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Multivariate analysis of the effects of different ratios in matching inspiratory with expiratory resistance on respiratory pattern and subjective sense

Li Binglin, Feng Linhua

Department of Aviation Environmental Physiology, Fourth Military Medical College. Xian, Shaanxi, China

Abstract

The effects of different ratios of inspiratory resistance (IR) to expiratory resistance (ER) on respiratory pattern and subjective sense were observed in 19 healthy young men. The combined effects of IR and ER on respiration were “the sum” of those induced by IR and ER separately. No interaction between IR and ER was found. With gradual increase of the ratio of IX/ER, there were regular changes of the variables which symbolized the breathing pattern. The results indicate that the respiratory discomfort caused by added respiratory resistance was dependent on total resistance value (CR) and mouth pressure swing (P).

Key words: Added respiratory resistance;Combined resistance;Respiratory pattern;Respiratory discomfort;Multivariate analysis

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Citing This Article：

Li Binglin, Feng Linhua. Multivariate analysis of the effects of different ratios in matching inspiratory with expiratory resistance on respiratory pattern and subjective sense. Acta Physiol Sin 1985; 37 (1): (in Chinese with English abstract).