Predictors of change in walking velocity in older adults

被引:47
作者
Gibbs, J
Hughes, S
Dunlop, D
Singer, R
Chang, RW
机构
[1] NORTHWESTERN UNIV,MULTIPURPOSE ARTHRITIS & MUSCULOSKELETAL DIS CTR,EVANSTON,IL 60208
[2] EDWARD HINES VET ADM MED CTR,CTR COOPERAT STUDIES HLTH SERV,HINES,IL 60141
[3] NORTHWESTERN UNIV,SCH MED,DEPT MED,DIV ARTHRITIS CONNECT TISSUE DIS,CHICAGO,IL
关键词
D O I
10.1111/j.1532-5415.1996.tb02427.x
中图分类号
R592 [老年病学]; C [社会科学总论];
学科分类号
03 ; 0303 ; 100203 ;
摘要
OBJECTIVE: To determine factors that predict change in walking velocity in older people using a multivariate model. DESIGN: Longitudinal observational study. SUBJECTS: A total of 588 persons older than age 60, including subjects residing in a continuing care retirement community (CCRC) (n = 248), and homebound (n = 79) and ambulatory (n = 261) subjects. Mean age at baseline = 77. MEASUREMENT: Independent variables included demographics, physician measures of lower-extremity joint impairment and other musculoskeletal and neurological variables, comorbidities derived from physical examination and chart abstract, self-assessed arthritis pain, depression, and anxiety. The major dependent variables were 2- and 4-year decline in walking velocity below a threshold associated with nursing home placement. MAIN RESULTS: From baseline to Year 4, median walking velocity declined from 61.8 to 53.0 m/min, and the proportion oi subjects above a threshold value of 11.5 m/min declined from 95.3% to 80.4%. Age, joint impairment, and weakness of quadriceps, measured at baseline, predicted 2-year and 4-year decline in walking velocity. CONCLUSIONS: The findings indicate that joint impairment and quadriceps strength contribute significantly to crossing a clinically significant threshold in walking velocity among older people over time. Future research is needed to determine whether these risk factors can be modified through preventive interventions such as muscle-strengthening exercises and pain medication.
引用
收藏
页码:126 / 132
页数:7
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