{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T20:31:41Z","timestamp":1792787501239,"version":"4.5.0"},"reference-count":47,"publisher":"American Physiological Society","issue":"5","funder":[{"DOI":"10.13039\/100022627","name":"FULBRIGHT | Fulbright U.S. Scholar Program","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100022627","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100003231","name":"PADI Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100003231","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Support for Graduate Students Award"},{"DOI":"10.13039\/100008227","name":"Achievement Rewards for College Scientists Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100008227","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.physiology.org"],"crossmark-restriction":true},"short-container-title":["Journal of Applied Physiology"],"published-print":{"date-parts":[[2025,11,1]]},"abstract":"<jats:p>\n                    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\n                    <jats:sub>2<\/jats:sub>\n                    delivery (HR \u00d7 [Formula: see text]) during the struggle phase. 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