Heart rate and breathing rate increase while running a race. Which statement explains how this helps the runner?
Understand the Problem
The question is asking for an explanation of why heart rate and breathing rate increase during running, specifically identifying how this physiological response aids the runner. It involves understanding the relationship between bodily functions and physical exertion.
Answer
The leg muscles need more oxygen from the respiratory system to release energy needed to run the race.
The leg muscles need more oxygen from the respiratory system to release energy needed to run the race.
Answer for screen readers
The leg muscles need more oxygen from the respiratory system to release energy needed to run the race.
More Information
During a race, the increased heart and breathing rates enhance the supply and delivery of oxygen to the muscles, particularly the legs, allowing for greater energy production through cellular respiration.
Sources
- Heart rates - Nuffield Foundation - nuffieldfoundation.org
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