engleski

Should We Observe Standing- And Running- Vertical-Jumps As Unique Or Separated Qualities For High Level Basketball Players?

Purpose: Vertical jumping is important capacity in basketball, but studies mostly observed jumps performed from standing position (STAND-VJ). Meanwhile, runningvertical jumps (RUN-VJ) are rarely examined, and there is no study which systematically observed associations between STAND-VJ and RUN- VJ in basketball. The aim of this study was to evidence associations which may exist between STAND-VJ and RUN-VJ in high-level basketball players, separated for position played in game. Methods: The sample of participants included 93 basketball players (age: 21.8±3.9 years ; body mass: 89.1±11.1 ; body height: 194.4±8.1 cm), involved at highest national competitive levels (1st and 2nd Division). Participants were divided into three playing positions: Guards (N = 43), Forwards (N = 19), and Centers (N = 31). The variables included three STAND-VJ performances: countermovement jump (CMJ), drop-jump (DROPJ), and 6-consecutive-vertical-jumps ; and four RUN-VJ performances: layup-shot-jumps from dominant- (LUP-D), and non-dominant leg (LUP- ND), maximal running vertical jump from dominant (MAXR-D), and non-dominant leg (MAXRND). The Pearson’s correlation, and factor analysis with subsequent Varimax rotation were calculated to determine associations between jumping tests. Analyses were stratified by playing position. Results: Reliability of all tests was appropriate to high, with ICC values ranging from 0.80 (for LUP-ND), up to 0.92 (for CMJ and MAXR-D). Pearson’s correlation coefficients among STAND-VJ and RUN-VJ were lowest in Guards (r: 0.34-0.44), followed by Forwards (r: 0.21-0.75), and Centers (r: 0.54-0.69). Factor analysis calculated for Guards identified two independent latent dimensions of standingand (ii) running-jump-capacity (Factor Variance: 3.47 and 1.49, respectively). For Forwards, two factors were also identified, and the first-one was correlated with CMJ, DROPJ, MAXR-D and LUP-D (Factor Variance: 3.07), and the second-one correlated to MAX-ND and LUP-ND (Factor Variance: 2.42). For Centers, one significant latent dimension was extracted, with similar correlations of all jumping tests with factor component (Factor Variance: 5.03). 375 Conclusion: Results indicate necessity of differential approach in conditioning of standing- and running-vertical- jumping- performances for playing positions in basketball. For Guards and Forwards separated conditioning of standing- and runningjumps is needed. Meanwhile, it seems that standing- and running-jumping-performances for Centers may be developed simultaneously.

testing, conditioning, jumping abilities, basketball

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