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The graph shows the results of four athletes (W, X, Y, Z) whose oxygen uptake (VO₂) was measured while they were running at 8, 10 and 12 km/h - HSC - SSCE Personal Development and Physical Education - Question 19 - 2005 - Paper 1
Question 19
The graph shows the results of four athletes (W, X, Y, Z) whose oxygen uptake (VO₂) was measured while they were running at 8, 10 and 12 km/h. Which athlete demonst... show full transcript
Worked Solution & Example Answer:The graph shows the results of four athletes (W, X, Y, Z) whose oxygen uptake (VO₂) was measured while they were running at 8, 10 and 12 km/h - HSC - SSCE Personal Development and Physical Education - Question 19 - 2005 - Paper 1
Step 1
Which athlete demonstrated the most efficient oxygen uptake?
Answer
To determine which athlete demonstrated the most efficient oxygen uptake, we analyze the graph provided. The athlete with the highest VO₂ (ml/kg/min) at a given speed signifies better efficiency in oxygen use during running.
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Examine the Graph: Look at the lines representing athletes W, X, Y, and Z at the specified speeds of 8, 10, and 12 km/h.
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Identify the Highest VO₂ Values: For each speed, note the VO₂ value corresponding to each athlete. It is important to focus on the values at the highest speed (12 km/h) since maximum effort usually reveals efficiency.
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Compare the Lines: If athlete W has the highest VO₂ among all athletes at 12 km/h, then they demonstrate the most efficient oxygen uptake as they can utilize more oxygen effectively while running.
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Conclusion: Based on the analysis of the graph, it can be concluded that athlete W displayed the most efficient oxygen uptake, as they achieved the highest VO₂ levels compared to the others across all speeds.