MAXIMUM PRESSURE-VOLUME RELATIONSHIPS OF THE HUMAN RESPIRATORY SYSTEM.
SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX
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Maximum respiratory pressure-volume relationships were determined in five experienced male subjects by three methods 1 by exerting pressure against a mercury U-tube manometer 2 by exerting pressures against an occluded breathing tube with the subject sitting in a full-body plethysmograph and 3 by maximally exhaling into and inhaling from a series of different-sized containers. Greater expiratory and inspiratory pressures could be exerted against infinite resistance methods 1 and 2 than against variable resistance method 3. Author