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Resumo  O objetivo deste estudo foi avaliar a potencia anaerobia antes e apos o periodo competitivo em atletas profissionais de futebol. Participaram do estudo 25 atletas do genero masculino avaliados antes e apos o periodo competitivo. A potencia anaerobia foi avaliada atraves do teste de corridas de velocidade repetidas (RAST), com o qual foram determinadas a potencia maxima (PMAX), potencia media (PMED), potencia minima (PMIN) e o indice de fadiga (IF). O teste foi realizado na primeira (PRE) e na ultima (POS) sessao de treinamento do periodo competitivo, que teve a duracao de 20 semanas. Nao houve diferenca significativa (p>0,05) entre PRE e POS em nenhum dos parâmetros analisados, PMAX (10,70 ± 0,95 vs 10,83 ± 0,87), PMIN (8,48 ± 0,92 vs 8,28 ± 0,76), PMED (9,52 ± 0,83 vs 9,41 ± 0,61) e IF (22,73 ± 7,48 vs 25,53 ± 8,79). Nao ha alteracao significativa na potencia anaerobia apos um periodo competitivo de 20 semanas em atletas profissionais de futebol.  Palavras-Chave  Potencia anaerobia, RAST, Futebol, periodo competitivo.  ASSESSMENT OF ANAEROBIC POWER BEFORE AND AFTER COMPETITIVE PERIOD IN PROFESSIONAL SOCCER PLAYERS  Diogo Henrique Constantino Coledam Douglas dos Santos Julio Wilson dos-Santos Abstract  The aim of this study was to examine changes on anaerobic power after competitive period in professional soccer players. Twenty five male was evaluated before (PRE) and after (POS) competitive period. To assess anaerobic power was used running based on anaerobic sprint test (RAST), which were determined the maximum power (MAXP), medium power (MEDP), minimum power (MINP) and fatigue index (FI). The test was performed in the first (PRE) and the last (POS) training session of competitive period, wich lasted 20 weeks. There were no significant difference (p>0,05) in POS condition compared to PRE condition on MAXP (10,70 ± 0,95 vs 10,83 ± 0,87), MINP (8,48 ± 0,92 vs 8,28 ± 0,76), MEDP (9,52 ± 0,83 vs 9,41 ± 0,61) and FI (22,73 ± 7,48 vs 25,53 ± 8,79). There was no significant change on anaerobic power after a competitive period wich lasted 20 weeks in professional soccer players.  Key-Words  Anaerobic power, RAST, Soccer, competitive period

Avaliação da potência anaeróbia antes e após o período competitivo em atletas profissionais de futebol