Why the study?
Does submaximal exercise alter left ventricular dimensions and wall stress differently in athletes versus untrained controls?
Population
14 athletes (rowers and swimmers) and 7 control subjects
Comparison
Submaximal exercise vs Untrained control subjects
Design
Cross-sectional
Follow-up
immediately after exercise
Authors
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Preserves normal wall stress during submaximal exercise; extends mechanistic understanding of athlete cardiac adaptation but leaves open prospective validation.
Does submaximal exercise alter left ventricular dimensions and wall stress differently in athletes versus untrained controls?
Afterload is a key determinant of cardiac performance and hypertrophy in athletes, allowing larger left ventricular dimensions and augmented stroke volume during exercise while maintaining normal wall stress.
Cahill et al. (1979) studied this question.
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