Investigation of the effect of plyometric trainings on arm and leg strenght, the strokes speed of service, forehand and bachand and the percentages of shot accuracy.


Thesis Type: Doctorate

Institution Of The Thesis: Marmara University, Faculty of Sport sciences, Sport Coaching, Turkey

Approval Date: 2011

Thesis Language: Turkish

Student: Burçin Ölçücü

Consultant: Niyazi Güven Erdil

Abstract:

In this study, the effect of plyometric trainings on tennis players? arm and leg strength, the strokes speed of forehand, backhand, service and the percentage of shot accuracy was surveyed. 40 male tennis players, who were 20-25, attended to the study voluntarily. Attenders were separated into two groups with objective designation as test group (n=20) and control group (n=20) and balanced according to their ages. While the members of test group attended to plyometric training programme (3 days in a week and 2 sets in a day) in addition to 8 week classical tennis trainings, in this period control group went on just classical trainings. Measurements related to the dependent variable were made in the beginning of the study, at the 4th week and at the 8th week. ?Mixed between-within subjects ANOVA? was used to evaluate the effect of the trainings on dependent variable. It was seen that the significant changes at average pik tork scores their resistance speed for the lower part of the body especially 60?/second and 120?/second (right extension/ right flexion), their resistance speed for the higher part of the body 60?/second (external rotation) arise from the test group (p<.50). Maximum speed progresses at backhand and forehand parallel and cross punches were pointedly higher and the progress at the scores of hitting the mark particularly in backhand cross punches and all service punches emerged for test group (p<.50). As a consequence, plymetric exercises used as an addition to the classical training have positive effects on the strength of leg and shoulder; in the mean time they enhanced both the punching and throwing speed and the rate of hitting the mark