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Diabetologia

, Volume 16, Issue 3, pp 179–184 | Cite as

Effect of physical training on glucose tolerance and on glucose metabolism of skeletal muscle in anaesthetized normal rats

  • M. Berger
  • F. W. Kemmer
  • K. Becker
  • L. Herberg
  • M. Schwenen
  • A. Gjinavci
  • P. Berchtold
Originals

Summary

The effect of physical training on glucose tolerance in vivo and skeletal muscle glucose metabolism in vitro was investigated in normal rats. Treadmill running for 10 days up to 240 min/day led to a decrease of basal and glucose-stimulated plasma insulin levels without major alterations of the IV glucose tolerance (1 g/kg body weight). Swim training of two weeks' duration, i. e. exercise up to 2×75 min/ day, which did not induce significant changes in body composition, skeletal muscle glycogen levels or citrate synthase activity, resulted in a significant improvement of IV glucose tolerance and substantial reductions of basal and glucose-stimulated plasma insulin levels. Associated with this apparent improvement of insulin sensitivity in vivo, significant increases of the insulin-stimulated glucose uptake (+ 55%) and lactate oxidation (+ 78%) in vitro were found on perfusion of the isolated hindquarter of swim-trained animals. It is suggested that mild physical training can improve glucose tolerance and insulin sensitivity in normal rats, at least in part, due to an increase of insulin sensitivity of skeletal muscle glucose metabolism.

Key words

Physical training glucose tolerance skeletal muscle glucose metabolism insulin sensitivity 

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Copyright information

© Springer-Verlag 1979

Authors and Affiliations

  • M. Berger
    • 1
    • 2
    • 3
  • F. W. Kemmer
    • 1
    • 2
  • K. Becker
    • 1
    • 2
  • L. Herberg
    • 1
    • 2
  • M. Schwenen
    • 1
    • 2
  • A. Gjinavci
    • 1
    • 2
  • P. Berchtold
    • 1
    • 2
  1. 1.Diabetes Research Institute, Institute of Physiological Chemistry, Department of MedicineUniversity of DüsseldorfFRG
  2. 2.Institut de Biochemie CliniqueUniversity of GenevaSwitzerland
  3. 3.Medizinische Universitätsklinik EDüsseldorfGermany

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