Mixed
Endurance exercise training improves cardiovascular function (maximal oxygen intake, stroke volume, and cardiac index) in healthy older men to a degree that is not significantly different from young men, despite age-related declines in resting and peak exercise hemodynamics.
If you are a healthy older man, starting a supervised endurance training program (walking, jogging, cycling) 4-5 times a week for 45 minutes can significantly improve your heart's ability to pump blood and your overall endurance. You can expect improvements in your maximum oxygen uptake and stroke volume that are comparable to those seen in young men, proving that age does not preclude cardiovascular adaptation.
Despite the significant cardiovascular changes that occur in the response to a single bout of exercise with aging, adaptations to chronic exercise training were not different with aging and included improvements in maximal workload and increases in ejection fraction, stroke volume index, and cardiac index at peak exercise.
Why this rating
Randomized controlled trial with rigorous screening, but small sample size (n=24) and short duration (6 months).
Source
Cardiovascular responses to exercise. Effects of aging and exercise training in healthy men.
Jon Stratton et al. · Circulation · 1994
DOI 10.1161/01.cir.89.4.1648
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