)、身体状况、共病、抑郁和睡眠质量对减重效果的影响。结果：9%的样本报告疲劳。与不疲倦的人相比，疲倦的人每天少走1150步，少做9分钟的中等强度运动，每天少做12分钟的运动，每分钟的次数减少15%。体重指数、身体状况和共病减弱了这种关联，包括这些变量的最终回归模型解释了疲劳和活动之间的大部分(56%-72%)关联。结论：疲劳与老年人日常体力活动水平的临床重要减少有关。研究结果表明，体重指数、身体状况(特别是心肺健康)和共病是解释疲劳与体力活动关联的重要因素。修改这些因素可能会通过减轻疲劳来促进日常活动水平的提高。
Background: Fatigue is one of the most commonly reported symptoms in primary care and perceived by older people as an overwhelming and distressing experience that restricts their activity and social participation. Self-reported fatigue is complex and multifactorial, with relatively little known about the causes and impacts among older people. This study tested the association between fatigue and objectively measured physical activity in a large cohort of older adults and identified factors that may explain this association.Methods: Using cross-sectional data from 980 community-living 70- to 77-year-olds, the associations between self-reported fatigue and four physical activity outcomes derived from an accelerometer-based activity monitor were tested. Attenuating effects on the association of age, gender, body mass index (BMI), physical condition, comorbidity, depression, and sleep quality were evaluated.Results: Nine percent of the sample reported being fatigued. Fatigued individuals had 1,150 fewer steps/day, 9 minutes/day less of moderatevigorous activity, 12 minutes/day less of daily activity, and 15% fewer counts/minute, when compared with those not fatigued. BMI, physical condition, and comorbidity attenuated the association, and final regression models including these variables explained most (56%-72%) of the association between fatigue and activity.Conclusions: Fatigue was associated with clinically important reductions in daily physical activity levels of older people. The findings show BMI, physical condition (in particular cardiorespiratory fitness), and comorbidity to be important factors in explaining the fatigue-physical activity association. Modification of these factors may facilitate increases in daily activity levels by lessening fatigue.