The effect of assisted and normal jumping on vertical jump, 20 m sprint and agility results during the competitive season in amateur volleyball players

This study analyzed volleyball players vertical jump, 20 m sprint and agility results in competetive season after applied assisted and normal jumping training methods. The subjects were amateur volleyball players (n=12), aged 23±6 years. The study was conducted in 2017 November - December and consisted of two stages. The first part of study, which lasted 3 weeks, took place in the development of jumping ability using normal bodyweight jumping training method. Second part of study were divided in two groups: the experimental (n=6) and control (n=6). Athletes from the experimental group two weeks used assisted jumping training method. At that time control group continued normal jumping training. The testing procedure took place before and after each part of study. The jump height was measured using the contact jump height platform and the „Vertec“ equipment, to measure 20 m sprint and agility time were used manual timer \"Karrimor\". The object of study – assisted and normal jump training methods effect to amateur volleyball players jump height, 20 m sprint and agility results during the competitive season. The aim of this study – to determine the assisted and normal jump training methods effect to amateur volleyball players vertical jump, 20 m sprint and agility results during the competitive season. Conclutions: 1. Normal jumping training method improved volleyball players jump height, but the results of 20 m sprint and agility have not changed. 2. Assisted jumping training method did not improved jump height, 20 m sprint and agility results, but volleyball players significantly improved jump take-off velocity