Annual dynamics of dispersion mapping indicators of electrocardiogram tracing in students with different chronotypes

The paper examines the annual profile of fluctuating microalternations some ECG parameters in healthy students who live northern conditions and have different chronotypes. main method research was dispersion mapping that helped assess energy metabolic processes myocardium. Among male female students, 14,3% had morning chronotype, 50,7% arrhythmic 35% evening chronotype. Previously published results showed a similar distribution chronotypes among population north: individuals with chronotype dominate sample, is second most common, can be found smaller number people. seasonal dynamics indicators analyzed. analyses revealed an increase values Myocardium Index all spring, no significant deviations to noted. maximum Heart Rate Rhythm were noted minimum values, summer, observed. integral indicator pointed signs tension adaptation mechanisms subjects spring. Increased microalterations (Myocardium, Rate, Rhythm) spring may indicate influence climatic put greater stress on cardiovascular system transitional seasons. It manifested by change electrophysiological properties In circadian rhythms circulatory more sensitive hypocomfortable north.