Ul'ianinskiĭ L S
Vestn Ross Akad Med Nauk. 1995(11):21-6.
The role of parasympathic effects, graded motor activity, positive emotions, and delta-sleep peptide in enhancing the resistance of cardiac performance in experimental emotional stress was studied in chronic rabbit experiments. The prevalence of parasympathic effects was demonstrated to increase cardiac electric stability and to prevent the elevation of catecholamine levels and the development of myocardial structural damages during stress. A moderate motor activity was found to lead to the session of ventricular extrasystole occurring in stress due to decreases in the myocardial levels of epinephrine with its high levels remaining in blood. Ventricular extrasystole also disappeared after activation of the positive emotional centers of the hypothalamus and after administration of delta-sleep peptide normalizing the electrical stability of the heart in emotional stress.
在慢性兔实验中，研究了副交感效应、分级运动活动、积极情绪和δ-睡眠肽在实验性情绪应激中增强心脏功能抵抗力的作用。结果表明，副交感效应的普遍存在可增强心脏电稳定性，防止应激期间儿茶酚胺水平升高和心肌结构损伤的发生。发现适度的运动活动会导致应激期间室性期前收缩发作，这是由于心肌中肾上腺素水平降低，而血液中肾上腺素水平仍保持较高。在下丘脑积极情绪中枢激活后以及给予δ-睡眠肽使情绪应激下心脏电稳定性恢复正常后，室性期前收缩也消失了。
