alexa Clinical assessment of hip strength using a hand-held dynamometer is reliable.


Journal of Gerontology & Geriatric Research

Author(s): Thorborg K, Petersen J, Magnusson SP, Hlmich P

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Abstract Hip strength assessment plays an important role in the clinical examination of the hip and groin region. The primary aim of this study was to examine the absolute test-retest measurement variation concerning standardized strength assessments of hip abduction (ABD), adduction (ADD), external rotation (ER), internal rotation (IR), flexion (FLEX) and extension (EXT) using a hand-held dynamometer. Nine subjects (five males, four females), physically active for at least 2.5 h a week, were included. Twelve standardized isometric strength tests were performed twice with a 1-week interval in between by the same examiner. The test order was randomized to avoid systematic bias. Measurement variation between sessions was 3-12\%. When the maximum value of four measurements was used, test-retest measurement variation was below 10\% in 11 of the 12 individual hip strength tests and below 5\% in five of the 12 tests. No systematic differences were present. Standardized strength assessment procedures of hip ABD, ER, IR, FLEX, with test-retest measurement variation below 5\%, hip ADD below 6\% and hip EXT below 8\%, make it possible to determine even small changes in hip strength at the individual level. This article was published in Scand J Med Sci Sports and referenced in Journal of Gerontology & Geriatric Research

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