Citations 1
Reduction in respiratory muscle strength following a series of preparatory and maximal static, dry breath-holds
Hubbard, Colin D. , Vrdoljak, Dario , Cross, Troy J. , Lovering, Andrew T. , Drviš, Ivan, Dujić, Željko , Foretić, Nikola , Duke, Joseph W. , Coombs, Geoff B , Cross, Troy James , Taylor, Bryan J , Lovering, Andrew T , Dujić, Željko , Foretić, Nikola , Duke, Joseph W , Hubbard, Colin D. , Taylor, Bryan J.
Journal of Applied Physiology | October 3, 2025 | Volume: 139 | Issue: 5 | Pages: 1235-1245
10.1152/japplphysiol.00256.2025
Respiratory muscle fatigue could occur following involuntary breathing movements during maximal breath-holds. We measured respiratory muscle strength pre and post three preparatory and maximal breath-holds. We found significant reductions in diaphragm strength and total inspiratory and expiratory strength in some, but not all, divers. Divers that had respiratory muscle fatigue had a lower pseudo O 2 delivery (HR × [Formula: see text]) during the struggle phase. This suggests that reduced oxygen delivery may contribute to respiratory muscle fatigue during a breath-hold.