Kinetics of anaerobic metabolism in human skeletal muscle: influence of repetitive high-intensity exercise on sedentary dominant and non-dominant forearm. A 31P NMR study.
Biochimie
; 85(9): 885-90, 2003 Sep.
Article
em En
| MEDLINE
| ID: mdl-14652177
ABSTRACT
Potential differences were assessed between the dominant (D) and non-dominant (ND) forearms of sedentary subjects during anaerobic exercise. Subjects performed voluntary concentric contractions of D and ND forearm muscle during a series of three high-intensity (60% of the maximal voluntary contraction force (MVC)) exercise bouts. The time-dependent changes in intracellular pH (pH(i)), Pi, and PCr concentrations, and their relation to muscular work were examined using 31P magnetic resonance spectroscopy (MRS) techniques, and revealed that D forearm metabolic kinetics in sedentary individuals are improved during repetitive high-intensity exercise compared to their respective ND forearm muscle. We postulate that the more regular and preferential utilization of the D limb leads to a "trained-like" condition.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
/
Limiar Anaeróbio
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Exercício Físico
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Músculo Esquelético
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Metabolismo Energético
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Antebraço
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Contração Muscular
Limite:
Adult
/
Humans
/
Male
Idioma:
En
Ano de publicação:
2003
Tipo de documento:
Article