Stony Brook University, NY, USA.
The University of Alabama, Tuscaloosa, USA.
J Aging Health. 2020 Oct;32(9):921-925. doi: 10.1177/0898264319863609. Epub 2019 Jul 18.
Fatigue is commonly reported by persons with osteoarthritis (OA) and predicts worse functioning and decreased activity. The current research used a combination of wrist and waist accelerometry along with experience sampling methodology to examine the relationship between reports of fatigue and subsequent physical activity among older adults with knee OA. Two hundred one participants completed an interview followed by a 1-week period during which their activity was monitored and they reported symptoms of pain and fatigue. Multilevel models examined within-subjects versus between-subjects patterns of symptoms and their association with physical activity. Fatigue was the most consistent predictor of lowered physical activity (β = -20.83, < .001). Although wrist-worn actigraphs produced higher averaged activity counts than did waist actigraphs ( = 34.68, < .001), multilevel models showed consistent results regardless of placement. Fatigue was a consistent predictor of lowered activity regardless of actigraph location.
疲劳是骨关节炎（OA）患者常见的症状，它预示着更差的功能和减少的活动。目前的研究使用手腕和腰部加速度计的组合以及经验采样方法，来研究膝骨关节炎老年人中疲劳报告与随后的体力活动之间的关系。201 名参与者完成了一次访谈，随后进行了为期一周的监测，在此期间他们报告了疼痛和疲劳的症状。多层次模型检查了症状的个体内与个体间模式及其与体力活动的关系。疲劳是体力活动降低的最一致预测因素（β=-20.83，<.001）。尽管手腕佩戴的活动计比腰部活动计产生的平均活动计数更高（=34.68，<.001），但多层次模型无论放置位置如何都显示出一致的结果。疲劳是降低活动的一致预测因素，无论活动计的位置如何。
