Comparison of Breathing Functions When Adopting 2 Different Excretion Postures

TASHIRO Daisuke, NAKAHARA Masami, KITAJIMA Eiji, KANEKO Hideo, HARAGUCHI Kenzo

doi:10.1589/rika.34.517

<p>[Purpose] To determine the most comfortable excretion posture by comparing breathing functions when adopting 2 different excretion postures. [Participants and Methods] The breathing functions, chest and waist circumferences, and subjective comfort of 30 healthy adults when sitting with their trunk upright and when sitting with it tilting forward as 2 different excretion postures were measured and compared. [Results] The inspiratory reserve and maximal inspiratory volumes were greater when sitting with the trunk upright. In contrast, the expiratory reserve volume was greater when sitting with the trunk tilting forward. Moreover, the chest circumference (axillary fossa/xiphoid process) was longer, and the rate of answering “comfortable” was higher when sitting with the trunk tilting forward than when sitting with it upright. [Conclusion] Although the lung capacity did not vary according to the excretion posture, there were differences in the expiratory and inspiratory volumes between the 2 postures. As sitting with the trunk tilting forward was suggested to be more comfortable than sitting with it upright, further studies may be needed to identify factors contributing to such comfort.</p>

Comparison of Breathing Functions When Adopting 2 Different Excretion Postures

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