1University of Montenegro, Faculty for Sport and Physical Education, Niksic, Montenegro
Meta-Analyze of the Scientific Papers on the Sport Balls Repulsion Depending on the Air Pressure within
The main goal of the research was to make one Meta-analyze of original scientific papers, who dealt with the identification on the sport balls repulsion depending on the pressure within. Sport balls of standard dimensions was released on the flat solid surface from the height of nine meters for four times. At the first release the air in the sport balls was under prescribed pressure. At the second release the pressure in the pumped sport balls is reduced by 5%, at the third reduced by an additional 5%, at the fourth reduced by another 5%. The setting of the experiment was carried by cinema shooting of free fall of the prescribed sport balls and a series of rebounds after the rejection of solid surfaces. One can conclude that the distance crossed and the total duration of four successive bouncing mostly dependent on inner pressure. In this study, the initial speed of a sport ball were unchanged and only inner pressures were changed. It was determined how much the height of the rebound is reduced and the duration of the rebound, respectively, depending on the reduction of inner pressure. This Meta-analyze shows that the initial speed of the ball can be increased by increasing the inner pressure in the balls.
Meta-Analysis, Pressure in Sport Balls, Repulsion
Bjelica, D., & Gardašević, J. (2018). Volleyball elastic properties depending on ball pressure [Elastična svojstva odbojkaške lopte u zavisnosti od pritiska vazduha u njoj]. Sport Science, 11(1), 45-51.
Bjelica, D., Vukotic, M., & Gardasevic, J. (2018). Repulsions ball in table tennis [Repulzija lopte u stonom tenisu]. Journal of Anthropology of Sport and Physical Education, 2(4), 15-19. https://doi.org/10.26773/jaspe.181003
Bjelica, D., Bubanja, M., & Gardasevic, J. (2018). The dependence of repulsion tennis ball from the air pressure in it [Zavisnost repulzije lopte u tenisu od pritiska vazduha u njoj]. Journal of Anthropology of Sport and Physical Education, 2(4), 77-82. https://doi.org/10.26773/jaspe.181014
Bjelica, D., Milosevic, Z., Talovic, M., & Bajramovic, I. (2018). Repulsion of the futsal ball depending on the pressure in it [Repulzija lopte za futsal u zavisnosti od pritiska vazduha u njoj]. Sport Mont, 16(2), 61-67. https://doi.org/10.26773/smj.180611
Bjelica, D., Popovic, S., Tanase, G.D., & Gardasevic, J. (2017). Dependence of female ball in handball repulsion on the pressure within this sport [Zavisnost repulzije rukometne lopte za žene u u odnosu na pritisak vazduha u njoj]. Acta Kinesiologica, 11(1), 67-72.
Bjelica, D., Popović, S., Gardašević, J., & Krivokapić, D. (2016). Dependence of Football Repulsion on the Pressure within This Sport [Zavisnost repulzije fudbalske lopte u odnosu na pritisak vazduha lopte u tom sportu]. Journal of Physical Education and Sport, 16(2), 452-458. https://doi.org/10.7752/jpes.2016.02069
Bjelica, D., Popović, S., & Gardašević, J. (2016a). Dependence of basketball repulsion on the pressure within this sport [Zavisnost repulzije košarkaške lopte u odnosu na pritisak vazduha u njoj]. Journal of Physical Education and Sport, 16(1), 125-131. https://doi.org/10.7752/jpes.2016.01021
Bjelica, D., Popović, S., & Gardašević, J. (2016b). Pressure dependence of handball repulsion within this sport [Pritisak vazduha u rukometnoj lopti i zavisnost repulzije lopte od njega u tom sportu]. Journal of Physical Education and Sport, 16(2), 1078-1083. https://doi.org/10.7752/jpes.2016.s2172
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