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中枢血液动力学因素以及外周系统(血管及组织代谢)限制着个体的最大摄氧量,然而,二者之间哪一因素更为重要仍不得而知。通过在仅有少数肌群参与的体育活动中测定其工作肌群的血流量和耗氧量,我们发现:人类骨骼肌的血流量至少为200ml/100g·min,而且在极限运动中,肌组织的耗氧量为300ml/100g·min。由此可见,在全身性的体育活动中心脏泵血的能力是限制最大摄氧量的主要因素,而不是肌组织。另外,我们还观察到:高灌注的肌组织,动静脉氧差较小(14—15容积%)。氧利用率较低与红细胞流过毛细血管的平均流过
Central hemodynamic factors and the peripheral system (vascular and tissue metabolism) limit the individual’s maximum oxygen uptake, however it is not yet known which of the two factors is more important. By measuring the blood flow and oxygen consumption of working muscles in sports activities involving only a few muscles, we found that the blood flow of human skeletal muscle is at least 200 ml / 100 g · min, and in extreme exercise, muscle tissue The oxygen consumption of 300ml / 100g · min. Thus, the ability of the heart to pump blood during generalized physical activity is a major factor limiting the maximum oxygen uptake, not muscle tissue. In addition, we also observed that in high perfusion muscle tissue, arteriovenous oxygen difference is small (14-15 vol%). Lower oxygen utilization and mean flow of red blood cells through the capillaries