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
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
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DOI：
10.1016/s0300-9084(03)00125-1
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发表时间：
2003-09-01
期刊：
影响因子：
3.9
通讯作者：
Briguet, A
中科院分区：
文献类型：
--
作者：
Brosseau, OEF;Mahdjoub, R;Briguet, A
在无氧运动过程中，评估了久坐受试者的优势（D）和非优势（ND）前臂之间的潜在差异。受试者在一系列的三个高强度（60%的最大随意收缩力（MVC））运动回合进行自愿的D和ND前臂肌肉的同心收缩。使用P-31磁共振波谱（MRS）技术检查了细胞内pH（pH（i））、P-i和PCr浓度的时间依赖性变化及其与肌肉工作的关系，结果表明，与各自的ND前臂肌肉相比，久坐个体的D前臂代谢动力学在重复高强度运动期间得到改善。我们假设，更经常和优先使用的D肢体导致一个“训练样”的条件。(C)2003年，Elsevier SAS科学与医学版。All rights reserved.
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)), P-i, and PCr concentrations, and their relation to muscular work were examined using P-31 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. (C) 2003 Editions scientifiques et medicales Elsevier SAS. All rights reserved.