Vaara Jani, Kyröläinen Heikki, Koivu Mikko, Tulppo Mikko, Finni Taija
Department of Biology of Physical Activity, University of Jyväskylä, Jyväskylä, Finland.
Eur J Appl Physiol. 2009 Feb;105(3):439-44. doi: 10.1007/s00421-008-0921-5. Epub 2008 Nov 12.
This study examined cardiovascular regulation and body temperature (BT) during 60 h of sleep deprivation in 20 young healthy cadets. Heart rate variability was measured during an active orthostatic test (AOT). Measurements were performed each day in the morning and evening after 2, 14, 26, 38, 50 and 60 h of sleep deprivation. In AOT, in the sitting and standing positions, heart rate decreased (P < 0.001), while high frequency and low frequency power increased (P < 0.05-0.001) during sleep deprivation. Body temperature also decreased (P < 0.001), but no changes were detected in blood pressure. In conclusion, the accumulation of 60 h of sleep loss resulted in increased vagal outflow, as evidenced by decreased heart rate. In addition, BT decreased during sleep deprivation. Thus, sleep deprivation causes alterations in autonomic regulation of the heart, and in thermoregulation.
本研究对20名年轻健康的军校学员在60小时睡眠剥夺期间的心血管调节和体温（BT）进行了检测。在主动直立试验（AOT）期间测量心率变异性。在睡眠剥夺2、14、26、38、50和60小时后的每天早晚进行测量。在AOT中，在坐位和站立位时，睡眠剥夺期间心率下降（P<0.001），而高频和低频功率增加（P<0.05 - 0.001）。体温也下降（P<0.001），但血压未检测到变化。总之，60小时睡眠缺失的累积导致迷走神经传出增加，心率下降证明了这一点。此外，睡眠剥夺期间体温下降。因此，睡眠剥夺会导致心脏自主调节和体温调节的改变。
