Why the study?
Does genetic inheritance influence acute echocardiographic changes during submaximal bicycle exercise in young male twins?
Population
66 male twins (21 monozygotic pairs, 12 dizygotic pairs), ages 18-31 years.
Comparison
Submaximal supine bicycle exercise at a heart… vs Resting conditions
Design
Cross-sectional
Authors
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Supports genetic contribution to exercise LV responses in young males; leaves open generalizability and clinical relevance.
Does genetic inheritance influence acute echocardiographic changes during submaximal bicycle exercise in young male twins?
The capacity to increase end-diastolic left ventricular internal dimension and fractional shortening during submaximal exercise has a significant genetic component.
Bielen et al. (1991) studied this question.
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