简述缩唇腹式呼吸的训练方法。
(1)开始训练时以半卧位,膝屈曲最适宜,立位时靠墙,上半身略向前倾,使腹肌放松;(2)呼气时缩拢嘴唇,同时腹肌收缩,腹壁下陷,使肺内气体经口徐徐呼出,经鼻吸气;(3)吸气时腹肌放松,尽量使腹部鼓起;(4)呼与吸时间比例为2:1;(5)每分钟呼吸10次左右,每次训练时间10~15分钟,每日2~3次。
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