[Effect of neural regulation on the fluctuations in the intervals between cardiac contractions and the force of the contractions].
Statistical analysis of the cardiac rhythm according to the R--R intervals and the force of contractions according to their amplitude was undertaken. The variation coefficient (N%) reflecting the degree of irregularity of intervals between the contractions and the force of contractions during maximum cardiac hyperfunction induced by clamping the aorta for 30 sec was determined. Vagotomy led to a decrease in the irregularity for cardiac rhythm and force of cardiac contractions.
D000818:Animals; D001794:Blood Pressure; D003714:Denervation; D004558:Electric Stimulation; D006321:Heart / Q000502:physiology*; D006329:Heart Conduction System / Q000502:physiology*; D006339:Heart Rate; D008297:Male; D009200:Myocardial Contraction; D005082:Physical Exertion; D051381:Rats; D011942:Receptors, Adrenergic, alpha / Q000502:physiology; D011943:Receptors, Adrenergic, beta / Q000502:physiology; D013997:Time Factors; D014628:Vagotomy; D016276:Ventricular Function
D011942:Receptors, Adrenergic, alpha; D011943:Receptors, Adrenergic, beta
Vliianie nervnoĭ reguliatsii na kolebaniia intervalov mezhdu serdechnymi sokrashcheniiami i sily sokrashcheniĭ.