Effects of daily physical activity on insulin action in the elderly

K. Yamanouchi, H. Nakajima, T. Shinozaki, K. Chikada, K. Kato, Y. Oshida, I. Osawa, J. Sato, Y. Sato*, Mitsuru Higuchi, S. Kobayashi

*この研究の対応する著者

研究成果: Article査読

33 被引用数 (Scopus)

抄録

The effects of daily physical activity on peripheral insulin action were investigated in aged individuals. Glucose infusion rates (GIR) during the euglycemic insulin clamp procedure in aged bedridden, aged controls, and aged athletes were compared with those in young controls and young athletes at insulin infusion rates of 40 and 400 mU · m-2 · min-1 to estimate insulin action at physiological and maximal insulin concentrations, respectively. At both insulin infusion rates, GIR was significantly higher in aged athletes and significantly lower in aged bedridden subjects than in aged controls. Although there was no statistical difference in GIR at 400 mU · m-2 · min-1 between young athletes and young controls, GIR at 40 mU · m-2 · min-1 was higher in young athletes than in young controls. Comparison of the aged and young groups showed that although GIR at 400 mU · m-2 · min-1 was significantly lower in aged controls than in young controls, there was no significant difference between the aged athletes and the young athletes. We conclude that insulin responsiveness (insulin action at the postreceptor binding site) may decrease with the aging process and may be further affected by physical inactivity. Although physical training may improve insulin responsiveness in aged individuals up to levels similar to those in young athletes, physical training in young individuals may improve only insulin sensitivity.

本文言語English
ページ(範囲)2241-2245
ページ数5
ジャーナルJournal of Applied Physiology
73
6
出版ステータスPublished - 1992
外部発表はい

ASJC Scopus subject areas

  • 内分泌学
  • 生理学
  • 整形外科およびスポーツ医学
  • 理学療法、スポーツ療法とリハビリテーション

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