Department of Health Sciences and the Amsterdam Public Health Research Institute, Faculty of Science, Vrije Universiteit Amsterdam, the Netherlands.
Department of Human Movement Sciences, @AgeAmsterdam, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, the Netherlands.
J Gerontol A Biol Sci Med Sci. 2020 Sep 25;75(10):1951-1959. doi: 10.1093/gerona/glaa045.
Physical performance is an important factor for successful aging. This study aimed to identify distinct trajectories of multiple physical performance measures over 9 years in individuals aged 60-70 years and to evaluate their characteristics and the overlap between measures.
Four physical performance measures were assessed in 440 participants of the Longitudinal Aging Study Amsterdam: tandem stand, gait speed, chair stand, and handgrip strength. Gender-specific latent class models were conducted to obtain distinct trajectories and their degree of overlap.
Mean age at baseline was 67.9 (SD 1.7) years for males and 68.0 (SD 1.7) years for females. The optimal number of trajectories differed across measures. For tandem stand, no distinct trajectories were found (all 179 males, 198 females). For gait speed, three trajectories were identified, dependent on baseline speed: high-stable (47 males, 27 females), intermediate-stable (132 males, 130 females), and low-declining performance (6 males, 48 females). Two trajectories were identified for the chair stand: a stable (168 males, 150 females) and declining trajectory (10 males, 38 females). For handgrip strength, three declining trajectories were identified differing in baseline performance: high (55 males, 75 females), intermediate (111 males, 118 females), and low (17 males, 10 females). Overall, 11.9% of males and 5.7% of females were classified in similar trajectories across measures.
Trajectories of physical performance were heterogeneous, but showed similar patterns for males and females. Little overlap between measures was shown, suggesting different mechanisms for decline. This study emphasizes the use of multiple domains to assess physical performance.
身体表现是成功老龄化的一个重要因素。本研究旨在确定 60-70 岁个体 9 年内多项身体表现测量的不同轨迹，并评估其特征和测量之间的重叠。
在阿姆斯特丹纵向老龄化研究的 440 名参与者中评估了四项身体表现测量：并足站立、步速、椅子站立和握力。进行了性别特异性潜在类别模型，以获得不同的轨迹及其重叠程度。
男性的基线平均年龄为 67.9（SD 1.7）岁，女性为 68.0（SD 1.7）岁。不同测量方法的最佳轨迹数量不同。对于并足站立，没有发现明显的轨迹（所有 179 名男性，198 名女性）。对于步速，根据基线速度确定了三个轨迹：高稳定（47 名男性，27 名女性）、中稳定（132 名男性，130 名女性）和低下降表现（6 名男性，48 名女性）。椅子站立确定了两个轨迹：稳定（168 名男性，150 名女性）和下降轨迹（10 名男性，38 名女性）。对于握力，确定了三个下降轨迹，基线表现不同：高（55 名男性，75 名女性）、中（111 名男性，118 名女性）和低（17 名男性，10 名女性）。总体而言，11.9%的男性和 5.7%的女性在不同测量方法中被分类为相似轨迹。
身体表现的轨迹是异质的，但男性和女性表现出相似的模式。测量之间的重叠很小，表明下降的机制不同。本研究强调使用多个领域来评估身体表现。
