| Effects of intermittent high-intensity exercise and carbohydrate supplementation on IGF-1 and glycogen of Wistar rats. | |
| | |
MedLine Citation:
|
PMID: 18835207 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECTIVE: The aim of this study was to analyze the association between glucose infusion during intermittent physical exercise and its metabolic effects on rats. DESIGN: Forty male rats were divided into eight groups based on training (intermittent), exercise and carbohydrate intake (glucose 20%): TEC (trained exercised with carbohydrate), TES (trained exercised without carbohydrate), TNC (trained non-exercised with carbohydrate), TNS (trained non-exercised without carbohydrate), UEC (untrained exercised with carbohydrate), UES (untrained exercised without carbohydrate), UNC (untrained non-exercised with carbohydrate) and UNS (untrained non-exercised without carbohydrate). The training and/or exercise protocol consisted of the rats running on a treadmill for 1 min above the lactate threshold, or running below the lactate threshold for 30s, intermittently for 30 min. Blood was analyzed for glycemia, lactate and IGF-1. Muscle and liver glycogen were measured (T2). RESULTS: Glycemia was found to be different in T2 compared to T1 in the TEC, TNC, UEC and UNC groups. Lactate was higher in T2 than in T1, but remained within the lactate threshold. Glycogen showed higher concentrations in the trained groups and, whether trained or not, in the supplemented groups. IGF-1 levels were higher in exercised rats independent of supplementation or glycogen levels. Trained rats showed lower IGF-1 when exercising than did the untrained animals. CONCLUSIONS: We conclude that intermittent exercise is beneficial in preventing a trained lactate pool, and that, in association with glucose supplementation, intermittent exercise will be efficient both in preventing a trained lactate pool and in maintaining sufficient glycemia levels. Exercise raises IGF-1 levels, whereas training inverts this relationship. |
| | |
Authors:
|
Vivian Treichel Giesel; Mateus Reche; Lolita Schneider; Lucas Campos Araújo; Rosana Scalco; Helena von Eye Corleta; Edison Capp |
Related Documents
:
|
3122107 - Tricarboxylic acid cycle intermediates in chronic renal failure. 2132167 - Effect of swimming in thermal water on skeletal muscle, liver and heart glycogen. 11906327 - Effect of exercise on concentrations of free amino acids in pools of type i and type ii... 3733627 - Human muscle metabolism during sprint running. 656337 - Experimental asbestosis: an investigation of functional and pathological disturbances. ... 3409637 - Autonomic control of heart rate during dynamic exercise in human hyperthyroidism. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-10-02 |
Journal Detail:
|
Title: Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society Volume: 19 ISSN: 1532-2238 ISO Abbreviation: Growth Horm. IGF Res. Publication Date: 2009 Apr |
Date Detail:
|
Created Date: 2009-03-16 Completed Date: 2009-07-20 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9814320 Medline TA: Growth Horm IGF Res Country: Scotland |
Other Details:
|
Languages: eng Pagination: 156-61 Citation Subset: IM |
Affiliation:
|
Departamento de Fisiologia, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil. viviannho@yahoo.com.br |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Carbohydrate Metabolism Dietary Carbohydrates / administration & dosage* Glycogen / blood, metabolism* Insulin-Like Growth Factor I / metabolism* Lactic Acid / blood Liver Glycogen / metabolism Male Muscle, Skeletal / metabolism Physical Conditioning, Animal* Physical Exertion* Rats Rats, Wistar |
| Chemical | |
Reg. No./Substance:
|
0/Dietary Carbohydrates; 0/Liver Glycogen; 50-21-5/Lactic Acid; 67763-96-6/Insulin-Like Growth Factor I; 9005-79-2/Glycogen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Optimized angle selection for radial sampled NMR experiments.
Next Document: Hepatitis B and hepatitis C in Pakistan: prevalence and risk factors.