{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T01:05:24Z","timestamp":1760058324940,"version":"build-2065373602"},"reference-count":28,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2025,3,26]],"date-time":"2025-03-26T00:00:00Z","timestamp":1742947200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JFMK"],"abstract":"<jats:p>Background\/Objectives: The inspiratory muscles play a fundamental role in cardiorespiratory performance, especially in water sports. The main objective of this study was to investigate the effects of an inspiratory muscle warm-up (IMW) protocol on the performance and respiratory parameters of scuba divers prior to performing two diving tests, one static and the other dynamic. Methods: Eight young, active divers (six men and two women; 26.63 \u00b1 4.67 years of age) volunteered for the study. In two sessions, one using an IMW protocol and the other without IMW, participants performed two underwater tests with a gas tank: a static immersion at the bottom of the pool for 5 min and a dynamic test consisting of swimming underwater for 12 min at 1 m\/s. Some cardiorespiratory parameters such as gas expenditure, oxygen saturation (SO2), heart rate (HR), spirometry, and rating of perceived exertion (RPE) were measured before and after each of the tests. Results: Significant differences were observed in gas expenditure using IMW in both static and dynamic testing (p &lt; 0.05) and in RPE in dynamic testing (p &lt; 0.05). HR values were significantly higher in the pre-dynamic test with IMW and the post-static test with IMW. Finally, with the use of IMW, spirometry values were significantly higher (p &lt; 0.05) in static tests after immersion, whereas in the dynamic test, they were significantly higher before the immersion (p &lt; 0.05). Conclusions: Based on the results of this study, the use of the IMW prior to a dive would be recommended for better overall physical performance, oxygen expenditure, improved pulmonary function, and lower perceived exertion.<\/jats:p>","DOI":"10.3390\/jfmk10020105","type":"journal-article","created":{"date-parts":[[2025,3,26]],"date-time":"2025-03-26T13:39:53Z","timestamp":1742996393000},"page":"105","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Acute Effects of Inspiratory Muscle Warm-Up on Performance and Cardiorespiratory Parameters of Scuba Divers\u2014A Preliminary Study"],"prefix":"10.3390","volume":"10","author":[{"given":"Ricardo","family":"Alberola-Blanes","sequence":"first","affiliation":[{"name":"Department of Education, Health Research Center, University of Almeria, 04120 Almeria, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6126-5289","authenticated-orcid":false,"given":"Fernando","family":"Alacid","sequence":"additional","affiliation":[{"name":"Department of Education, Health Research Center, University of Almeria, 04120 Almeria, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2662-9486","authenticated-orcid":false,"given":"Carmen Daniela","family":"Quero-Calero","sequence":"additional","affiliation":[{"name":"International Chair of Sport Medicine, UCAM Catholic University of Murcia, 30007 Murcia, Spain"},{"name":"Faculty of Sport, UCAM Catholic University of Murcia, 30007 Murcia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1832-273X","authenticated-orcid":false,"given":"Daniel","family":"L\u00f3pez-Plaza","sequence":"additional","affiliation":[{"name":"Faculty of Education, University of Zaragoza, 50009 Zaragoza, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,3,26]]},"reference":[{"key":"ref_1","first-page":"121","article-title":"Practice guideline for multidisciplinary investigation of diving fatalities","volume":"50","author":"Aguirre","year":"2024","journal-title":"Rev. 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