运动过程中非运动肌肉组织氧指数的振荡。

T. Yano, R. Afroundeh, K. Shirakawa, Lian Cs, K. Shibata, Z. Xiao, T. Yunoki
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引用次数: 3

摘要

本研究旨在探讨高强度和低强度运动对非运动运动中组织氧指数(TOI)振荡的影响。分别以30%和70%峰值摄氧量(Vo(2)峰值)为运动强度,持续12 min, 70%峰值运动强度为30 s。采用近红外光谱法测定非运动肌肉(肱二头肌)在运动12 min时的TOI。采用快速傅里叶变换(FFT)对运动过程中非运动肌肉的TOI进行分析,得到功率谱密度(PSD)。70% vo2峰运动12 min(0.00477±0.00172 Hz)时最大PSD出现频率(Fmax)显著低于30% vo2峰运动12 min(0.00781±0.00338 Hz)时最大PSD出现频率(Fmax)。Vo(2)峰值达到70%的运动与Vo(2)峰值达到30%的运动在血pH值和血乳酸水平上存在显著差异。由此得出结论,在低强度运动和高强度运动期间,非运动肌肉的TOI振荡,两种运动之间Fmax的差异与运动引起的血乳酸增加的差异有关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Oscillation of tissue oxygen index in non-exercising muscle during exercise.
The purpose of the present study was to examine how oscillation of tissue oxygen index (TOI) in non-exercising exercise is affected during high-intensity and low-intensity exercises. Three exercises were performed with exercise intensities of 30% and 70% peak oxygen uptake (Vo(2)peak) for 12 min and with exercise intensity of 70% Vo(2)peak for 30 s. TOI in non-exercising muscle (biceps brachii) during the exercises for 12 min was determined by nearinfrared spectroscopy. TOI in the non-exercising muscle during the exercises was analyzed by fast Fourier transform (FFT) to obtain power spectra density (PSD). The frequency at which maximal PSD appeared (Fmax) during the exercise with 70% Vo(2)peak for 12 min (0.00477 ± 0.00172 Hz) was significantly lower than that during the exercise with 30% Vo2peak for 12 min (0.00781 ± 0.00338 Hz). There were significant differences in blood pH and blood lactate between the exercise with 70% Vo(2)peak and the exercise with 30% Vo(2)peak. It is concluded that TOI in nonexercising muscle oscillates during low-intensity exercise as well as during high-intensity exercise and that the difference in Fmax between the two exercises is associated with the difference in increase in blood lactate derived from the exercise.
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来源期刊
Acta physiologica Hungarica
Acta physiologica Hungarica 医学-生理学
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