{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T10:59:55Z","timestamp":1784631595200,"version":"3.55.0"},"reference-count":78,"publisher":"Human Kinetics","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,4,1]]},"abstract":"\n \n Background<\/jats:bold>\n :\n <\/jats:italic>\n The maximum oxygen uptake (\n \n ), respiratory compensation point (RCP), and maximal lactate steady state (MLSS) are indicators used to assess athletes\u2019 performance. There is scarce information available on the tolerable duration of exercise (time to exhaustion [TTE]) while running at these physiological indicators. We aimed to analyze the TTE when running at these indicators, as well as to determine their between-subject variability and within-subject reliability.\n \n Methods<\/jats:bold>\n :\n <\/jats:italic>\n Thirteen male athletes volunteered to participate (\n \n \u00a0mL\u00b7kg\n \u22121<\/jats:sup>\n \u00b7min\n \u22121<\/jats:sup>\n ). Participants\n \n , RCP, and MLSS were assessed through treadmill testing, and they performed 2 TTE tests on different occasions at the speed corresponding to each indicator, during which blood lactate, heart rate, and perceptual responses were measured.\n \n Results<\/jats:bold>\n <\/jats:italic>\n : TTEs were 03:38 (00:40), 10:58 (02:59), and 56:42 (13:02)\u00a0mm:ss at the\n \n , RCP, and MLSS, respectively. A moderate between-subject variability was observed (coefficient of variation\u2009=\u200918.3%, 27.3%, and 23.0% for\n \n , RCP, and MLSS), but no significant associations were found between TTEs and other fitness indicators, such as the speed at which these intensities occurred, nor between TTEs and\n \n (all\n r<\/jats:italic>\n \u2009<\u2009.1;\n P<\/jats:italic>\n \u2009>\u20090.2). A high within-subject (ie,\u00a0between-day) reliability was observed for the TTE at all indicators (coefficient of variation of 4.4%, 4.8%, and 6.4% for\n \n , RCP, and MLSS, respectively, and intraclass correlation coefficient of .94 and .97, and .90, respectively).\n \n Conclusions<\/jats:bold>\n :\n <\/jats:italic>\n Given their high within-subject reliability and their independence from other traditional physiological indicators of performance, TTE tests could be used for performance monitoring and for training prescription purposes.\n <\/jats:p>","DOI":"10.1123\/ijspp.2025-0511","type":"journal-article","created":{"date-parts":[[2026,2,20]],"date-time":"2026-02-20T02:31:25Z","timestamp":1771554685000},"page":"590-596","source":"Crossref","is-referenced-by-count":1,"title":["Time to Exhaustion at Traditional Physiological Indicators in Runners: Between-Subject and Between-Day Variability"],"prefix":"10.1123","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6087-1583","authenticated-orcid":true,"given":"Jesus G.","family":"Pallar\u00e9s","sequence":"first","affiliation":[{"name":"Human Performance and Sports Science Laboratory, University of Murcia, Murcia, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1730-3369","authenticated-orcid":true,"given":"Pedro L.","family":"Valenzuela","sequence":"additional","affiliation":[{"name":"GENUD Toledo Research Group, Faculty of Sport Sciences, Universidad de Castilla-La Mancha, Toledo, Spain"},{"name":"Department of Systems Biology, University of Alcal\u00e1, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9435-8163","authenticated-orcid":true,"given":"Alejandro","family":"Mart\u00ednez-Cava","sequence":"additional","affiliation":[{"name":"Human Performance and Sports Science Laboratory, University of Murcia, Murcia, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-5143-1623","authenticated-orcid":true,"given":"Enrique","family":"Higuera-Li\u00e9bana","sequence":"additional","affiliation":[{"name":"GENUD Toledo Research Group, Faculty of Sport Sciences, Universidad de Castilla-La Mancha, Toledo, Spain"},{"name":"Centro de Investigaci\u00f3n Biom\u00e9dica en Red Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain"},{"name":"Grupo Mixto de Fragilidad y Envejecimiento Exitoso UCLM-SESCAM (TEC2022-007), Instituto de Investigaci\u00f3n Sanitaria de Castilla-La Mancha (IDISCAM), Junta de Comunidades de Castilla-La Mancha (JCCM), Toledo, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7044-8191","authenticated-orcid":true,"given":"\u00c1ngel","family":"Buend\u00eda-Romero","sequence":"additional","affiliation":[{"name":"GENUD Toledo Research Group, Faculty of Sport Sciences, Universidad de Castilla-La Mancha, Toledo, Spain"},{"name":"Centro de Investigaci\u00f3n Biom\u00e9dica en Red Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain"},{"name":"Grupo Mixto de Fragilidad y Envejecimiento Exitoso UCLM-SESCAM (TEC2022-007), Instituto de Investigaci\u00f3n Sanitaria de Castilla-La Mancha (IDISCAM), Junta de Comunidades de Castilla-La Mancha (JCCM), Toledo, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-4816-7162","authenticated-orcid":true,"given":"Alfonso","family":"Cervantes","sequence":"additional","affiliation":[{"name":"Human Performance and Sports Science Laboratory, University of Murcia, Murcia, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9252-4933","authenticated-orcid":true,"given":"Ricardo","family":"Mora-Rodriguez","sequence":"additional","affiliation":[{"name":"Exercise Physiology Laboratory at Toledo, Faculty of Sports Sciences, University of Castilla-La Mancha, Toledo, Spain"},{"name":"Instituto de investigaci\u00f3n Sanitaria de Castilla-La Mancha, IDISCAM, Toledo, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"100","reference":[{"issue":"4","key":"r1","series-title":"Med Sci Sports Exerc","doi-asserted-by":"publisher","first-page":"287","DOI":"10.1249\/00005768-198315040-00006","article-title":"Physiological determinants of endurance performance as studied in competitive racewalkers","volume":"15","author":"Hagberg JM","year":"1983","unstructured":"Hagberg JM, Coyle EF. 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