期刊
ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION
卷 83, 期 6, 页码 811-815出版社
W B SAUNDERS CO
DOI: 10.1053/apmr.2002.32743
关键词
elderly; rehabilitation; reproducibility of results; strength
Objective: To determine the reliability of a standardized protocol by using a hand-held dynamometer (HHD) to measure lower-extremity strength in community-dwelling elderly fallers. Design: Within-session test-retest reliability of the HED. Setting: Balance laboratory of a university. Participants: A convenience sample of 41 community-dwelling elders (61-90y) who fell at least once in the previous year. Intervention: The strengths of 8 lower-extremity muscle groups bilaterally were tested twice, With an intervening rest period of 15 seconds. Main Outcome Measure: Maximal isometric force Results: Test-retest intraclass correlation coefficients (ICCs) were high, generally ranging from .95 to .99 for 1 trial (ICC2.1) and from .97 to 1.00 for the mean of 2 trials (ICC2.2). There were no significant differences in strength values across trials (P>.05). Men had significantly greater strength than Women across all muscle groups (P>.05). Right knee extensor strength demonstrated the largest trial-to-trial difference, .54kg using a single measurement and .39kg using the mean of both measurements. Among the 3 lower-extremity muscle groups, the ankle showed higher a coefficient of variation (CV=5.1%-7.4%) than the knee (CV = 4.6%-5.1%) or the hip (CV = 4.2%-6.3%) when using I measure. Conclusion: By using an HHD and a standardized measurement protocol, a novice tester can obtain reliable lower-extremity strength values in community-dwelling elderly fallers.
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