Feasibility and acceptability of using jumping mechanography to detect early components of sarcopenia in community-dwelling older women

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Abstract

OBJECTIVE: To determine the feasibility and acceptability of using peak power and force, measured by jumping mechanography (JM), to detect early age-related features of sarcopenia in older women.

METHODS: Community-dwelling women aged 71-87 years were recruited into this cross-sectional study. Physical function tests comprised the short physical performance battery (SPPB), grip strength and, if SPPB score≥6, JM. JM measured peak weight-adjusted power and force from two-footed jumps and one-legged hops respectively. Questionnaires assessed acceptability.

RESULTS: 463 women were recruited; 37(8%) with SPPB⟨6 were ineligible for JM. Of 426 remaining, 359(84%) were able to perform ≥1 valid two-footed jump, 300(70%) completed ≥1 valid one-legged hop. No adverse events occurred. Only 14% reported discomfort. Discomfort related to JM performance, with inverse associations with both power and force (p⟨0.01). Peak power and force respectively explained 8% and 10% of variance in SPPB score (13% combined); only peak power explained additional variance in grip strength (17%).

CONCLUSIONS: Peak power and force explained a significant, but limited, proportion of variance in SPPB and grip strength. JM represents a safe and acceptable clinical tool for evaluating lower-limb muscle power and force in older women, detecting distinct components of muscle function, and possibly sarcopenia, compared to those evaluated by more established measures.

Original languageEnglish
Pages (from-to)246-257
Number of pages12
JournalJournal of Musculoskeletal and Neuronal Interactions
Volume17
Issue number3
Publication statusPublished - 1 Sep 2017

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Structured keywords

  • Bristol Heart Institute

Keywords

  • Grip Strength
  • Short Physical Performance Battery
  • Gait Speed
  • Chair Rise
  • COSHIBA

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