A new muscle-training method, “hybrid training”, utilizing combined voluntary and electrical muscle contractions, is effective for increasing muscle mass and force on lower extremities in elderly people. Although skeletal muscle regulates glucose metabolism, partly by releasing
interleukin (IL)-6, the effects of hybrid training on glucose metabolism remains unclear. The aim of this study was to investigate the effects of hybrid training on glucose metabolism and serum IL-6 levels in elderly people. Hybrid training was performed on 7 elderly subjects. Both quadriceps
and hamstrings were contracted voluntarily or electrically at the same time for 19 min twice a week. The effects on glucose metabolism and serum IL-6 levels were evaluated after 12 weeks of hybrid training. All of the subjects completed the study, and no severe adverse events developed
during the study period. There were no significant differences in body mass index, serum insulin levels, homeostasis model assessment for insulin resistance values, or hemoglobin A1c values after hybrid training. However, fasting blood glucose levels were significantly decreased after hybrid
training (114 ± 13 vs. 103 ± 9 mg·dL–1; p = 0.0340). In addition, all 7 subjects showed a decrease in serum IL-6 levels after hybrid training, and this decrease was statistically significant (44.0 ± 35.6 vs. 14.6 ±
10.5 pg·mL–1; p = 0.0180). Furthermore, there was a significant correlation between changes in serum IL-6 levels and changes in fasting blood glucose levels (ρ = 0.883; p = 0.0306). In this study, we showed the safety and good adherence of hybrid training
for lower extremities in elderly people. Furthermore, hybrid training decreased fasting blood glucose and serum IL-6 levels in elderly people.
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métabolisme du glucose;
Document Type: Research Article
Department of Digestive Disease Information and Research, and Department of Medicine, Kurume University School of Medicine, Kurume 830-0011, Japan.
Division of Rehabilitation, Kurume University Hospital, Kurume 830-0011, Japan.
Department of Physical Therapy Faculty of Medical Technology, Teikyo University Fukuoka, Omuta 836-8505, Japan.
April 13, 2011
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