Aerobic Fitness Effects On Exercise-Induced Low-Frequency Diaphragm Fatigue

“Bilateral phrenic nerve stimulation was used to compare the amount of exercise-induced diaphragm fatigue between two groups of healthy subjects, a high-fit group and a fit group.”

Conclusion:

“The high-fit subjects showed diaphragm fatigue as a result of heavy endurance exercise but were also partially protected from excessive fatigue, despite high ventilatory requirements, because their hyperventilatory response to endurance exercise was reduced, their diaphragm was utilized less in providing the total ventilatory response, and possibly their diaphragm aerobic capacity was greater.”

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