Defining an international cut-off of two-legged countermovement jump power for sarcopenia and dysmobility syndrome
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ORIGINAL ARTICLE
Defining an international cut-off of two-legged countermovement jump power for sarcopenia and dysmobility syndrome N. Hong 1 & E. Siglinsky 2,3 & D. Krueger 2 & R. White 2 & C. O. Kim 4 & H. C. Kim 5 & Y. Yeom 6 & N. Binkley 2 & Y. Rhee 1 & B. Buehring 2,7 Received: 10 March 2020 / Accepted: 10 July 2020 # The Author(s) 2020
Abstract Summary We aimed to establish jump power cut-offs for the composite outcome of either sarcopenia (EWGSOP2) or dysmobility syndrome using Asian and Caucasian cohorts. Estimated cut-offs were sex specific (women: < 19.0 W/kg; men: < 23.8 W/kg) but not ethnicity specific. Jump power has potential to be used in definitions of poor musculoskeletal health. Purpose Weight-corrected jump power measured during a countermovement jump may be a useful tool to identify individuals with poor musculoskeletal health, but no cut-off values exist. We aimed to establish jump power cut-offs for detecting individuals with either sarcopenia or dysmobility syndrome. Methods Age- and sex-matched community-dwelling older adults from two cohorts (University of Wisconsin-Madison [UW], Korean Urban Rural Elderly cohort [KURE], 1:2) were analyzed. Jump power cut-offs for the composite outcome of either sarcopenia defined by EWGSOP2 or dysmobility syndrome were determined. Results The UW (n = 95) and KURE (n = 190) cohorts were similar in age (mean 75 years) and sex distribution (68% women). Jump power was similar between KURE and UW women (19.7 vs. 18.6 W/kg, p = 0.096) and slightly higher in KURE than UW in men (26.9 vs. 24.8 W/kg, p = 0.050). In UW and KURE, the prevalence of sarcopenia (7.4% in both), dysmobility syndrome (31.6% and 27.9%), or composite of either sarcopenia or dysmobility syndrome (32.6% and 28.4%) were comparable. Low jump power cut-offs for the composite outcome differed by sex but not by ethnicity (< 19.0 W/kg in women; < 23.8 W/kg in men). Low jump power was associated with elevated odds of sarcopenia (adjusted odds ratio [aOR] 4.07), dysmobility syndrome (aOR 4.32), or the composite of sarcopenia or dysmobility syndrome (aOR 4.67, p < 0.01 for all) independent of age, sex, height, and ethnicity. Conclusion Sex-specific jump power cut-offs were found to detect the presence of either sarcopenia or dysmobility syndrome in older adults independent of Asian or Caucasian ethnicity. Keywords Countermovement jump . Dysmobility syndrome . Jump power . Sarcopenia Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00198-020-05591-x) contains supplementary material, which is available to authorized users. * B. Buehring [email protected]
3
UT Southwestern Medical Center, University of Texas Southwestern, Dallas, TX, USA
* Y. Rhee [email protected]
4
Division of Geriatrics, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
5
Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea
6
Department of Sociology, Yonsei University College of
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