Honda Y, Hayashi F, Yoshida A, Masuda Y, Sasaki K
Jpn J Physiol. 1981;31(2):181-6. doi: 10.2170/jjphysiol.31.181.
Relative contributions of chemical and non-chemical respiratory stimulations to breath-holding time (BHT) were examined in assisted (Funado) and unassisted (Kachido) breath-hold divers (Ama). In the Funado the magnitude of the chemical contribution was reduced, though statistically not significantly. On the other hand, in the Kachido no difference in chemical contribution was seen from the control. This was considered to be due to the fact that ventilatory response to CO2 was reduced in the Funado, but not in the Kachido. Despite the decreased contribution of CO2 drive to BHT, absolute BHT in the Funado was no prolonged. This may be related to sensitization of the respiratory centers to non-chemical stimulation. Such adaptation would be effective for preventing the danger of losing consciousness in the Funado who face extreme hypoxia on returning to the surface from a dive.
在辅助（舟渡）和非辅助（风戸）屏气潜水者（阿波舞潜水者）中，研究了化学和非化学呼吸刺激对屏气时间（BHT）的相对贡献。在舟渡中，化学贡献的幅度有所降低，尽管在统计学上不显著。另一方面，在风戸中，化学贡献与对照组相比没有差异。这被认为是由于舟渡对二氧化碳的通气反应降低，而风戸没有。尽管二氧化碳驱动对BHT的贡献降低，但舟渡的绝对BHT并未延长。这可能与呼吸中枢对非化学刺激的敏感性增加有关。这种适应性对于防止舟渡潜水者从潜水返回水面时面临极端缺氧而失去意识的危险可能是有效的。
