[Adaptation to exercises after exposure to restriction stress]. / Adaptatsiia k fizicheskim nagruzkam posle vozdeistviia immobilizatsionnogo stressa.

Adaptation to exercises was studied in rabbits exposed to restriction stress. Transition from 30-day inactivity to the routine motor activity and subsequent exercises was found to cause a further progression of blood atherogenic changes, ulcerative arteriosclerosis, and heart failure.

[Anti-arrhythmic activity of the beta2-adrenoblockader alpheprol]. / Protivoaritmicheskaia aktivnost' beta2-adrenoblokatora alfeprola

Experiments were conducted on dogs, cats and rats in which various disturbances of the cardiac rhythm were induced. Beta2-adrenoblocker alpheprol proved to produce a marked antiarrhythmic action. The preparation arrested the auricular arrhythmias caused by electric stimulation of the auricles or by aconitine application, eliminated the auricular arrhythmias resulting from occlusion of a branch of the coronary artery or oubaine intoxication, prevented lethal auricular fibrillation in rats after the calcium chloride intoxication. It is supposed that along with the beta-adrenoreceptor block the antiarrhythmic effect of alpheprol was also caused by quinidine-like action of the preparation.