Association of muscle power with functional status in community-dwelling elderly women
Association of muscle power with functional status in community-dwelling elderly women
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DOI：
10.1093/gerona/55.4.m192
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发表时间：
2000-04-01
影响因子：
5.1
通讯作者：
Singh, MAF
中科院分区：
文献类型：
--
作者：
Foldvari, M;Clark, M;Singh, MAF
背景。确定与老年人群功能独立最相关的生理因素对于设计有效的干预措施至关重要。有人认为，老年人的肌肉力量可能比肌肉力量与身体机能受损更直接相关。我们测试了以下假设：峰值肌力与久坐的社区老年女性自我报告的功能状态密切相关。方法。我们使用的基线数据是一项为期 I 年的随机对照临床试验的一部分，该试验对 80 名患有 3.2 +/- 1.9 种慢性疾病的老年女性（平均年龄 74.8 +/- 5.0 岁）进行力量、爆发力和耐力训练联合计划，并选择基线功能障碍和/或跌倒。结果。在单变量分析中，基线的功能状态与生理能力、习惯性体力活动水平、神经心理状态和医学诊断相关。在我们测试的任何生理因素中，腿部力量与自我报告的功能状态具有最强的单变量相关性（r = -.47，p < .0001）。在向前逐步回归模型中，腿举力量和习惯性体力活动水平是唯一两个独立影响功能状态的因素（r = .64，p < .0001），占功能状态方差的 40%。结论。腿部力量是老年女性自我报告的功能状态的有力预测指标。
Background. Identification of the physiologic factors most relevant to functional independence in the elderly population is critical for the design of effective interventions. It has been suggested that muscle power may be more directly related to impaired physical performance than muscle strength in elderly persons. We tested the hypothesis that peak muscle power is closely associated with self-reported functional status in sedentary elderly community-dwelling women.Methods. We used baseline data that were collected as part of a I-year randomized controlled clinical trial of a combined program of strength, power, and endurance training in 80 elderly women (mean age 74.8 +/- 5.0 years) with 3.2 +/- 1.9 chronic diseases, selected for baseline functional impairment and/or falls.Results. Functional status at baseline was related in univariate analyses to physiologic capacity, habitual physical activity level, neuropsychological status, and medical diagnoses. Leg power had the strongest univariate correlation to self-reported functional status (r = -.47, p < .0001) of any of the physiologic factors we tested. In a forward stepwise regression model, leg press power and habitual physical activity level were the only two factors that contributed independently to functional status (r = .64, p < .0001), accounting for 40% of the variance in functional status.Conclusions. Leg power is a strong predictor of self-reported functional status in elderly women.