What is the average stroke volume during exercise?

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Stroke volume refers to the amount of blood the heart pumps out with each beat, and it can vary based on several factors, including the individual's fitness level and the intensity of exercise. During rest, the average stroke volume for a healthy adult is typically around 70 mL per beat. However, during exercise, especially at moderate to high intensity, stroke volume can significantly increase due to enhanced cardiac output demands.

When engaging in physical activity, the body requires more oxygen, which leads to an increase in heart rate and stroke volume to meet these increased metabolic demands. It is common for stroke volume to range between 120 to 190 mL per beat during vigorous exercise, which aligns with the second choice provided. This range reflects how well-trained athletes can achieve higher values compared to untrained individuals. Maximum stroke volume can vary widely among individuals, but the 120-190 mL/b range is a commonly accepted average during exercise for many adults.

The other options presented are either significantly lower or much higher than typical physiological measures. For instance, the value of 4900 mL/b and 34200 mL/b would imply an unrealistic output that exceeds human heart capacities, indicating they are not feasible answers in this context. Thus, understanding stroke volume

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