Effects of the mask and mouthpiece plus noseclip on spontaneous breathing pattern.
D000328:Adult; D000368:Aged; D003201:Computers; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012119:Respiration; D012129:Respiratory Function Tests / Q000295:instrumentation*; D013147:Spirometry / Q000295:instrumentation