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The graph shows the physiological responses of two athletes from rest to maximum VO₂ during exercise - HSC - SSCE Personal Development and Physical Education - Question 20 - 2008 - Paper 1
Question 20
The graph shows the physiological responses of two athletes from rest to maximum VO₂ during exercise. One is trained and the other is not. What does the dotted line... show full transcript
Worked Solution & Example Answer:The graph shows the physiological responses of two athletes from rest to maximum VO₂ during exercise - HSC - SSCE Personal Development and Physical Education - Question 20 - 2008 - Paper 1
Step 1
What does the dotted line X represent?
Answer
The dotted line X in the graph represents the cardiac output of the untrained athlete. In general, trained athletes exhibit a higher cardiac output at maximum VO₂ compared to untrained individuals due to adaptations related to exercise training, such as increased stroke volume and heart rate. Therefore, the correct answer is (B) Cardiac output of the untrained athlete.