The amount of blood pumped by the left ventricle with each heartbeat.
FULL EXPLANATION
Stroke volume is the volume of blood ejected from the left ventricle of the heart with each contraction, typically measured in milliliters. Combined with heart rate, it determines cardiac output (the total blood pumped per minute).
Higher stroke volume means your heart can pump more blood with fewer beats, which is why trained athletes often have lower resting heart rates. Stroke volume increases with training as the heart becomes stronger and more efficient.
WHY IT MATTERS
Higher stroke volume indicates a more efficient heart. It's a key adaptation to endurance training and contributes to improved exercise capacity and cardiovascular health.
HOW TO IMPROVE
Improve stroke volume through regular endurance training, particularly zone 2 cardio and long slow distance training. Adequate hydration and nutrition support optimal stroke volume.
NORMAL RANGES
Normal stroke volume at rest is 60-100 mL per beat. Athletes may have stroke volumes of 100-150 mL or higher. During exercise, stroke volume can increase 20-50%.
RELATED TERMS
VO2 Max
The maximum rate of oxygen consumption during intense exercise, a gold-standard measure of cardiovascular fitness.
Resting Heart Rate
The number of heartbeats per minute while at complete rest, typically measured upon waking.
Zone 2 Training
Low to moderate intensity cardio training that maximizes fat oxidation and builds aerobic base without accumulating significant fatigue.
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