Effect of a simulated saturation dive to 31 ATA on pulmonary function.

概要

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The purpose of this report is to investigate the changes in pulmonary functions in Japanese divers during a simulated heliox dive to successive depths of 250 and 300m (26 and 31 ATA). Pulmonary measurements of vital capacity (VC) and its components, forced expiratory volume in I sec (FEV 1.0), and maximal voluntary volume (MVV) were made during the dive. Compared to pre-dive, there were significant increases in tidal volume and expiratory reserve volume at depths, and VC at 31 ATA and post-dive; inspiratory reserve volume decreased significantly at depths in contrast to increased expiratory reserve volume. These results mean an alteration in the pattern of breathing during the dive. The striking effects were found on FEV 1.0 and MVV which decreased linearly with increasing inspired gas density.
日本生理人類学会の論文