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The graph shows the relationship between heart rate and exercise intensity for an individual over time - HSC - SSCE Personal Development and Physical Education - Question 15 - 2005 - Paper 1
Question 15
The graph shows the relationship between heart rate and exercise intensity for an individual over time. Which of the following best describes the purpose of this re... show full transcript
Worked Solution & Example Answer:The graph shows the relationship between heart rate and exercise intensity for an individual over time - HSC - SSCE Personal Development and Physical Education - Question 15 - 2005 - Paper 1
Step 1
To increase the amount of oxygen available to muscles
Answer
The relationship depicted in the graph indicates that as exercise intensity increases, so does heart rate. This physiological response allows for greater blood flow and oxygen delivery to the working muscles. Increased heart rate supports the demand for oxygen during higher intensity activities, thereby increasing the amount available for energy production and sustaining exercise performance.