The effects of whole body cryotherapy (WBC) on measures of respiratory function, and their interaction with sex and anthropometry, are unknown. This study investigated ventilatory responses after WBC and examined the role of sex and anthropometric characteristics in 22 recreationally active male and female participants. Thermal sensation [TS], heart rate, blood pressure and ventilatory measures (expired volume [V˙E], oxygen consumption [V˙O2], respiratory exchange ratio and metabolic equivalents of task [METS]) were evaluated pre- and post-WBC, compared to a control condition. V˙E increased by 10.8 L.min-1 following WBC compared to 0.1 L.min-1 in the control session (p=.001). V˙O2 increased by 0.4 L.min-1 following WBC compared to 0.0 L.min-1 in the control session (p<.001). METS increased by 1.0 following WBC compared to 0.1 in the control session (p<.001). TS decreased by 2 following WBC compared to 0 in the control session (p<.001), with females' TS decreasing significantly more than males following WBC (p=.001). Following a WBC exposure, highly significant strong negative relationships were observed between fat mass index and ΔV˙O2 (p=.002, r=-.718), body fat percentage and ΔV˙O2 (p=.003, r=-.700), fat mass index and ΔMETS (p=.001, r=-.729), body fat percentage and ΔMETS (p=.004, r=-.676). Furthermore, strong, statistically significant positive correlations were observed following a WBC exposure between BSA to mass ratio and TS (p=.005, r=-.669), TS and BSA (p<0.001, r=.776) and fat free mass index and TS (p=.001, r=.745). A short exposure to WBC elicits a ventilatory response via increased V˙O2, V˙E and METS. The largest increases occur within the first minute post-exposure, but return to near resting levels 1 min post-WBC. Increases in V˙O2, V˙E and METS observed post-WBC are likely due to an acute transient shivering response due to cold air exposure.

中文翻译：

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对全身冷冻疗法的通气反应

全身冷冻疗法 (WBC) 对呼吸功能测量的影响及其与性别和人体测量学的相互作用尚不清楚。本研究调查了 WBC 后的通气反应，并检查了 22 名从事娱乐活动的男性和女性参与者的性别和人体测量学特征的作用。热感觉 [TS]、心率、血压和通气措施（呼气量 [V˙E]、耗氧量 [V˙O2]、呼吸交换率和任务的代谢当量 [METS]）在WBC，与对照条件相比。与对照组中的 0.1 L.min-1 相比，在 WBC 后 V˙E 增加了 10.8 L.min-1 (p=.001)。与对照组的 0.0 L.min-1 相比，WBC 后 V˙O2 增加了 0.4 L.min-1 (p<.001)。与 0 相比，WBC 后 METS 增加了 1.0。在控制会话中为 1 (p<.001)。与对照组中的 0 相比，WBC 后 TS 下降 2 (p<.001)，WBC 后女性的 TS 下降明显多于男性 (p=.001)。在 WBC 暴露后，观察到脂肪质量指数与 ΔV˙O2 (p=.002, r=-.718)、体脂百分比和 ΔV˙O2 (p=.003, r=-) 之间存在非常显着的强负相关关系。 700)、脂肪质量指数和 ΔMETS (p=.001, r=-.729)、体脂百分比和 ΔMETS (p=.004, r=-.676)。此外，在 BSA 与质量比和 TS（p=.005，r=-.669）、TS 和 BSA（p<0.001，r=.776）和无脂肪之间的 WBC 暴露后，观察到强烈的、统计学上显着的正相关性质量指数和 TS（p=.001，r=.745）。短时间接触 WBC 会通过增加的 V˙O2、V˙E 和 METS 引起通气反应。最大的增加发生在暴露后的第一分钟内，但在 WBC 后 1 分钟恢复到接近静止水平。在 WBC 后观察到的 V˙O2、V˙E 和 METS 增加可能是由于暴露于冷空气导致的急性瞬态颤抖反应。