Drewett P N, Zbrozyna A W
Physiol Behav. 1985 Oct;35(4):529-32. doi: 10.1016/0031-9384(85)90135-0.
Blood pressure and heart rate changes were monitored in rats immediately before exercise--running up a set of stairs 54 cm long. The rats were divided into two groups: (1) avoidance, (2) food intake. For both groups the run was preceded by an 80 dB buzzer lasting 5-15 sec. When the criterion for the conditioned response to the buzzer was achieved all avoidance rats showed significant increases of heart rate, systolic and diastolic blood pressure before exercise, during the buzzer. Of the food intake group all but one showed no significant cardiovascular changes before exercise, in response to the sound. It is concluded that exercise itself in these experiments could not have contributed significantly to the anticipatory cardiovascular changes, unless it is associated with an aversive event.
在大鼠跑上一组54厘米长的楼梯进行运动前，立即监测其血压和心率变化。大鼠被分为两组：（1）回避组，（2）食物摄入组。两组大鼠在跑步前都会有一个持续5 - 15秒、强度为80分贝的蜂鸣声。当达到对蜂鸣声的条件反应标准时，所有回避组大鼠在运动前、蜂鸣声响起期间，心率、收缩压和舒张压均显著升高。食物摄入组中，除一只大鼠外，其他大鼠在运动前对声音没有明显的心血管变化。结论是，在这些实验中，除非运动与厌恶事件相关，否则运动本身对预期的心血管变化影响不大。
