Coetsee M F, Terblanche S E
Department of Physical Education, University of Port Elizabeth, South Africa.
Aviat Space Environ Med. 1988 Jun;59(6):540-3.
This investigation is concerned with the effect of breathholding during exercise on the partial pressure of blood gasses and the energy supply mechanisms of the human body. Subjects (n = 15) included males and females. They were subjected to intermittent exercise periods of 10 s with 10-s resting periods for a duration of 12 min. This protocol was selected to simulate an underwater hockey game during which in-practice intervals of submersion are alternated with intervals on the surface, each of a 10-s duration. Two tests per subject were executed, i.e. one while breathing normally and another where the active period was executed apneically. Statistically significant differences were observed in the PCO2 (breathhold higher than breathing normally; p less than 0.005) and pH (breathhold lower than breathing normally; p less than 0.01) of arterial capillary blood during the exercise period. The lactate concentration of arterial blood did not differ significantly (p greater than 0.05). The PO2 of the breathhold test was slightly lower than that of the control test.
本研究关注运动期间屏气对人体血液气体分压及能量供应机制的影响。受试者（n = 15）包括男性和女性。他们进行了时长为12分钟的间歇性运动，运动期为10秒，休息期为10秒。选择该方案是为了模拟水下曲棍球比赛，在此比赛中，实际潜水间隔与水面间隔交替进行，每个间隔时长均为10秒。对每位受试者进行了两项测试，即一项在正常呼吸时进行，另一项在运动期屏气时进行。在运动期间，动脉毛细血管血的PCO2（屏气时高于正常呼吸；p小于0.005）和pH（屏气时低于正常呼吸；p小于0.01）存在统计学显著差异。动脉血乳酸浓度无显著差异（p大于0.05）。屏气测试的PO2略低于对照测试。
