What primarily influences the increase in heart rate during exercise?
Understand the Problem
The question is asking about the factors that lead to an increase in heart rate during physical activity. It seeks to identify the specific physiological changes that occur in response to exercise.
Answer
Removal of parasympathetic stimulation and sympathetic activation.
The increase in heart rate during exercise is primarily influenced by the removal of parasympathetic stimulation and the activation of the sympathetic nervous system.
Answer for screen readers
The increase in heart rate during exercise is primarily influenced by the removal of parasympathetic stimulation and the activation of the sympathetic nervous system.
More Information
As exercise begins, the removal of parasympathetic influence allows the heart rate to increase. With more strenuous activity, sympathetic nervous system activation further accelerates the heart rate to meet the increased oxygen demands of the muscles.
Tips
A common mistake is to overlook the role of the parasympathetic nervous system and only focus on the sympathetic activation. Both systems play crucial roles during exercise.
Sources
- Cardiovascular Effects and Benefits of Exercise - PMC - NCBI - ncbi.nlm.nih.gov
- Exercise Physiology: Cardio/CNS contribution - medicine.mcgill.ca
- What Is Cardiac Drift And How It Affects Your Training | Polar Journal - polar.com
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