Predictors of Usual and Peak Gait Speed in Community-Dwelling Older Adults With Mild-to-Moderate Alzheimer's Dementia.

IF 1.4 4区医学 Q4 GERIATRICS & GERONTOLOGY

Journal of Aging and Physical Activity Pub Date : 2023-06-01 Print Date: 2023-12-01 DOI:10.1123/japa.2022-0313

Dereck L Salisbury, Molly Maxfield, Rodney P Joseph, David Coon, Jinjiao Wang, Junxin Li, Fang Yu

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Abstract

Gait speed significantly affects functional status and health outcomes in older adults. This cross-sectional study evaluated cognitive and physical fitness contributors to usual and peak gait speed in persons with Alzheimer's dementia. Multiple hierarchal linear regression was used to obtain squared semipartial correlation coefficients (sr2) and effect sizes (Cohen's ƒ2). Participants (n = 90; 56% male) averaged 77.1 ± 6.6 years of age and 21.8 ± 3.4 on Mini-Mental State Examination. Demographic/clinical, physical fitness, and cognition variables explained 45% and 39% of variance in usual and peak gait speed, respectively. Muscle strength was the only significant contributor to both usual (sr2 = .175; Cohen's ƒ2 = 0.31; p < .001) and peak gait speed (sr2 = .11; Cohen's ƒ2 = 0.18; p < .001). Women who were "slow" walkers (usual gait speed <1.0 m/s) had significantly lower cardiorespiratory fitness and executive functioning compared with "fast" walkers. In conclusion, improving muscle strength may modify gait and downstream health outcomes in Alzheimer's dementia.

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轻度至中度阿尔茨海默氏痴呆症社区居住老年人通常和峰值步态速度的预测因素。

步态速度显著影响老年人的功能状态和健康结果。这项横断面研究评估了认知和身体健康对阿尔茨海默氏痴呆症患者正常和峰值步态速度的影响。使用多元层次线性回归获得平方半偏相关系数(sr2)和效应量(Cohen's ƒ2)。参与者(n = 90;(56%男性)平均年龄77.1±6.6岁，精神状态检查平均年龄21.8±3.4岁。人口统计学/临床、身体健康和认知变量分别解释了通常和峰值步态速度的45%和39%的差异。肌肉力量是唯一的显著贡献者(sr2 = 0.175;Cohen's ƒ2 = 0.31;P < .001)和峰值步速(sr2 = .11;Cohen's ƒ2 = 0.18;P < 0.001)。走路“慢”的女性(通常的步伐速度)

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来源期刊

Journal of Aging and Physical Activity 医学-老年医学

CiteScore

2.60

自引率

6.70%

发文量

105

审稿时长

>12 weeks

期刊介绍： The Journal of Aging and Physical Activity (JAPA) is a multidisciplinary journal that publishes peer-reviewed original research reports, scholarly reviews, and professional-application articles on the relationship between physical activity and the aging process. The journal encourages the submission of articles that can contribute to an understanding of (a) the impact of physical activity on physiological, psychological, and social aspects of older adults and (b) the effect of advancing age or the aging process on physical activity among older adults. In addition to publishing research reports and reviews, JAPA publishes articles that examine the development, implementation, and evaluation of physical activity programs among older adults. Articles from the biological, behavioral, and social sciences, as well as from fields such as medicine, clinical psychology, physical and recreational therapy, health, physical education, and recreation, are appropriate for the journal. Studies using animal models do not fit within our mission statement and should be submitted elsewhere.