Exercise and Cardiac Output

Physical activity is beneficial for cardiovascular health.

For example, the American Heart Association recommends moderate-intensity aerobic exercises, such as brisk walking, cycling, and swimming, for 150 minutes per week for a healthy heart.

During workouts, the oxygen demand of active muscles increases substantially.

The stroke volume is enhanced to meet this requirement, increasing cardiac output and overall cardiac performance.

Long-term exercise also lowers the resting heart rate, improving cardiovascular efficiency by reducing the number of beats needed to circulate oxygen.

In professional athletes, the maximum cardiac output is significantly increased due to intense training, which promotes the enlargement or hypertrophy of the heart, a condition known as physiological hypertrophy.

Despite the larger heart size, a trained athlete's resting cardiac output is similar to that of a healthy, untrained individual, as a decreased heart rate compensates for the increased stroke volume.

Additional benefits of exercise include reducing blood pressure, anxiety, depression, and controlling weight.