呼吸肌具有相对不易疲劳性,但增龄、疾病、长期卧床等原因可引起呼吸肌疲软、呼吸肌收缩力和耐力下降。这是呼吸衰竭的重要因素。正常人在重体力负荷或剧烈运动时,对呼吸肌的收缩力和耐力有更高的要求。在这两种情况下,都有必要进行呼吸肌锻 Respiratory muscles with relatively non-fatigue, but aging, disease, bedridden and other reasons can cause respiratory muscle weakness, respiratory muscle contractility and endurance decline. This is an important factor in respiratory failure. Normal people in the heavy physical load or strenuous exercise, the contractility and endurance of respiratory muscles have higher requirements. In both cases, it is necessary to perform respiratory muscle forging