Strømme S B, Ingjer F
Aviat Space Environ Med. 1978 Nov;49(11):1267-70.
It has previously been suggested that diving bradycardia might be more pronounced in physically trained subjects than in unconditioned ones. Therefore, the cardiac responses to apneic face immersion in water of 25 +/- 1 degree C during rest and exercise in 24 males and females, ranging in age from 21-37 years, were compared to the subjects' levels of physical fitness, as estimated by maximal aerobic power. These values ranged from 46-74 ml.kg-1.min-1. The diving bradycardia was greatly intensified when the face immersion was superimposed on a state of apneic exercise. However, a correlation of the individuals' maximal aerobic power and the mean degree of bradycardia displayed during various maneuvers of apneic face immersion did not approach statistical significance. It is concluded that there exists no relationship between bradycardia and physical fitness, as judged from maximal aerobic power.
此前有人提出，与未经训练的人相比，受过体育训练的人潜水时的心动过缓可能更为明显。因此，对24名年龄在21至37岁之间的男性和女性在休息和运动期间将面部浸入25±1摄氏度的水中且屏气时的心脏反应，与通过最大有氧能力估算出的受试者体能水平进行了比较。这些数值范围为46至74毫升·千克⁻¹·分钟⁻¹。当面部浸入叠加在屏气运动状态时，潜水心动过缓会大大加剧。然而，个体的最大有氧能力与屏气面部浸入的各种动作过程中所表现出的心动过缓平均程度之间的相关性未达到统计学显著性。结论是，从最大有氧能力判断，心动过缓和体能之间不存在关联。
