Prediction models of sarcopenia in japanese adult men and women

Kiyoshi Sanada, Motohiko Miyachi, Kenta Yamamoto, Haruka Murakami, Michiya Tanimoto, Yumi Omori, Hlroshi Kawano, Yuko Gando, Satoshi Hanawa, Motoyuki Iemitsu, Izumi Tabata, Mitsuru Higuchi, Shigetoshi Okumura

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Abstract

The purpose of this study was to develop prediction models of sarcopenia in 1,894 Japanese men and women aged 18-85 years. Reference values for sarcopenia (skeletal muscle index, SMI; appendicular muscle mass/height , kg/m2) in each sex were defined as values two standard deviations (2SD) below the gender-specific means of this study reference data for young adults aged 18-40 years. Reference values for predisposition to sarcopenia (PSa) in each gender were also defined as values one standard deviations (1SD) below. The subjects aged 41 years or older were randomly separated into 2 groups, a model development group and a validation group. Appendicular muscle mass was measured by DXA. The reference values of sarcopenia were 6.87 kg/m2 and 5.46 kg/nf, and those of PSa were 7.77 kg/m2 and 6.12 kg/m8. The subjects with sarcopenia and PSa aged 41 years or older were 1.7% and 28.8% in men and 2.7% and 20.7% in women. The whole body bone mineral density of PSa was significantly lower than in normal subjects. The handgrip strength of PSa was significantly lower than in normal subjects. Stepwise regression analysis indicated that the body mass index (BMI), waist circumference and age were independently associated with SMI in men; and BMI, handgrip strength and waist circumference were independently associated with SMI in women. The SMI prediction equations were applied to the validation group, and strong correlations were also observed between the DXA-measured and predicted SMI in men and women. This study proposed the reference values of sarcopenia in Japanese men and women. The prediction models of SMI using anthropometric measurement are valid for alternative DXA-measured SMI in Japanese adults.

Original languageEnglish
Pages (from-to)291-302
Number of pages12
JournalJapanese Journal of Physical Fitness and Sports Medicine
Volume59
Issue number3
Publication statusPublished - 2010 Jun

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Keywords

  • Japanese
  • Prediction equation
  • Reference value
  • Sarcopenia

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Sanada, K., Miyachi, M., Yamamoto, K., Murakami, H., Tanimoto, M., Omori, Y., Kawano, H., Gando, Y., Hanawa, S., Iemitsu, M., Tabata, I., Higuchi, M., & Okumura, S. (2010). Prediction models of sarcopenia in japanese adult men and women. Japanese Journal of Physical Fitness and Sports Medicine, 59(3), 291-302.