HKDSE PE Practice Questions - Hong Kong Diploma Of Secondary Education (HKDSE) Physical Education Exam

During steady submaximal jogging, which cardiovascular change correctly describes cardiac output?

Cardiac output rises because heart rate and often stroke volume increase Cardiac output falls because stroke volume always drops to zero Cardiac output is unchanged because only respiratory rate adjusts Cardiac output falls solely due to increased venous return

Correct Answer:

Cardiac output rises because heart rate and often stroke volume increase

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