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RE, minute ventilation (<jats:inline-formula\/>), oxygen consumption (<jats:inline-formula\/>), carbon dioxide production (<jats:inline-formula\/>), respiratory exchange ratio\u00a0(RER), heart rate\u00a0(HR), ratings of perceived exertion\u00a0(RPE), and blood glucose and lactate concentrations were recorded for each stage and at volitional exhaustion. Time-to-exhaustion (TTE) and peak oxygen consumption (<jats:inline-formula\/>) during the ramp test were also recorded. Absolute reliability, calculated as the coefficient of variation (CV) between repeated measures, ranged from 2.3% to 3.1% for RE, whereas relative reliability, calculated as the intraclass correlation coefficient\u00a0(ICC), ranged from .42 to .79. <jats:inline-formula\/>, <jats:inline-formula\/>, <jats:inline-formula\/>, <jats:inline-formula\/>, RER, and HR had a CV of 1.1%\u20134.3% across all stages. TTE and RPE had a CV of 7.2% and 2.3%\u201310.8%, respectively, while glucose and lactate had a CV of 4.0%\u201317.8%. All other\u00a0parameters, except for blood glucose, were demonstrated to have <jats:italic>good-to-excellent<\/jats:italic> relative reliability assessed by ICC. Measures of RE, <jats:inline-formula\/>, and TTE were reliable during this two-phase multistage incremental treadmill test in a cohort of trained and highly trained male middle- and long-distance runners.<\/jats:p>","DOI":"10.1123\/ijsnem.2023-0272","type":"journal-article","created":{"date-parts":[[2024,6,1]],"date-time":"2024-06-01T10:51:59Z","timestamp":1717239119000},"page":"307-314","source":"Crossref","is-referenced-by-count":3,"title":["Test\u2013Retest Reliability of Running Economy and Metabolic and Cardiorespiratory Parameters During a Multistage Incremental Treadmill Test in Male Middle- and Long-Distance Runners"],"prefix":"10.1123","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9427-5771","authenticated-orcid":true,"given":"Aidan J.","family":"Brady","sequence":"first","affiliation":[{"name":"School of Health and Human Performance, Dublin City University, Glasnevin, Dublin, Ireland"},{"name":"Insight Centre for Data Analytics, Dublin City University, Glasnevin, Dublin, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1329-2570","authenticated-orcid":true,"given":"Mark","family":"Roantree","sequence":"additional","affiliation":[{"name":"Insight Centre for Data Analytics, Dublin City University, Glasnevin, Dublin, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8327-9016","authenticated-orcid":true,"given":"Brendan","family":"Egan","sequence":"additional","affiliation":[{"name":"School of Health and Human Performance, Dublin City University, Glasnevin, Dublin, Ireland"},{"name":"Florida Institute for Human and Machine Cognition, Pensacola, FL, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"100","reference":[{"issue":"4","key":"r1","series-title":"Sports Medicine,","doi-asserted-by":"publisher","first-page":"217","DOI":"10.2165\/00007256-199826040-00002","article-title":"Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine","volume":"26","author":"Atkinson, G.","year":"1998","unstructured":"Atkinson, G., & Nevill, A.M. 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