{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T17:34:52Z","timestamp":1793295292121,"version":"4.5.0"},"reference-count":25,"publisher":"Human Kinetics","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026]]},"abstract":"<jats:p>\n                    <jats:italic>\n                      <jats:bold>Purpose<\/jats:bold>\n                      :\n                    <\/jats:italic>\n                    This study quantified running pace and relative exercise intensity during a HYROX PRO MEN event by integrating laboratory-derived aerobic markers with competition data.\n                    <jats:italic>\n                      <jats:bold>Methods<\/jats:bold>\n                      :\n                    <\/jats:italic>\n                    Twenty-four male HYROX PRO MEN athletes (race time: 69:58 [5:05] min:s) completed a maximal incremental treadmill test to determine second ventilatory threshold (VT2), maximal aerobic speed (vVO\n                    <jats:sub>2<\/jats:sub>\n                    max), and maximal oxygen uptake (VO\n                    <jats:sub>2<\/jats:sub>\n                    max). Within 10 days, participants competed in the official HYROX Madrid 2025 event. Running speed was calculated for each of the eight 1-km segments and the Roxzone, as well as for the total running component, defined as the combined distance of run 1 to 8 and the Roxzone (8.70\u00a0km), and expressed in absolute terms (kilometers per hour) and relative to VT2 and vVO\n                    <jats:sub>2<\/jats:sub>\n                    max.\n                    <jats:italic>\n                      <jats:bold>Results<\/jats:bold>\n                      :\n                    <\/jats:italic>\n                    During laboratory testing, athletes reached a VO\n                    <jats:sub>2<\/jats:sub>\n                    max of 51.56 (5.00)\u00a0mL\u00b7kg\n                    <jats:sup>\u22121<\/jats:sup>\n                    \u00b7min\n                    <jats:sup>\u22121<\/jats:sup>\n                    (95% CI, 49.56 to 53.56), with VT2 and vVO\n                    <jats:sub>2<\/jats:sub>\n                    max occurring at 16.41 (0.87)\u00a0km\u00b7h\n                    <jats:sup>\u22121<\/jats:sup>\n                    (95% CI, 16.06 to 16.76), and 18.08\u00a0(0.81)\u00a0km\u00b7h\n                    <jats:sup>\u22121<\/jats:sup>\n                    (95% CI, 17.76 to 18.40), respectively. Competition running speed declined from 16.13 (0.97)\u00a0km\u00b7h\n                    <jats:sup>\u22121<\/jats:sup>\n                    (95% CI, 15.74 to 16.52) in run 1 to 13.58 (1.02)\u00a0km\u00b7h\n                    <jats:sup>\u22121<\/jats:sup>\n                    (95% CI, 13.17 to 13.99) in run 8, with the lowest speed in the Roxzone (10.52 [1.18]\u00a0km\u00b7h\n                    <jats:sup>\u22121<\/jats:sup>\n                    ; 95% CI, 10.05 to 10.99). Mean intensity, calculated across the 8 running segments and the Roxzone, corresponded to 84.13% (5.54%) of VT2 (95% CI, 82.66 to 87.10) and 76.33% (4.05%) of vVO\n                    <jats:sub>2<\/jats:sub>\n                    max (95% CI, 75.31 to 78.55).\n                    <jats:italic>\n                      <jats:bold>Conclusions<\/jats:bold>\n                      :\n                    <\/jats:italic>\n                    Running in HYROX PRO MEN is performed at submaximal intensities relative to VT2 and vVO\n                    <jats:sub>2<\/jats:sub>\n                    max and declines progressively across segments. Sustaining a higher relative intensity appears central to shorter total running time.\n                  <\/jats:p>","DOI":"10.1123\/ijspp.2026-0098","type":"journal-article","created":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T02:20:48Z","timestamp":1788488448000},"page":"1-8","source":"Crossref","is-referenced-by-count":0,"title":["Relative Running Intensity and Pacing During an Official HYROX PRO MEN Competition: The HYScience Study"],"prefix":"10.1123","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9721-2269","authenticated-orcid":true,"given":"Jorge","family":"Guti\u00e9rrez-Hell\u00edn","sequence":"first","affiliation":[{"name":"Faculty of Health Science, Institute of Health and Sport Sciences, Universidad Francisco de Vitoria, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-7359-6599","authenticated-orcid":true,"given":"Susana","family":"Alonso-Dom\u00ednguez","sequence":"additional","affiliation":[{"name":"Faculty of Health Science, Institute of Health and Sport Sciences, Universidad Francisco de Vitoria, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4275-7250","authenticated-orcid":true,"given":"Jaime","family":"Gil-Cabrera","sequence":"additional","affiliation":[{"name":"Department of Sports Sciences, Faculty of Medicine, Health and Sports, Universidad Europea de Madrid, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel","family":"Arazola-L\u00f3pez","sequence":"additional","affiliation":[{"name":"HYROX Spain, Madrid, Spain"},{"name":"Hybrid Program Fit, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario","family":"Sainz-P\u00e9rez","sequence":"additional","affiliation":[{"name":"HYPRO Hybrid Club and Hyprogram, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-4636-6876","authenticated-orcid":true,"given":"Clara","family":"Larnaudie-Faura","sequence":"additional","affiliation":[{"name":"Faculty of Health Science, Institute of Health and Sport Sciences, Universidad Francisco de Vitoria, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-8533-5780","authenticated-orcid":true,"given":"Mario","family":"Matias-L\u00f3pez","sequence":"additional","affiliation":[{"name":"Faculty of Health Science, Institute of Health and Sport Sciences, Universidad Francisco de Vitoria, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francisco Jos\u00e9","family":"Mart\u00edn-G\u00f3mez","sequence":"additional","affiliation":[{"name":"Department of Sports Sciences, Faculty of Medicine, Health and Sports, Universidad Europea de Madrid, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-7909-2021","authenticated-orcid":true,"given":"Arturo","family":"Franco-Andr\u00e9s","sequence":"additional","affiliation":[{"name":"Faculty of Health Science, Institute of Health and Sport Sciences, Universidad Francisco de Vitoria, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5785-984X","authenticated-orcid":true,"given":"Juan","family":"Del Coso","sequence":"additional","affiliation":[{"name":"Faculty of Health Science, Institute of Health and Sport Sciences, Universidad Francisco de Vitoria, Madrid, Spain"},{"name":"Sport Sciences Research Centre, Rey Juan Carlos University, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"100","reference":[{"issue":"2","key":"r1","series-title":"Res Q Exerc Sport","doi-asserted-by":"publisher","first-page":"266","DOI":"10.1080\/02701367.2025.2584226","article-title":"Hyrox\u00a9: a descriptive analysis of participation trends among over 275,000 athletes in the new fitness modality","volume":"97","author":"Fern\u00e1ndez-Navarrete I","year":"2025","unstructured":"Fern\u00e1ndez-Navarrete I, Ruiz-Alias SA, G\u00f3mez-Garc\u00eda M, Riquelme-Sebasti\u00e1n L, Garc\u00eda-Pinillos F. 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