Key result
Physiological myocardial hypertrophy in well-trained rowers did not lead to an increase in clinically significant QTc interval duration or dispersion at rest or during 24-hour ECG monitoring.
Why the study?
Does physiological myocardial hypertrophy increase QT interval duration and dispersion in well-trained rowers?
Population
26 well-trained male and female rowers aged 17 to 22 years (mean 18.9±2.0) from a single rowing center.
Comparison
Physiological myocardial hypertrophy due to… vs Rowers with normal ventricular myocardial mass
Design
Cross-sectional
Authors
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Supports QTc safety in rowers with physiological hypertrophy; hypothesis-generating for prospective athlete cardiac monitoring.
Cross-Sectional (n=26)
No
Does physiological myocardial hypertrophy increase QT interval duration and dispersion in well-trained rowers?
Absolute Event Rate: 412.3% vs 406%
p-value: p=0.77
Athlete's heart syndrome with myocardial hypertrophy is a benign phenomenon that does not lead to clinically significant increases in QTc interval duration or dispersion.
Lutfullin et al. (2013) conducted a cross-sectional in Physiological myocardial hypertrophy (n=26). Physiological myocardial hypertrophy vs. Normal ventricular myocardial mass was evaluated on QTc interval duration at rest (ms) (p=0.77). Physiological myocardial hypertrophy in well-trained rowers did not lead to an increase in clinically significant QTc interval duration or dispersion at rest or during 24-hour ECG monitoring.
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