Associations of sit-up ability with sarcopenia classification measures in Japanese older women

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  • Takashi Abe
    Department of Sports and Life Sciences, National Institute of Fitness and Sports in Kanoya, Kagoshima, Japan
  • Yu Yaginuma
    Department of Sports and Life Sciences, National Institute of Fitness and Sports in Kanoya, Kagoshima, Japan
  • Eiji Fujita
    Department of Sports and Life Sciences, National Institute of Fitness and Sports in Kanoya, Kagoshima, Japan
  • Robert S. Thiebaud
    Department of Kinesiology, Texas Wesleyan University, Fort Worth, TX, USA
  • Masashi Kawanishi
    Department of Sports and Life Sciences, National Institute of Fitness and Sports in Kanoya, Kagoshima, Japan
  • Takuya Akamine
    Department of Sports and Life Sciences, National Institute of Fitness and Sports in Kanoya, Kagoshima, Japan

説明

<jats:p>To test the hypothesis that sit-up performance is associated with sarcopenia classification measures, 93 older women aged 53–78 years were divided into three groups based on achieved repetitions (30 s) for the sit-up performance test: Group 0 (G 0, <jats:italic>n</jats:italic> = 33) performed 0 repetitions, Group 1–9 (G 1–9, <jats:italic>n</jats:italic> = 30) performed between 1 and 9 repetitions, and Group 10+ (G 10+, <jats:italic>n</jats:italic> = 30) performed over 10 repetitions. Dual-energy X-ray absorptiometry-derived appendicular lean soft tissue mass (aLM), handgrip strength (HGS), usual walking speed, and chair stand were measured, and low muscle mass (aLM index) and poor physical function were defined according to previous studies. Age and body mass index were similar among the three groups. HGS was higher in G 10+ compared with G 0. The prevalence rate of low muscle mass was 30% for G 0, 20% for G 1–9, and 3% for G 10+. Low HGS was observed in both G 0 (24%) and G 1–9 (20%), but not in G 10+. Only two persons in G 0 were classified as slow walking speed. Our results suggest that sit-up performance may be a useful indicator to determine the extent of sarcopenia because low muscle mass and poor function were almost non-existent in individuals who could perform over 10 sit-ups.</jats:p>

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