{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T04:56:28Z","timestamp":1784696188746,"version":"3.55.0"},"reference-count":35,"publisher":"Human Kinetics","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,4,1]]},"abstract":"<jats:p><jats:italic><jats:bold>Purpose<\/jats:bold>:<\/jats:italic> To examine the association between reactive strength index (RSI) and metabolic cost of running (MCr) in master athletes. We hypothesized that individuals with a higher RSI would exhibit a lower MCr, that both variables would be associated, and that age would moderate this relationship. <jats:italic><jats:bold>Methods:<\/jats:bold><\/jats:italic> Forty-five male master athletes participated to this study. A median split was performed to constitute 2 age groups (group 1, 47.7 [1.7]\u00a0y old; group 2, 56.3 [4.6]\u00a0y old). Participants underwent a single 45-minute session during which RSI was assessed with drop jumps, and MCr, during a continuous exercise of submaximal intensity performed on a treadmill. <jats:italic><jats:bold>Results:<\/jats:bold><\/jats:italic> A small negative association was found between net MCr and RSI in the overall sample (RSI mean <jats:italic>r<\/jats:italic>\u2009=\u2009\u2212.38, <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05; RSI max <jats:italic>r<\/jats:italic>\u2009=\u2009\u2212.38, <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05). Group 1 exhibited a lower net MCr (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.01, <jats:italic>d<\/jats:italic>\u2009=\u2009\u22120.84) and higher RSI (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.01, <jats:italic>d<\/jats:italic>\u2009&gt;\u20090.82) than group 2. However, the association between the 2 measures was verified specifically in group 2 (RSI from a 20-cm drop jump, <jats:italic>r<\/jats:italic>\u2009=\u2009\u2212.53, <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.01; RSI mean, <jats:italic>r<\/jats:italic>\u2009=\u2009\u2212.50, <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05; RSI maximum, <jats:italic>r<\/jats:italic>\u2009=\u2009\u2212.57, <jats:italic>P<\/jats:italic>\u2009&lt;\u2009.01). <jats:italic><jats:bold>Conclusions:<\/jats:bold><\/jats:italic> RSI is associated with net MCR in master athletes, particularly in older participants. Additional intervention studies are now required to further explore this association.<\/jats:p>","DOI":"10.1123\/ijspp.2024-0291","type":"journal-article","created":{"date-parts":[[2025,2,12]],"date-time":"2025-02-12T19:58:18Z","timestamp":1739390298000},"page":"524-529","source":"Crossref","is-referenced-by-count":3,"title":["Association Between Reactive Strength Index and Metabolic Cost of Running in Male Master Athletes"],"prefix":"10.1123","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4243-2413","authenticated-orcid":true,"given":"Maxence","family":"Tanneau","sequence":"first","affiliation":[{"name":"Faculty of Sport Sciences, Laboratory MOVE (UR 20296), University of Poitiers, Poitiers, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4868-7986","authenticated-orcid":true,"given":"Nicolas","family":"Berryman","sequence":"additional","affiliation":[{"name":"Department of Human Kinetics, University of Quebec at Montreal (UQAM), Montreal, QC, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8143-9132","authenticated-orcid":true,"given":"I\u00f1igo","family":"Mujika","sequence":"additional","affiliation":[{"name":"Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country, Leioa, Basque Country, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6473-1780","authenticated-orcid":true,"given":"Anh P.","family":"Nguyen","sequence":"additional","affiliation":[{"name":"Institut de Recherche Exp\u00e9rimentale et Clinique, Neuromusculoskeletal Lab, Universit\u00e9 Catholique de Louvain, Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-4910-644X","authenticated-orcid":true,"given":"Dar\u00edo","family":"Cappa","sequence":"additional","affiliation":[{"name":"Laboratory of Physiology, IEF Mendoza, Mendoza, Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeanne","family":"Barraud","sequence":"additional","affiliation":[{"name":"Faculty of Sport Sciences, Laboratory MOVE (UR 20296), University of Poitiers, Poitiers, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2530-2676","authenticated-orcid":true,"given":"Laurent","family":"Bosquet","sequence":"additional","affiliation":[{"name":"Faculty of Sport Sciences, Laboratory MOVE (UR 20296), University of Poitiers, Poitiers, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"100","reference":[{"issue":"11","key":"r1","series-title":"Sports Med","doi-asserted-by":"publisher","first-page":"675","DOI":"10.2165\/00007256-200232110-00002","article-title":"Methods to determine aerobic endurance","volume":"32","author":"Bosquet L","year":"2002","unstructured":"Bosquet L, Leger L, Legros P. 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