{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T13:01:43Z","timestamp":1785416503921,"version":"3.56.0"},"reference-count":30,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2026,5,17]],"date-time":"2026-05-17T00:00:00Z","timestamp":1778976000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100010790","name":"Erasmus+","doi-asserted-by":"publisher","award":["Ref.622085-EPP-1-2020-1-ES-SPO-SCP"],"award-info":[{"award-number":["Ref.622085-EPP-1-2020-1-ES-SPO-SCP"]}],"id":[{"id":"10.13039\/501100010790","id-type":"DOI","asserted-by":"publisher"}]},{"award":["Ref.622085-EPP-1-2020-1-ES-SPO-SCP"],"award-info":[{"award-number":["Ref.622085-EPP-1-2020-1-ES-SPO-SCP"]}],"id":[{"id":"https:\/\/ror.org\/01v2m4n16","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Departamento de Ciencia, Universidad y Sociedad del Conocimiento, from the Gobierno de Arag\u00f3n","award":["S08_26R"],"award-info":[{"award-number":["S08_26R"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JFMK"],"abstract":"<jats:p>Background: Bicycle Motocross (BMX) performance is strongly influenced by the start phase, which requires rapid force and power production to achieve optimal race posi-tioning; however, the relationship between lower-body power and sport-specific start performance remains insufficiently investigated. Objectives: The aim of this cross-sectional study was to assess lower-body muscular performance and analyze its relationship with start performance in international BMX riders. Methods: Ten international-level BMX riders (n = 10) completed a testing battery including squat jump and countermovement jump, force\u2013velocity profile assessment, and a Wingate test preceded by 5 s maximal sprints to determine peak power (PP1, PP2), peak power during the 30 s Wingate test, and mean power. A sport-specific start test was performed on a BMX ramp, with time over the first 15 m recorded using photocell timing gates. Results: StartGate 15 m time showed a large negative correlation with PP2 (r = \u22120.800, 95% CI: \u22120.95 to \u22120.33, p = 0.05), whereas no significant correlations were observed with vertical jump performance or Power Mean Wingate. Strong correlations were observed among laboratory-based power variables. Conclusions: These findings suggest that short-duration peak cycling power may be associated with BMX start performance. However, given the small sample size and the borderline p-value, this relationship should be interpreted with caution. Sport-specific start testing may provide relevant information for performance assessment and training monitoring in international BMX riders.<\/jats:p>","DOI":"10.3390\/jfmk11020198","type":"journal-article","created":{"date-parts":[[2026,5,18]],"date-time":"2026-05-18T10:25:16Z","timestamp":1779099916000},"page":"198","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Relationship Between Lower-Body Power and Sport-Specific Start Performance in International-Level BMX Riders"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2840-9882","authenticated-orcid":false,"given":"Noel","family":"Marcen-Cinca","sequence":"first","affiliation":[{"name":"Faculty of Health Sciences, Universidad San Jorge, Villanueva de G\u00e1llego, 50830 Zaragoza, Spain"},{"name":"Valor A Research Group, Health Sciences Faculty, Universidad San Jorge, 50830 Zaragoza, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8770-2106","authenticated-orcid":false,"given":"Pablo Jes\u00fas","family":"Bascuas","sequence":"additional","affiliation":[{"name":"Faculty of Health Sciences, Universidad San Jorge, Villanueva de G\u00e1llego, 50830 Zaragoza, Spain"},{"name":"Valor A Research Group, Health Sciences Faculty, Universidad San Jorge, 50830 Zaragoza, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0879-1209","authenticated-orcid":false,"given":"Juan","family":"Rabal-Pelay","sequence":"additional","affiliation":[{"name":"Faculty of Health Sciences, Universidad San Jorge, Villanueva de G\u00e1llego, 50830 Zaragoza, Spain"},{"name":"Valor A Research Group, Health Sciences Faculty, Universidad San Jorge, 50830 Zaragoza, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1699","DOI":"10.1080\/17461391.2020.1859622","article-title":"Determinant Physiological Factors of Simulated BMX Race","volume":"21","author":"Daneshfar","year":"2020","journal-title":"Eur. 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