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Question
Describe the following:
Stroke Volume
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Solution
The volume of blood pumped out by the heart during a single contraction (heart beat). During activity, stroke volume increases because the working muscles require more oxygen.
Regular exercise can increase an athlete's stroke volume by 20 to 50 percent, indicating greater cardiovascular efficiency. This increased stroke volume improves oxygen transport to muscles during physical exercise and is a reliable indication of cardiovascular fitness.
These two physiological parameters provide important information about an athlete’s cardiovascular and respiratory response to training. While residual volume shows respiratory system efficiency, stroke volume demonstrates cardiovascular system adaptation, both of which are necessary components for increased athletic performance.
