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A SIMPLE MATHEMATICAL MODEL FOR ESTIMATING GENERAL JUMPING PREPAREDNESS OF SENIOR FEMALE VOLLEYBALL PLAYERS
Faculty of Sport and Physical Education, University of Belgrade , Belgrade , Serbia
Faculty of Sport and Physical Education, University of Belgrade , Belgrade , Serbia
Faculty of Sport and Physical Education, University of Belgrade , Belgrade , Serbia
Faculty of Sport and Physical Education, University of Belgrade , Belgrade , Serbia
Abstract
The aim of this paper is to define a simple mathematical model for estimating general jumping preparedness of senior female volleyball players (SCOREpoint) by applying a set of 7 variables measured by standardized tests within the field measuring conditions. The sensitivity of this model is determined on the basis of achieved points and differences in general jumping preparedness among female volleyball players competing in elite international competitions, elite national competitions, state-level and regional-level competitions. Applied battery of tests has cumulatively explained 80.64% of the total variant of measurement. The defined model explained the criterion of general jumping preparedness of senior female volleyball players at the level of 100% (Adj. R 2 = 1.000), and with the minor error in prediction (Std. Err. Est. = 0.003 SCOREpoint points). The obtained model has the following form: SCOREpoint = -86.762 + (0.4595 · CMJARM + 0.5158 · CMJNOARM + 0.4620 · SJCONARM + 0.4812 · SJCONCNOARM + 0.5431 · CMBJ + 0.5626 · SJCONCBJ + 0.138 · SLJ. The defined model has a satisfactory level of discrimination and it is proposed for further practical use.
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