Change of physical indicators of adolescent volleyball athletes

Objective – To assess the variation of physical indicators of adolescent volleyball athletes. 1. To assess the change of physical indicators of girls aged 8-12 who play volleyball. 2. To assess the change of physical indicators of boys aged 8-12 who play volleyball. 3. To determine the interfaces of physical indicators of boys and girls aged 8-12 who play volleyball. Methodology of the research – the research was carried out at the Jonava Physical Culture and Sports Center. Testing have been carried out twice, first testing of the research was in December, 2016 and the second one was carried out half a year later – in June. The research methods were based on EUROFITO mobility tests. In total, 7 tests were performed such as: muscle strength endurance tests – test of hanging, sit and lay down test, long jump test; tests of speed and agility - 10x5 test, taping test; equilibrium test; Flamingo test and flexibility test – sit and seek. Investigators were volleyball adolescent at Jonava Physical Education and Sports Center. 20 people (10 girls and 10 boys) agreed to participate in the study. The mean age of the girls was 8.9 ± 0.88. The average age of boys is 10.3 ± (0.82). Conclusions: 1. Physical characteristics of volleyball girls, such as endurance of the upper limbs, torso strength, limb movement speed, while flexibility and overall speed and agility, have improved, balance and sudden force have not changed. 2. Physical characteristics of volleyball boys', such as sudden force and speed and agility, have improved, and limb movement speed, balance, flexibility, torso strength and endurance of the upper limbs, have not changed. 3. Before starting to play volleyball, a statistically significant direct strong correlation was found between the physical characteristics of girls, and in the last six months the physical indicators were distributed from weak to strong relationships. The physical characteristics of boys before workouts are related to weak to strong relationships, and after half a year, direct and reverse moderate interfaces are established