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Related Experiment Videos

Effect of training on left ventricular structure and function. An echocardiographic study.

L M Shapiro, R G Smith

    British Heart Journal
    |December 1, 1983
    PubMed
    Summary

    Running training rapidly increases heart muscle mass, specifically left ventricular hypertrophy. This exercise-induced cardiac adaptation in healthy individuals does not impair heart relaxation or diastolic function.

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    Echocardiographic differentiation of pathological and physiological left ventricular hypertrophy.

    Heart (British Cardiac Society)·2001

    Area of Science:

    • Cardiology
    • Exercise Physiology
    • Sports Medicine

    Background:

    • Regular physical activity is known to induce cardiac adaptations.
    • Understanding the specific effects of running on cardiac structure and function is crucial.

    Purpose of the Study:

    • To investigate the cardiac effects of a moderate running training program.
    • To assess changes in left ventricular dimensions, mass, and diastolic function.

    Main Methods:

    • 15 healthy non-athletic males participated in a 6-week running program.
    • Echocardiography was used to measure left ventricular parameters at baseline and follow-up.
    • Participants were divided into two groups: continued running and stopped running.

    Main Results:

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    • Significant increases in running ability and maximum oxygen consumption were observed.
    • Left ventricular posterior wall and septal thickness increased after 6 weeks of running.
    • Left ventricular mass increased significantly during training and returned to baseline in those who stopped.

    Conclusions:

    • Exercise-induced left ventricular hypertrophy can develop rapidly with running training.
    • Increased myocardial mass from running is not associated with impaired diastolic function.
    • These adaptations differ from pathological hypertrophy, suggesting a healthy response to exercise.