{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T15:54:19Z","timestamp":1792598059217,"version":"4.5.0"},"reference-count":6,"publisher":"Human Kinetics","issue":"11","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,11,1]]},"abstract":"<jats:p>\n                    This letter highlights key methodological concerns regarding the use of running power in mountain running analysis. The estimation of critical power from nonmaximal, race-derived efforts using a 2-point model may lead to inaccurate critical power and\n                    <jats:italic>W<\/jats:italic>\n                    \u2032 values, affecting derived intensity domains. Additionally, walking\u2013running transitions act as a confounding factor, as power metrics underestimate the metabolic cost of walking. Finally, the validity of running power during downhill running is limited due to the dissociation between mechanical power and metabolic demand, and the greater influence of neuromuscular factors. These limitations suggest that running power should be interpreted cautiously as a proxy for physiological intensity in mountain running.\n                  <\/jats:p>","DOI":"10.1123\/ijspp.2026-0286","type":"journal-article","created":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T17:28:27Z","timestamp":1788370107000},"page":"1219-1220","source":"Crossref","is-referenced-by-count":0,"title":["Comment on Rodr\u00edguez-Medina and Rodr\u00edguez-Marroyo: Methodological Concerns Regarding Running Power Validity in Mountain Running Championship Analysis"],"prefix":"10.1123","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0588-0871","authenticated-orcid":true,"given":"Diego","family":"Ja\u00e9n-Carrillo","sequence":"first","affiliation":[{"name":"Department of Sport Science, University of Innsbruck, Innsbruck, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"100","reference":[{"key":"r1","series-title":"Int J Sports Physiol Perform","doi-asserted-by":"publisher","DOI":"10.1123\/ijspp.2025-0561","article-title":"Running power analysis of a world champion: a case study from the Spanish vertical, European ultra, and world trail championships","author":"Rodr\u00edguez-Medina J","unstructured":"Rodr\u00edguez-Medina J, Rodr\u00edguez-Marroyo JA. Running power analysis of a world champion: a case study from the Spanish vertical, European ultra, and world trail championships. Int J Sports Physiol Perform. Published online April 29, 2026. doi:10.1123\/ijspp.2025-0561"},{"issue":"7","key":"r2","series-title":"Int J Sports Physiol Perform","doi-asserted-by":"publisher","first-page":"1111","DOI":"10.1123\/ijspp.2022-0069","article-title":"9\/3-minute running critical power test: mechanical threshold location with respect to ventilatory thresholds and maximum oxygen uptake","volume":"17","author":"Ruiz-Alias SA","year":"2022","unstructured":"Ruiz-Alias SA, Olaya-Cuartero J, \u00d1ancupil-Andrade AA, Garc\u00eda-Pinillos F. 9\/3-minute running critical power test: mechanical threshold location with respect to ventilatory thresholds and maximum oxygen uptake. Int J Sports Physiol Perform. 2022;17(7):1111\u20131118. doi:10.1123\/ijspp.2022-0069"},{"issue":"2","key":"r3","series-title":"J Strength Cond Res","doi-asserted-by":"publisher","first-page":"584","DOI":"10.1519\/JSC.0000000000002977","article-title":"Methodological approaches and related challenges associated with the determination of critical power and W","volume":"33","author":"Muniz-Pumares D","year":"2019","unstructured":"Muniz-Pumares D, Karsten B, Triska C, Glaister M. Methodological approaches and related challenges associated with the determination of critical power and W. J Strength Cond Res. 2019;33(2):584\u2013596. doi:10.1519\/JSC.0000000000002977"},{"issue":"9","key":"r4","series-title":"Sports","doi-asserted-by":"publisher","first-page":"294","DOI":"10.3390\/sports13090294","article-title":"Mechanical running power and energy expenditure in uphill and downhill running","volume":"13","author":"Gravina-Cognetti F","year":"2025","unstructured":"Gravina-Cognetti F, Chaverri D, Planas A, et\u00a0al. Mechanical running power and energy expenditure in uphill and downhill running. Sports. 2025;13(9):294. doi:10.3390\/sports13090294"},{"issue":"1","key":"r5","series-title":"J Sci Med Sport","doi-asserted-by":"publisher","first-page":"85","DOI":"10.1016\/j.jsams.2020.06.004","article-title":"Physiological factors determining downhill vs uphill running endurance performance","volume":"24","author":"Lemire M","year":"2021","unstructured":"Lemire M, Hureau TJ, Favret F, et\u00a0al. Physiological factors determining downhill vs uphill running endurance performance. J Sci Med Sport. 2021;24(1):85\u201391. doi:10.1016\/j.jsams.2020.06.004"},{"issue":"7","key":"r6","series-title":"J Sports Sci","doi-asserted-by":"publisher","first-page":"815","DOI":"10.1080\/02640414.2020.1847502","article-title":"High-intensity downhill running exacerbates heart rate and muscular fatigue in trail runners","volume":"39","author":"Lemire M","year":"2021","unstructured":"Lemire M, Remetter R, Hureau TJ, et\u00a0al. High-intensity downhill running exacerbates heart rate and muscular fatigue in trail runners. J Sports Sci. 2021;39(7):815\u2013825. doi:10.1080\/02640414.2020.1847502"}],"container-title":["International Journal of Sports Physiology and Performance"],"original-title":[],"link":[{"URL":"https:\/\/journals.humankinetics.com\/view\/journals\/ijspp\/21\/11\/article-p1219.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.humankinetics.com\/downloadpdf\/journals\/ijspp\/21\/11\/article-p1219.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/journals.humankinetics.com\/downloadpdf\/journals\/ijspp\/21\/11\/article-p1219.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T15:15:46Z","timestamp":1792595746000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.humankinetics.com\/view\/journals\/ijspp\/21\/11\/article-p1219.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,11,1]]},"references-count":6,"journal-issue":{"issue":"11"},"URL":"https:\/\/doi.org\/10.1123\/ijspp.2026-0286","relation":{},"ISSN":["1555-0265","1555-0273"],"issn-type":[{"value":"1555-0265","type":"print"},{"value":"1555-0273","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,11,1]]}}}