最近，屏息潜水已经成为一种竞技运动。
More recently, breath-hold diving has become a competitive sport.
屏息潜水经常发生缺氧，血压升高，减慢心率，以及其他生理功能的改变。
Breath-hold diving often leads to hypoxia, elevated blood pressure, slowed heartbeat and other physiological changes.
在瑞典Lund大学研究潜水者屏息效应的生理学家JohanAndersson可不这样认为。
Not at all, says physiologist Johan Andersson at Lund University in Sweden, who studies the effects of breath-holding in divers.
大多数人会在一分多钟没有空气的环境中觉得恐慌，但是自由潜水员可以在不呼吸氧气的情况下，在水下屏息更长的时间。
Mostpeople panic after a little more than a minute without air, but freedivers—divers who don't use oxygen—can hold their breath for muchlonger.
在达到人类屏息极限之前，出色的潜水者有望达到15分钟。
Elite breath-hold divers expect the limit to be extended to about 15 minutes before record-setting will level off.
虽然没有水的情况下研究，但是模拟了潜水员面朝下屏息的静息呼吸暂停潜水的条件。
The conditions were dry, but mimicked a static apnea dive in which the divers float face down holding their breath.
在国际竞争中的潜水员一般屏息4到7分钟。
Divers at international competitions routinely hold their breath 4-7 minutes.
在国际竞争中的潜水员一般屏息4到7分钟。
Divers at international competitions routinely hold their breath 4-7 minutes.
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