Webb P, Hiestand M
J Appl Physiol. 1975 Feb;38(2):257-62. doi: 10.1152/jappl.1975.38.2.257.
Continuous recordings were made of oxygen consumption (VO2) and EEG, EMG, and EOG during two nights of sleep for 20 men who were between 19 and 63 yr. old. There was a linear decrease in overnight oxygen consumption with age, even though the older men slept less and woke more often than the younger ones. On the first night, VO2 was higher, and sleep stages less like normal than on the second. In the second night data, individual oxygen consumptions averaged over the whole night ranged from 138 to 482 ml/min (61-247 ml/m2timesmin). No relationship appeared between stage of sleep and VO2 level, but there was usually a decline in VO2 in the first hour of sleep, and a slow rise in the 2-3 h before awaking. Periodic breathing was observed in the men older than 45 yr.
对20名年龄在19至63岁之间的男性，在两个夜间睡眠期间连续记录了耗氧量（VO2）以及脑电图（EEG）、肌电图（EMG）和眼电图（EOG）。尽管年龄较大的男性睡眠时间比年轻男性少，醒来的次数也更多，但夜间耗氧量随年龄呈线性下降。在第一个晚上，VO2较高，睡眠阶段比第二个晚上更不像正常情况。在第二个晚上的数据中，整个晚上的个体平均耗氧量在138至482毫升/分钟（61 - 247毫升/平方米×分钟）之间。睡眠阶段与VO2水平之间未显示出相关性，但通常在睡眠的第一个小时VO2会下降，而在醒来前的2 - 3小时会缓慢上升。在45岁以上的男性中观察到了周期性呼吸。
