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THE TIME SERIES OF THE HEART RHYTHM MODELING DURING ADAPTATION TO PHYSICAL LOAD

A. L. POKHACHEVSKIY(1), A. B. PETROV(2), S. P. BODKO(1), V. K. SEISEBAEV(1), A. N. TUKHFATULLIN(1), A. M. GILEV(2), A. A. KHOMENKO(3) 1-ACADEMY OF LAW MANAGEMENT OF THE FEDERAL PENAL SERVICE OF RUSSIA, RYAZAN, RUSSIA 2-LESGAFT NATIONAL STATE UNIVERSITY OF PHYSICAL EDUCATION, SPORT AND HEALTH, SAINT-PETERSBURG, RUSSIA 3-VORONEZH INSTITUTE OF THE ACADEMY OF LAW MANAGEMENT OF THE FEDERAL PENAL SERVICE OF RUSSIA, VORONEZH, RUSSIA
Objective: to study the possibilities of mathematic model (M/M) of time series (TS) of the heart rhythm (HR) during the loading period (LP) to discover the best prognostic markers of the physical exercise (PE) tolerance.
Materials and methods: we examined a mixed population (68 persons) of apparently healthy youth at the age from 16-23 years old (mean age – 19±3 years (M±m)). M/M TS LP was calculated using the formula: Y=aX+b, where «a» and «b» refered to the model variability parameters, «X» was the serial number and «Y» was the R-R interval size. The results of ergometric stresstest including index of power of loading, HR and M/Mduringthefirst minutes of LP were analyzed with Spearman correlation.
Results: markers ofM/ MTS LP can be used for studying PE tolerance. PE’s power and its individual tolerance is determined by TS HR during early adaptation period (EAP). Markers of M/M EAP correlate with PE tolerance just as the average and the maximum value of heart rate defined for the entire LP.
Conclusions: mathematic simulation of the time series of the HR EAP is promising for predicting the PE tolerance.
Keywords: 
mathematical modeling; cardiac rhythmogram; physical exercise; maximal load test