Designing and Manufacturing of a Hexagonal Device to Assess the Reaction Time of Sitting Volleyball Athletes

Document Type : Original research papers


1 Depattment of Motor control, faculty of physical education and sport science, university of tabriz, tabriz, iran

2 Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Tabriz, Tabriz, Iran


Sitting volleyball is one of the most popular Paralympic sports, which requires special movement and physical fitness factors according to the rules of the race. Reaction time is one of the most important physical fitness factors for players of sitting volleyball. Mostof the devices and tests used to evaluate this factor are common among healthy athletes. However, in para athlete sports such as sitting volley, there are limited devices for evaluation and conditioning them. The specialization of physical fitness tests and devices for para athletes in each sport has an important role in the evaluating, preparing and success of the teams. In sitting volleyball, it is very important for athletes to move their body at different directions to reach the ball and have a suitable reaction. So, the aim of this study was to design and manufacture a system which could evaluate the reaction time of sitting volley players at 6 different directions. The hexagonal reaction time measuring system is a device that measures the reaction time by using six sensors located on the floor and a lamp panel in front of the athlete. When the lamp of each sensor turns on, the athlete should touch it in the shortest time by pushing himself at the given direction. This time period is measured and displayed as the reaction time.


Main Subjects

1. Wieczorek J, Wieczorek A, Jadczak Ł, Śliwowski R, Pietrzak M. Physical activity and injuries and overstraining syndromes in sitting volleyball players. Studies in Physical Culture & Tourism. 2007;14.
2. Danis D, Mikuła W. Injuries and overstraining syndromes in wheelchair basketball players. Medycyna Sportowa. 1999;12(101):15-7.
3. Di Russo F, Bultrini A, Brunelli S, Delussu AS, Polidori L, Taddei F, Traballesi M, Spinelli D. Benefits of sports participation for executive function in disabled athletes. Journal of Neurotrauma. 2010;27(12):2309-19.
4. Hutzler Y, Chacham-Guber A, Reiter S. Psychosocial effects of reverse-integrated basketball activity compared to separate and no physical activity in young people with physical disability. Research in developmental disabilities. 2013; 34(1):579-87.
5. Akasaka K, Takakura Y, Okuma O, Kusano S, Suyama T, Yamamoto M, Oi N, Takahashi K, Kunisawa Y. SF-36 Health survey in disabled sitting volleyball players in Japan. Journal of Physical Therapy Science. 2003;15(2):71-3.
6. Vute R. Scoring skills performances of the top international men's sitting volleyball teams. Acta Universitatis Palackianae Olomucensis. Gymnica. 1999;29(2).
7. Vute R. Teaching and coaching volleyball for the disabled:foundation course handbook (2nd Ed), Faculty of Education,University of Ljubljana, Ljubljana, 2009.
8. Jeoung B. Relationship between sitting volleyball performance and field fitness of sitting volleyball players in Korea. Journal of Exercise Rehabilitation. 2017;13(6):647.
9. Molik B, Morgulec-Adamowicz N, Marszałek J, Kosmol A, Rutkowska I, Jakubicka A, Kaliszewska E, Kozłowski R, Kurowska M, Ploch E, Mustafins P. Evaluation of game performance in elite male sitting volleyball players. Adapted Physical Activity Quarterly. 2017;34(2):104-24.
10. Marszalek J, Molik B, Gomez MA, Skučas K, Lencse-Mucha J, Rekowski W, Pokvytyte V, Rutkowska I, Kaźmierska-Kowalewska K. Relationships between anaerobic performance, field tests and game performance of sitting volleyball players. Journal of human kinetics. 2015;48(1):25-32.
11. Nuri L, Shadmehr A, Ghotbi N, Attarbashi Moghadam B. Reaction time and anticipatory skill of athletes in open and closed skill-dominated sport. European journal of sport science. 2013;13(5):431-6.
12. Mudric M, Cuk I, Nedeljkovic A, Jovanovic S, Jaric S. Evaluation of Video-based method for the measurement of reaction time in specific sport situation. International Journal of Performance Analysis in Sport. 2015;15(3):1077-89.
13.Brisswalter J, Arcelin R, Audiffren M, Delignieres D. Influence of physical exercise on simple reaction time: effect of physical fitness. Perceptual and motor skills. 1997;85(3):1019-27.
14. Jafarnezhadgero A, Fatollahi A, Amirzadeh N, Siahkouhian M, Granacher U. Ground reaction forces and muscle activity while walking on sand versus stable ground in individuals with pronated feet compared with healthy controls. PloS one. 2019;14(9):e0223219.
15. Jafarnezhadgero A, Madadi-Shad M, McCrum C, Karamanidis K. Effects of Corrective Training on Drop Landing Ground Reaction Force Characteristics and Lower Limb Kinematics in Older Adults With Genu Valgus: A Randomized Controlled Trial. Journal of Aging & Physical Activity. 2019;27(1): 9-17.
16. Jafarnezhadgero A, Alavi-Mehr SM, Granacher U. Effects of anti-pronation shoes on lower limb kinematics and kinetics in female runners with pronated feet: The role of physical fatigue. PloS one. 2019;14(5):e0216818.