The alternation of power indicators of football players during warm-up

Relevance. Choice of warm-up strategy is crucial in striving for the highest results during matches. It is necessary to plan the scope of warm-up, the intensity of warm-up and the type of exercises (Courtney, 2015). The overall objective of warm-up is to prepare athlete both physically and psychologically for forthcoming sporting activities (Walter, 2011; Hoffman, 2002). The aim: to determine the alternation of power indicators of football players during the warm-up (general, specialized). Tasks: 1. To determine the alternation of power indicators after general warm – up. 2. To determine the alternation of power indicators after specialized warm – up of football players. 3. To compare the alternation of power indicators after general warm – up and after specialized warm – up of football players. Object of the research: the alternation of power indicators of football players. Subjects of the reaserch. The research involved the players of Kaunas women‘s football team Žalgiris aged between 16 and 22 years (n=17). Each subject of the reaserch had been introduced with the workflow of the reaserch and trained in advance how to correctly perform tests. Methods of the reaserch. In this work these methods of reaserch were applied: 1) vertical jump with arm swing; 2) vertical jump from platform with fast amortizing push. Organization of the research. The research was performed 4 times (during the introductory, endurance, power endurance and explosive power microcycles) and included vertical jumps (with arm swing) and drop jump from 20 cm platform (with arm swing). Tests on subjects of the research were performed 3 times: before warm-up, after general warm-up and after specialized warm-up of football players. Each subject of the research performed three maximized jumps with a breaktime of about 4 – 5 minutes between jumps. Conclusions: 1. Power indicators of football players after general improved on average by 9,51 ± 4,5 percent. 2. Specialized warm-up of football players mostly improved drop jump results. 3. Overally warm-up improved power indicators of football players by 10,4 ± 5,1 percent. After comparing alternation of power indicators after general warm-up and after specialized warm-up of football players, we affirm that 15 minutes long specialized warm-up 7 improves power indicators on average by 1 percent, whereas general type of warm – up of similar duration by 10 percent