31P-MRS of quadriceps reveals quantitative differences between sprinters and long-distance runners.
31P-MRS of quadriceps reveals quantitative differences between sprinters and long-distance runners.
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股四头肌的 31P-MRS 揭示了短跑运动员和长跑运动员之间的数量差异。
DOI：
10.1249/00005768-199304000-00010
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发表时间：
1993
影响因子：
4.1
通讯作者：
C. Arús
中科院分区：
文献类型：
--
作者：
G. Bernús;J. M. González de Suso;J. Alonso;P. Martin;J. Prat;C. Arús
磷-31核磁共振波谱（31 P-MRS）已被用来表征四头肌肌肉在休息时的光谱模式，久坐者（N = 10），短跑运动员（N = 12），长跑运动员（N = 10）。从所有光谱中获得细胞内pH（pHi）、磷酸肌酸（PCr）、无机磷酸盐（Pi）、磷酸二酯（PDE）、三磷酸腺苷（ATP）和总磷酸盐（Pt），定义为PCr、PDE、Pi和3倍β-ATP共振的面积之和。pHi和ATP/Pt比值在研究的三组人中是相同的。PCr/Pi和PCr/Pt比值显著低于长跑运动员，Pi/Pt比值显著高于短跑运动员和久坐者，而PDE/Pt比值则显著低于短跑运动员和长跑运动员。此外，短跑运动员和久坐者的PCr浓度显著高于长跑运动员，而Pi显著低于长跑运动员。本研究的结果可以用短跑和耐力运动员之间纤维类型组成的公认差异来解释。我们认为，31 P-MRS在休息时可以用来监测非侵入性的个人适应性反应的运动员肌纤维的代谢特征的训练。
Phosphorus-31 nuclear magnetic resonance spectroscopy (31P-MRS) has been used to characterize the spectral pattern of quadriceps muscle at rest for sedentaries (N = 10), sprinters (N = 12), and long-distance runners (N = 10). Intracellular pH (pHi), phosphocreatine (PCr), inorganic phosphate (Pi), phosphodiesters (PDE), adenosine triphosphate (ATP) and total phosphate (Pt), defined as the sum of the areas of PCr, PDE, Pi, and 3 times the beta-ATP resonances, were obtained from all spectra. The pHi and ATP/Pt ratio were the same in the three groups of people studied. The PCr/Pi and PCr/Pt ratios were significantly lower and the Pi/Pt ratio was significantly higher for long-distance runners than for sprinters and sedentaries, while the PDE/Pt ratio was significantly lower for sprinters than for sedentaries and long-distance runners. Furthermore, the PCr concentration for sprinters and sedentaries was significantly higher and the Pi was significantly lower than for long-distance runners. The results obtained in this study can be explained by the accepted differences in fiber type composition between sprint and endurance athletes. We suggest that 31P-MRS at rest could be used to monitor noninvasively the individual adaptive response to training in the metabolic characteristics of the athlete muscle fiber.