IDENTIFICATION OF DYNAPENIA IN OLDER ADULTS THROUGH THE USE OF GRIP STRENGTHT-SCORES

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Abstract

Introduction:

The aim of this study was to generate reference values and t-scores (1.0–2.5 standard deviations below average) for grip strength for healthy young adults and to examine the utility of t-scores from this group for the identification of dynapenia in older adults. Methods: Our investigation was a population-based, general community secondary analysis of cross-sectional grip strength data utilizing the NIH Toolbox Assessment norming sample. Participants consisted of community-dwelling adults, with age ranges of 20–40 years (n = 558) and 60–85 years (n = 390). The main outcome measure was grip strength using a Jamar plus dynamometer. Results: Maximum grip strengths were consistent over the 20–40-year age group [men 108.0 (SD 22.6) pounds, women 65.8 (SD 14.6) pounds]. Comparison of older group grip strengths to those of the younger reference group revealed (depending on age strata) that 46.2–87.1% of older men and 50.0–82.4% of older women could be designated as dynapenic on the basis of t-scores. Conclusions: The use of reference value t-scores from younger adults is a promising method for determining dynapenia in older adults. Muscle Nerve51: 102–105, 2015

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