@Article{Lutfullin2013,
journal="Biology of Sport",
issn="0860-021X",
volume="30",
number="4",
year="2013",
title="Original paperA 24-HOUR AMBULATORY ECG MONITORING IN ASSESSMENT OF QT INTERVAL DURATION AND DISPERSION IN ROWERS WITH PHYSIOLOGICAL MYOCARDIAL HYPERTROPHY",
abstract="Myocardial hypertrophy (MH) due to cardiac pathology is characterized by an increase in QT interval duration and dispersion, while the findings for exercise-induced myocardial hypertrophy are contradictory.  The majority of published research findings have not explored this relationship, but there have only been a few conducted studies using 24-hour ECG monitoring. The aim of the study was to determine the QT interval duration and dispersion in short-term and 24-hour ECG in endurance athletes with myocardial hypertrophy and without it. Methods: A total of 26 well-trained rowers underwent a resting 12-lead ECG, 24-hour ECG monitoring and echocardiography. Results: Athletes with MH (n = 7) at rest did not show any increase in QTc interval duration and dispersion, or mean and maximal QTc duration in Holter monitoring compared to athletes without  MH (n = 19). Left ventricular mass was not significantly correlated with any QTc characteristics. Furthermore, athletes with MH had significantly longer mean QT (P = 0.01) and maximal QT (P = 0.018) intervals in Holter monitoring and higher 24-hour heart rate variability indexes due to stronger vagal effects. Conclusions:  The present study demonstrated that athlete’s heart syndrome with myocardial hypertrophy as a benign phenomenon does not lead to an increase in QTс interval duration, or increases in maximal and mean duration in a 24-hour ECG. An increase in QT interval duration in athletes may have an autonomic nature.",
author="Lutfullin, I.Y.
and Kim, Z.F.
and Bilalova, R.R.
and Tsibulkin, N.A.
and Almetova, R.R.
and Mudarisova, R.R.
and Ahmetov, I.I.",
pages="237--241",
url="https://www.termedia.pl/Original-paper-A-24-HOUR-AMBULATORY-ECG-MONITORING-IN-ASSESSMENT-OF-QT-INTERVAL-DURATION-AND-DISPERSION-IN-ROWERS-WITH-PHYSIOLOGICAL-MYOCARDIAL-HYPERTROPHY,78,23353,1,1.html"
}