Tinklininkų greitumo jėgos lavinimas taikant specializuotus pratimus

LTReikšminiai žodžiai: Fizinis parengtumas; Greitumo jėga; Tinklinis; Physical fitness; Quickness force; Volleyball.

ENMany researchers dealing with the training and fitness of volleyball players agree that quickness force and various forms of its manifestation are among the most important physical characteristics of volleyball players (Gabbett et al., 2006; Stonkus et al., 2002; Железняк, Ивойлов, 2009). Contemporary volleyball requires quick, exact understanding, concentration of attention, reaction speed, and also requires exceptional precision and movement differentiation from a player (Железняк, 2009). Sports pedagogues and researchers grounding on regularities of the adaptation of one's body apply several major systems for planning the training load that differ by load distribution and specificity of its performance (Komi, 1992; Karoblis, 2005). The problem of quickness force development, design and application of optimal programmes is quite relevant and frequently investigated. Even though problems of volleyball players' quickness force have been dealt with by many researchers (Bahr et al., 1997; Borras et al., 2011; Duzgun et al., 2010; Iwinski, 2001; Young, 2005), it is important to note that research conclusions are not unambiguous. This reasons for the relevance of the research. On the ground of biological regularities of the body's adaptation to physical loads (Komi, 1992; Wilmore, Costill, 1994) it is considered that 12-week-length loads of springing significantly impact indices of quickness force. The aim of the research is to estimate and assess the effectiveness of a special programme of physical loads for quickness force on changes of high performance volleyball players' quickness and quickness force indices. The research sample consisted of 17 volleyball players from a club "Elga-Master Idea" of the Šiauliai sports school "Dubysa" (n=17), champions and prize-winners of the Baltic Volleyball League, and Lithuanian youth and adults championships.The experimental group (n=8) involved players of a lower game rate, while the control group involved those of a higher level (n=9). The research employed the following methods: pedagogical experiment (three months (twice per week, on Tuesdays and Thursdays) the experimental programme for development of volleyball players' quickness force development was applied), and testing (30 m high start run, jumps on a contact track, and the 10x5m shuttle run test). Results of the experimental research suggest the effectiveness of the emphasised drill in the development of volleyball players' characteristics of quickness force. The experimental group volleyball players' height of a jump without arm swing and with arm swing improved respectively by 9.12 and 5.09 per cent, whereas those of the control group increased accordingly by 1.53 and 0.16 per cent. The least impact was made on run indices (from 0.24 to 1.27 per cent). It should be noted that changes in all quickness force indices of the control group reached on average 0.79 per cent, and those of the experimental group reached 3.21 per cent. [From the publication]