School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada.
J Aging Health. 2011 Mar;23(2):313-28. doi: 10.1177/0898264310388562. Epub 2010 Nov 16.
The purposes of this study were to determine the relationship between muscle mass, muscle strength, muscle quality, and fat mass with a composite measure of physical function in older adults, and to determine whether these relations differed by age and sex.
Participants consisted of 1280 adults aged ≥ 55 yr from the NHANES study. Reduced rank regression was used to identify patterns of muscle mass, muscle strength, muscle quality, and fat mass related to physical function.
A single relevant pattern emerged that included leg strength and fat mass as predictors of the 7 physical function variables. The leg strength loading was significantly greater than the fat mass loading in men and women aged 55-64 and ≥ 75, and differed between sexes.
Leg strength and fat mass best predict physical function in older adults and the relative importance varies according to age and sex.
本研究旨在确定老年人的肌肉量、肌肉力量、肌肉质量和脂肪量与身体功能综合指标之间的关系，并确定这些关系是否因年龄和性别而异。
参与者为来自 NHANES 研究的 1280 名年龄≥55 岁的成年人。使用降秩回归来确定与身体功能相关的肌肉量、肌肉力量、肌肉质量和脂肪量模式。
出现了一种单一的相关模式，该模式包括腿部力量和脂肪量作为 7 项身体功能变量的预测指标。在 55-64 岁和≥75 岁的男性和女性中，腿部力量的负荷明显大于脂肪量的负荷，且在性别之间存在差异。
腿部力量和脂肪量是预测老年人身体功能的最佳指标，其相对重要性因年龄和性别而异。
