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目前国内外阻力负荷法的呼吸肌锻练［１～３］，阻力为最大口腔压３０％～１００％不等；时间从２周～６月不等。本研究的主要目的在于：（１）寻找提高吸气肌、呼气肌强度和耐力的最佳阻力和时间；（２）寻找能同时提高吸气肌和呼气肌强度和耐力的最佳吸气阻力、呼气阻力、时
Respiratory muscle exercise at home and abroad resistance load exercise [1 ~ 3], the resistance is the maximum oral pressure 30% ~ 100%; time from 2 weeks to 6 months. The main purpose of this study is to: (1) look for the best resistance and time to increase the strength and stamina of the inspiratory and expiratory muscles; (2) look for the optimal absorption and strength of the inspiratory and expiratory muscles Air resistance, expiratory resistance, when