Which symptom is most associated with parasympathetic overtraining?

Which symptom is most associated with parasympathetic overtraining?

• A. Decreased heart rate
• B. Depression
• C. Increased energy
• D. Rapid heart rate and insomnia

Answer: (A)

Parasympathetic overtraining reflects dominance of the rest-and-digest side of the autonomic nervous system. When the vagal (parasympathetic) input is relatively strong, the heart rate sits lower at rest because the vagus nerve slows the heart. This bradycardia at rest is the hallmark sign of parasympathetic overtraining. In contrast, rapid heart rate with insomnia points to sympathetic overtraining and heightened arousal, while depression or feeling of increased energy aren’t as directly tied to this autonomic pattern. So, the symptom most associated with parasympathetic overtraining is a decreased resting heart rate.

Parasympathetic overtraining reflects dominance of the rest-and-digest side of the autonomic nervous system. When the vagal (parasympathetic) input is relatively strong, the heart rate sits lower at rest because the vagus nerve slows the heart. This bradycardia at rest is the hallmark sign of parasympathetic overtraining. In contrast, rapid heart rate with insomnia points to sympathetic overtraining and heightened arousal, while depression or feeling of increased energy aren’t as directly tied to this autonomic pattern. So, the symptom most associated with parasympathetic overtraining is a decreased resting heart rate.