Key result
Endurance and strength training in athletes was associated with significant distinctions in the amplitude of the maximum negative extremum and timing of inversions during ventricular depolarization.
Why the study?
Do the spatiotemporal characteristics of the heart electrical field during ventricular depolarization differ between athletes training for endurance versus strength?
Observational
Do the spatiotemporal characteristics of the heart electrical field during ventricular depolarization differ between athletes training for endurance versus strength?
Endurance and strength training induce distinct changes in the spatiotemporal characteristics of the heart's electrical field during ventricular depolarization in highly skilled athletes.
Supports distinct depolarization patterns by training type in athletes; hypothesis-generating and requires prospective validation before clinical consideration.
As a result of haemodynamic and structural changes occurring in athletes' heart under the influence of systematic physical loads, myocardial electrical activity changes that is reflected on the electric field being formed on the body surface. The heart electrical activity during ventricular depolarization at rest has been investigated in the highly skilled athletes who train to develop physical characteristics--endurance and strength by a method of electrocardiotopography. In the investigated sportsmen under uniformity of the character of the movement of positive and negative cardioelectric potential zones and localization of extrema, and general depolarization duration, the significant distinctions of: 1) amplitude of the maximum negative extremum, 2) the time of the beginning and end of the first inversion, 3) duration of the second inversion, the initial stage and the stability period between inversions, 4) the relative location of the zones of positive and negative cardiopotentials were revealed.
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Strelnikova et al. (2014) conducted an observational in Highly skilled athletes. Endurance and strength training was evaluated on Heart electrical activity during ventricular depolarization at rest. Endurance and strength training in athletes was associated with significant distinctions in the amplitude of the maximum negative extremum and timing of inversions during ventricular depolarization.
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