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Lutfullin, IY, Kim, ZF, Bilalova, RR, Tsibulkin, NA, Almetova, RR, Mudarisova, RR and Ahmetov, II (2013) A 24-hour ambulatory ECG monitoring in assessment of QT interval duration and dispersion in rowers with physiological myocardial hypertrophy. Biology of Sport, 30 (4). pp. 237-241. ISSN 0860-021X
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A 24-hour ambulatory ecg monitoring in assessment of qt interval duration and dispersion in rowers with physiological myocar.pdf - Published Version Available under License Creative Commons Attribution Share Alike. Download (289kB) | Preview |
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 QT 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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Science & Technology; Life Sciences & Biomedicine; Sport Sciences; athletes; myocardial hypertrophy; left ventricular mass; QT interval; Holter monitoring; LEFT-VENTRICULAR HYPERTROPHY; AMERICAN-SOCIETY; HEART; ENDURANCE; LONG; ECHOCARDIOGRAPHY; RECOMMENDATIONS; HYPERTENSION; GUIDELINES; COMMITTEE; Holter monitoring; QT interval; athletes; left ventricular mass; myocardial hypertrophy; 1106 Human Movement and Sports Sciences; Sport Sciences |
| Subjects: | Q Science > QH Natural history > QH426 Genetics R Medicine > RC Internal medicine > RC1200 Sports Medicine |
| Divisions: | Sport & Exercise Sciences |
| Publisher: | Termedia Publishing |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 30 Apr 2024 10:43 |
| Last Modified: | 30 Apr 2024 10:43 |
| DOI or ID number: | 10.5604/20831862.1077547 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/23077 |
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