OBJETIVO: O objetivo deste estudo foi comparar o desempenho no teste de potência de membros inferiores e flexibilidade de atletas de voleibol do gênero feminino, categoria sub-16, submetidas exclusivamente ao treino de força com atletas submetidas ao treino de força e flexibilidade.MÉTODOS: As atletas foram divididas em dois grupos. Um grupo realizou o treinamento de força (GTF) e o outro grupo efetuou o treinamento de força e flexibilidade (GTFF). O período de treinamento foi de dois meses. Para a avaliação da potência de membros inferiores e flexibilidade optou-se, respectivamente, pelo teste de salto horizontal e sentar-e-alcançar. Verificou-se a normalidade dos dados através do teste de Shapiro-Wilk. Alicerçado nestes resultados, utilizou-se o Anova two way, com post hoc de Sidak, para duas amostras independentes a fim de identificar o efeito do treino nos testes de salto horizontal e sentar-e-alcançar. O teste de Mann Whitney foi utilizado para verificar a diferença da melhora entre grupos no teste de força, e o teste t independente para verificar a diferença da melhora entre grupos do teste de sentar-e-alcançar.RESULTADOS: Verifica-se que houve diferença entre as médias entre as diferentes avaliações (tempo) no teste de salto horizontal [F(2,48)=10,282; p0,05] e flexibilidade [F(2,48)=10,298; p0,05). No salto horizontal a diferença significativa ocorreu no grupo GTF (p0,05). Na flexibilidade, a diferença significativa ocorreu no GTFF (p0,05). Na comparação entre grupos, o teste de Mann Whitney retornou valor de p=0,924 no teste de força. Não obstante, o teste t independente retornou valor de p=0,106 no teste de sentar-e-alcançar.CONCLUSÃO: Conclui-se que em face a importância da flexibilidade para atletas de voleibol, ainda que a GTFF não tenha apresentado melhora significativa no teste de impulsão vertical, não é possível refutar a utilização do treino de força aliado ao treino de flexibilidade. ABSTRACT. Effects of different models of strength and flexibility training on the performance of the horizontal jump and sit-and-reach test in volleyball players.OBJECTIVE: This study aimed to compare the performance in the lower limb strength test and flexibility test of athlete of volleyball of the feminine gender, category sub-16, exclusively submitted to the strength training with athletes submitted to the strength training and flexibility training. METHODS: The athletes were divided in two groups. A group carried through the strength training (GTF) and the other group effected the strength training and flexibility training (GTFF). The period of training was of two months. For assessing lower limb strength and flexibility it was opted, respectively, for the horizontal jump test and to sit-and-reach test. It was verified normality of the data through the test of Shapiro-Wilk. Based in these results, Anova two way with post hock of Sidak was used to identify the effect of training in horizontal jump test and sit-and-reach test. For the difference between the initial and final test of each group, the Mann Whitney test was used to identify the difference of the improvement between groups in the strength test and independent test t was used to identify the difference of the improvement between groups of the sit-and-reach test. RESULTS: We found that there was a difference between the different test in the horizontal test [F(2.48)=10.282; p0.05] and sit-and-reach test [F(2.48)=10.298; p0,05). In the horizontal jump test there was a difference in GTF group (p0.05). In the flexibility test there was a difference in GTFF group. In the comparison between groups, the Mann Whitney test returned value from p=0.924 for the performance of the strength test. Besides that, independent test t returned value from p=0.106 for the performance of the flexibility test. CONCLUSION: We concluded that in view the importance of flexibility for volleyball athletes, it is not possible to refute the use of strength training combined with flexibility training.
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