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一、选择以“呼吸方法”作为耐久跑教学有效性的着眼点在进行耐久跑教学时学生往往会出现呼吸困难、呼吸节奏紊乱、频率剧增、深度减小的现象。造成的这种现象的根本原因是,我们人体肺部的气体交换受到呼吸频率(次数)、呼吸深度(潮气量)与死腔大小的影响。所谓死腔代表人体口、鼻、咽喉、气管与支气管等气体通路(约150ml),当吸入的空气通过这些空间时,会保留下死腔大小的空气量,不会进入肺部进行气体交换,因此,增加呼吸的深度(每次吸入的空气量),可以显著降低死腔的影响,达成增加肺部气体交换量的目的。同时对于呼吸循环系统而言,不管是肺部的气体交换、心跳率、心脏每跳输出
First, the choice to “breathing method ” as the focus of durability and effective teaching effectiveness In the long-running teaching students often have difficulty breathing, breathing rhythm disorder, the frequency of sharp increase in the depth of the phenomenon of reduced. The root cause of this phenomenon is that the gas exchange in our human lungs is affected by the frequency of breathing (times), the depth of breathing (tidal volume), and the size of the dead space. The so-called dead space on behalf of the human mouth, nose, throat, trachea and bronchial and other gas access (about 150ml), when inhaled air through these spaces, will retain the size of the dead space the amount of air will not enter the lungs for gas exchange, Therefore, increasing the depth of breathing (the amount of air inhaled each time) can significantly reduce the effects of dead space and achieve the purpose of increasing the volume of lung gas exchange. At the same time for the respiratory system, whether it is the lungs of gas exchange, heart rate, cardiac output per jump