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Using kettlebell swing to increase the explosive strength of the lower limbs on volleyball players
JEŘÁBKOVÁ, Andrea
This Bachelor thesis deals with question of training explosive power of lower limbs by volleyball players. Because of high important, jump is the main part of performance in volleyball, it´s necessary to keep development of explosive power in training thoroughly. In development of this power is used technique of deep squat with a barbell, in which upper limbs are inactive. However for jump, upper limbs are used as one of necessary parts so for this research kettlebell swing technique was used, as its involve upper limbs and the body generally. The theoretical part of this thesis contains a description of muscular power, its meaning and what affects it. The part also contains description of volleyball jump, its performing during the game and its overall contribution to player´s performance. In this part is description of kettlebell swing technique, why it´s suited to increasing explosive power of lower limbs and how its affect organism. Furthermore, there is a description of its correct execution and muscle involvement during the exercise. In the same way is written a chapter about the technique of deep squat with a barbell. Practical part was made as a qualitative research by using of six case casuistry, which contains input and output kinesiological analysis, tests of postural stabilization and postural reactibility by Kolář, tests of shortened muscles by Janda and tests of explosive power (K-test, absolute reach and standing long jump). In this part are also described methods, carrying out and results of examinations and tests that have been conducted in this research. Research takes three months, during which, tested subjects practiced particular techniques and then by their own training plans ordered by teams. In results there are described individual case casuistry, and at the end of each case casuistry is evaluation of each subject. In overall evaluation are compared results of tests of explosive power and other examination of all subjects. Results shows importance of correct execution and correct activation of deep stabilization system. During the research two subject were injured so their exercises and final results was affected. This Bachelor thesis could be used as a source of information for coaches or players, not only, volleyball and also it could be used for rehabilitation after injuries of lower limbs. Thanks to moves made during kettlebell swing, which comes from hip joints, aren´t knee joints loaded so much. After operations and necessary immobility occurs muscular atrophy, decentered position of lower limbs root joints and instability. Due this reason kettlebell swing technique could be used to increase muscle strength of lower limbs after injuries of meniscus, anterior cruciate ligament, joint ankle distortions and various traumatic injuries of lower limbs.
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