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Combined effects of short-term calorie restriction and exercise on insulin action in normal rats.
MedLine Citation:
PMID:  20938891     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
The present study examined the effect of combination of short-term calorie restriction (CR) and moderate exercise on insulin action in normal rats. Rats were divided randomly into 4 groups: ad libitum, sedentary (A-Sed); calorie restriction, sedentary (CR-Sed); ad libitum, exercise (A-Ex); and calorie restriction, exercise (CR-Ex). Rats in the exercise groups were run on a rodent treadmill. Rats in the CR groups were fed every alternate day. Oral glucose tolerance test (OGTT) showed improvements in both CR-Sed and A-Ex groups compared with the A-Sed group; no further improvement in glucose tolerance was observed in the CR-Ex group. In contrast, glucose infusion rates (GIRs) determined by the hyperinsulinemic-euglycemic clamp method indicated that the GIR of the CR and exercise combination was significantly better than that of the sole intervention of CR or exercise. There was no difference in the levels of fasting glucose, insulin, or high-molecular weight forms of adiponectin among the 4 groups. Protein expression of GLUT-4 in the skeletal muscle increased by exercise, but not by CR. Our findings indicate that the combination of exercise and CR may be effective in enhancing insulin sensitivity at the skeletal muscle in normal subjects.
Authors:
H Y Jiang; T Koike; P Li; Z H Wang; Y Kawata; Y Oshida
Publication Detail:
Type:  Journal Article     Date:  2010-10-11
Journal Detail:
Title:  Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et métabolisme     Volume:  42     ISSN:  1439-4286     ISO Abbreviation:  Horm. Metab. Res.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-06     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0177722     Medline TA:  Horm Metab Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  950-4     Citation Subset:  IM    
Copyright Information:
© Georg Thieme Verlag KG Stuttgart · New York.
Affiliation:
Department of Sports Medicine, Graduate School of Medicine, Nagoya University, Nagoya, Japan.
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