During exercise in physiological limits, what is the effect on end-systolic volume?
ESV remains unchanged
ESV first decreases and then increases
Ans. A. ESV decreases
- During exercise, there is an increase in preload (end-diastolic volume)- increased venous return.
- Increase in afterload – increased Mean BP and increased stroke volume due to improved myocardial contractility.
- Therefore, the ESV is decreased in the exercise