答当我们在各种剧烈运动之后,身体的骨胳肌会产生一种酸痛感,几天后酸痛便消失。我们知道,人必需不断从外界环境中摄取氧气,将体内有机物质分解为二氧化碳和水等彻底的氧化产物,释放大量的能量,供各项生理活动利用。在剧烈运动时,全身骨胳肌特别是下肢肌收缩活动加强,急需大量能量供给,这时呼吸频率、心率逐渐加快,血液循环加速,而且体内大部分血液被输送到运动系统,尽管如此,仍然不能满足体内糖类完全氧化所需的氧气 A When we are in a variety of strenuous exercise, the body’s skeletal muscle will produce a sore feeling, a few days after the soreness disappears. We know that people must constantly take in oxygen from the external environment and break down the organic matter in the body into complete oxidation products such as carbon dioxide and water and release a large amount of energy for use in various physiological activities. In strenuous exercise, systemic skeletal muscle, especially the contraction of lower extremity muscles, urgently need a lot of energy supply, then respiratory rate, heart rate gradually accelerated, accelerated blood circulation, and the body most of the blood is transported to the motor system, nevertheless, still Can not satisfy the oxygen required for the complete oxidation of the body’s sugars