Key result
Increased physical activity in monozygotic twins led to 29% higher Cornell voltage (P=0.02) and 37% higher right-side hypertrophy index (P=0.01), with no significant echocardiographic changes.
Why the study?
Does volitionally increased physical activity alter electrocardiographic and echocardiographic parameters in monozygotic twins?
Population
9 pairs of young adult male monozygotic twins from a Finnish twin cohort, discordant for physical activity…
Comparison
More active group with volitionally increased… vs Less active group co-twins with lower VO2max.
Design
Cross-sectional
Authors
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ECG voltage increases with activity in twins warrant no practice change; hypothesis-generating for exercise effects on cardiac remodeling.
Cross-Sectional (n=18)
Does volitionally increased physical activity alter electrocardiographic and echocardiographic parameters in monozygotic twins?
Increased physical activity in monozygotic twins induces significant electrocardiographic changes suggestive of left ventricular hypertrophy, without statistically significant echocardiographic changes.
Hannukainen et al. (2005) conducted a cross-sectional in Discordant physical fitness (n=18). More active group (MAG) vs. Less active group (LAG) was evaluated on Electrocardiographic and echocardiographic parameters. Increased physical activity in monozygotic twins led to 29% higher Cornell voltage (P=0.02) and 37% higher right-side hypertrophy index (P=0.01), with no significant echocardiographic changes.
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