Povezanost odnosa sila-hitrost-moč med različnima metodama dodatnega obremenjevanja z izbranimi testi agilnosti in hitrosti spremembe smeri : magistrsko delo

Čačulovič, Patricija (author), Šarabon, Nejc (mentor)

Namen naloge je bil ugotoviti povezavo med izhodnimi spremenljivkami (največja teoretična sila (F_0), največja teoretična hitrost (v_0) in največja izhodna moč (P_max)) odnosa sila-hitrost-moč s splošnim in specifičnim testom agilnosti ter hitrosti spremembe smeri. V raziskavo je bilo vključenih 39 karateistov slovenske in avstrijske članske reprezentance (starost: 19,3 ± 4,1 let; višina: 173,2 ± 8,2 m; telesna masa: 65,4 ± 10,6 kg). Za vrednotenje agilnosti smo izvedli T-test in specifičen karate test na kratki (K-KR) in dolgi razdalji (K-DR) ter hitrost spremembe smeri pri 90° (HSS90°) in 180° (HSS180°). K-KR, K-DR, HSS90 in HSS180 so bili vrednoteni z dominantno (D) in nedominantno (ND) nogo. Simetrijski indeks je pokazal rahlo asimetričnost (1,9 % - 8,2 %). Skladnost med preferenčnostjo in dominantnostjo je bila zmerna (κ = 0,43-0,52). Za vrednotenje jakosti in moči smo izvedli navpični skok z nasprotnim gibanjem (SNG) z dodanimi bremeni in polčep pri masni inercijski obremenitvi (MIO). Pri SNG so dosegali višje vrednosti (F_0 = 29,9 ± 4,3 N; v_0 = 4,7 ± 1,5 m/s; P_max = 34,5 ± 7,4 W/kg) v primerjavi z MIO (F_0 = 27,0 ± 4,3 N/kg; v_0 = 2,0 ± 0,4 m/s; P_max = 13,3 ± 2,1 W/kg). Povezave med SNG-F_0 ter HSS90, HSS180 in T-test so šibke do zmerne (r = -0,39 do -0,58; p < 0,05), med SNG-v_0 in HSS180 ter T-testom sta šibki (r = 0,32-0,37; p < 0,05), med MIO-P_maxin K-KR je šibka (r = -0,37; p < 0,05). Z večstopenjsko multiplo regresijo smo preučevali napovedno moč F_0, v_0 in P_max, pri napovedovanju testov agilnosti ter hitrosti spremembe smeri. Največji delež variance je znašal za HSS180 (R^2 = 33,5 %) in T-test (R^2 = 27,7 %), malo manj za HSS90 (R^2 = 15,4 %) in K-KR (R^2 = 13,8 %). Najpomembnejše spoznanje raziskave je relativna nizka povezanost med izhodnimi spremenljivkami odnosa sila-hitrost-moč ter izbranimi testi agilnosti in hitrosti spremembe smeri.

• Language: Slovenian
• Keywords: inercija, skok z nasprotnim gibanjem, karate, športna borba, specifični karate test
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FŠ - Faculty of Sport
• Year: 2021
• PID: 20.500.12556/RUL-125419
• COBISS.SI-ID: 57454851
• Publication date in RUL: 16.03.2021

Secondary language

• Language: English
• Title: Relationship between force-velocity-power profiles obtained by two different types of overload and their relation to agility and change of direction performance

Abstract

The purpose of the study was to determine the relationship between output variables (teoretical maximal force (F_0), theoretical maximal velocity (v_0) and maximal power output (P_max)) of force-velocity-power relationship with general and specific agility and change of direction tests. The study included 39 karate athletes from Slovenian and Austrian national teams (age: 19,3 ± 4,1 years; height: 173,2 ± 8,2 m; weight: 65,4 ± 10,6 kg). To evaluate agility we performed a T-test and a specific karate test at short (K-SD) and long distance (K-LD) and the change of direction at 90° (COD90°) and 180° (COD180°). K-SD, K-LD, COD90 and COD180 were evaluated with dominant (D) and nondominant (ND) leg. The symmetric index showed a slight asymmetry (1,9 % - 8,2 %). The level of agreement between preference and dominance was moderate (κ = 0,43-0,52). To evaluate strength and power, we performed a vertical counter movement jump (CMJ) with additional loads and a flywheel squat (FW). Greater values were achieved for CMJ (F_0 = 29,9 ± 4,3 N; v_0 = 4,7 ± 1,5 m/s; P_max = 34,5 ± 7,4 W/kg) compared to FW (F_0 = 27,0 ± 4,3 N/kg; v_0 = 2,0 ± 0,4 m/s; P_max = 13,3 ± 2,1 W/kg). The relationship between CMJ-F_0 and COD90, COD180 and T-test were weak to moderate (r = -0,39 to -0,58; p < 0,05), between CMJ-v_0, COD180 and T-test were weak (r = 0,32–0,37; p < 0,05), among FW-P_max and K-SD was also weak (r = -0,37; p < 0,05). The stepwise multiple regression was used to study the predictive power of F_0, v_0 and P_max, when predicting agility tests and change of direction tests. Best predictors were COD180 (R^2 = 33,5 %) and T-test (R^2 = 27,7 %), slightly less COD90 (R^2 = 15,4 %) and K-SD (R^2 = 13,8 %). The most important finding of the research is relatively low correlation between the output variables of the force-velocity-power relationship, agility and change of direction performance.

• Keywords: flywheel, counter movement jump, karate, kumite, specific karate test