All performed five maximal duration static apneas with face immersion in cold water (ten degrees Celcius), each apnea separated by a two minute interval.

• 实验进行的方式是，请这些人将脸部浸埋在十度的冰水中，并且进行五次连续的极限静态闭气，每次闭气间格休息两分钟，最后抽血比较前后关连性。