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Related Experiment Videos

Exercise training improves left ventricular systolic function in older men.

A A Ehsani1, T Ogawa, T R Miller

  • 1Department of Medicine, Mallinckrodt Institute of Radiology, St. Louis, MO.

Circulation
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

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Endurance exercise training significantly improved left ventricular systolic function in older men, enhancing ejection fraction during exercise. This training also reduced body fat and increased maximal oxygen uptake (Vo2max).

Area of Science:

  • Cardiology
  • Exercise Physiology
  • Gerontology

Background:

  • Aging is associated with declines in cardiovascular function.
  • Sedentary lifestyles in older adults can exacerbate these declines.
  • Understanding the impact of exercise on cardiac function in older men is crucial.

Purpose of the Study:

  • To investigate the effects of endurance exercise training on left ventricular systolic function in healthy, older sedentary men.
  • To assess changes in maximal oxygen uptake (Vo2max) and body composition following training.

Main Methods:

  • 10 healthy sedentary men (mean age 64 years) underwent a 11.8-month endurance exercise program.
  • Training involved 4 days/week at 60-80% of Vo2max, with intermittent high-intensity intervals.

Related Experiment Videos

  • Left ventricular ejection fraction was measured using electrocardiographic-gated equilibrium blood pool imaging at rest and peak exercise.

    • Main Results:

    • Vo2max increased significantly (p < 0.001) and percent body fat decreased (p < 0.001).
    • Left ventricular ejection fraction increase during exercise was significantly greater after training compared to before.
    • End-systolic volume decreased significantly at peak exercise post-training, indicating improved systolic function.

    Conclusions:

    • Endurance exercise training effectively improves left ventricular systolic function in older men.
    • Training leads to significant enhancements in cardiorespiratory fitness and body composition.
    • The observed improvements in systolic function are comparable to those seen in younger individuals.