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儿童运动代谢的研究曾受限于无法进行体内肌肉测试。按照常规,这些研究仅限于通过观察最大或稳态运动状态下血液和呼吸气体及休息或运动后的少量肌肉活检分析来估算肌肉代谢。本文探讨了31P-磁共振波谱和每拍呼吸摄氧动力学研究的应用如何影响我们当前对成长期和成熟期运动代谢的认识。虽然对儿童用31P-磁共振波谱和摄氧动力学方法的研究数量很少,有些数据还相互矛盾,但根据这些研究可以得出结论:与成人相比,儿童通过增强细胞内耗氧量对运动做出反应,其反应与Ⅰ类肌肉纤维大幅度补充相一致。肌肉代谢变化与年龄成熟度、性别和运动强度相关。引进诸如“前期准备活动”和“工作一工作”等过渡实验模型,可为成长期和成熟期运动代谢的机制研究提供更佳途径。
Research on motor metabolism in children has been limited to inability to perform in-body muscle tests. By convention, these studies are limited to estimating muscle metabolism by observing blood and respiratory gases at maximal or steady-state motion and small muscle biopsies after rest or exercise. This article explores how the application of the 31 P-MR spectroscopy and the breath oxygenation kinetics study affects our current understanding of motor metabolism in both growing and maturing phases. Although data on the 31P-magnetic resonance spectroscopy and oxygen uptake kinetics are rare in children and some of them contradict each other, based on these studies it can be concluded that children are more likely to be affected by increased intracellular oxygen consumption than adults Responding, the reaction is consistent with a significant increase in Class I muscle fibers. Muscle metabolism changes with age maturity, gender and exercise intensity. The introduction of transitional experimental models such as “preparatory activities” and “work-and-work” can provide a better way to study the mechanisms of motor metabolism in the growing and maturing phases.