472 KB32 KB199220252025Sašek, MaticŠarabon, NejcVolk, Nicola Reinerštevilka:3letnik:31str. 170-181DOI:10.52165/kinsi.31.3.170-181ISSN:1318-2269COBISSID_HOST:263232771URN:URN:NBN:SI:doc-ZL891ZGTenZaložba Univerze v LjubljaniKinesiologia Slovenicaresistanceresisted sprintspeed assessmentsprint performancesprinterska zmogljivostsprinti proti uporuuporvrednotenje hitrostiWithin-session reliability and comparison in resisted sprint performance with the 1080 Sprint between belt and harness attachment points| Znotrajobiskovna ponovljivost in primerjava v zmogljivosti med izvedbo sprinta proti uporu z napravo 1080 sprint med izvedbo s pasom in oprtjo|The application of resistance over the shoulder or hips during resisted sprints could influence performance outcomes but has not been thoroughly investigated. This study examined the within-session reliability of sprint performance measures and compared the outcomes of 1080 Sprint device between belt (hips) and harness (shoulders) attachment. Twelve student-athletes completed three 20 m sprints with resistance equivalent to 25% of body mass (14.0 to 24.7 kg). Sprint split times (5 m, 10 m, 15 m, 20 m), peak velocity, and distance at peak velocity were recorded with 1080 Sprint. Within-session reliability was assessed using intraclass correlation coefficients (ICC3.1) and coefficients of variation (CV), while differences in performance were analysed using paired t-tests and effect sizes (ES). Reliability was excellent for all variables (ICC3.1? 0.93; CV ? 3.08 %) except distance at peak velocity, which showed poor reliability (ICC3.1? 0.32; CV ? 17.2 %). Sprint times and peak velocity were faster with the belt attachment (ES ? 0.93), while peak velocity was reached earlier with the harness attachment (ES = 0.65). Both attachment points provided reliable measurements, but the belt consistently resulted in faster 20 m sprint performance. Coaches and practitioners should consider these differences when assessing resisted sprint performance or prescribing training to ensure consistent and individualized loading strategiesNamestitevenakega upora preko ramen ali bokov med sprinti proti uporu lahko vpliva na zmogljivost. Namen te študije je bil preučiti ponovljivost meritev zmogljivosti sprinta znotraj obiska in primerjati hitrost sprinta proti uporu spritrditvijo prekopasu(na bokih) inpreko oprti(na ramenih).Dvanajst študentov-športnikov je izvedlo tri sprinte proti uporu25 % telesne mase (14,0 do 24,7 kg)na razdalji20 m.Vmesni časi sprinta(na 5 m, 10 m, 15 m, 20 m), največja hitrost ter razdalja pri največji hitrosti so bili izmerjeniz napravo 1080 Sprint. Znotrajobiskovnazanesljivost je bila ocenjena z intraklasnim koeficientomkorelacije (ICC3.1) in koeficientom variance(CV), medtem ko so bile razlike v izvedbi analizirane s t-testi za odvisne vzorce. Ponovljivostje bila odlična za vse spremenljivke (ICC3.1? 0.93; CV ? 3.08 %) razen za razdaljo pri največji hitrosti, ki je pokazala slabo ponovljivost(ICC3.1? 0.32; CV ? 17.2 %). Vmesni časi in največja hitrost so bili hitrejšispritrditvijoprekopasu(ES ? 0.93), medtem ko je bila največja hitrost dosežena prej spritrditvijopreko oprti(ES = 0.65). Obe pritrdišči sta zagotavljali zanesljive meritve, vendar je pas dosledno omogočal hitrejšo izvedbo sprinta na 20 m. Trenerji in strokovnjaki naj te razlike upoštevajo pri vrednotenju zmogljivosti sprinta protiuporuali predpisovanjuvadbe, da zagotovijokonsistentne strategijeobremenjevanjaTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za šport