RESUMO
The purpose of this study was to check the validity and the intra- and inter-evaluators reproducibility of the Sargent Jump Test, as an instrument of explosive strength measurement of soccer players of the sub-15 class. Forty-five soccer players were randomly selected from different clubs competing in the local soccer championship. All subjects performed one test on the same jump platform model Jumptest(®) (Hidrofit Ltda, Brazil) and two independent Sargent Jump Tests assessed by the same evaluator. Two days later, another Sargent Jump Test was performed simultaneously assessed by 2 evaluators. In all tests, three jumps were performed and the highest one was registered. In order to check the validity, the first Sargent Jump Test results were compared to those from the jump platform, considered the gold standard. To evaluate intra- and inter-evaluator reproducibility, results from the first, second and third Sargent Jump Tests were analyzed. The validity and reproducibility were evaluated by intraclass correlation coefficients (ICC), and by the Bland and Altman test (statistical pack SPSS 11.0), with a significance level set at p<0.05. The values found for validity (r=0.99, p=0.001), for intra-evaluator reproducibility (r=0.99, p=0.001) and for inter-evaluator reproducibility (r=1.0, p=0.001), permitted us to conclude that the Sargent Jump Test is a valid and reproducible instrument for measuring the explosive strength in homogeneous groups, such as those used in the present study.
RESUMO
O objetivo deste estudo foi verificar a validade e afidedignidade intradia e interdias do Sargent Jump Test, comoinstrumento de medida da força explosiva de atletas de futebolda categoria sub-15. Material e Métodos: Foram avaliados45 jogadores dos clubes que disputam o campeonato cariocade futebol, escolhidos aleatoriamente, que executaram umteste numa plataforma de saltos, e dois Sargent Jump Tests,todos no mesmo dia, e mais um Sargent Jump Test 48 horasapós. Em todos os testes foram executados três saltos esomente o maior deles foi computado. Para avaliar a validadeforam utilizados os resultados dos saltos na plataforma e doprimeiro Sargent Jump Test. Para avaliar a fidedignidadeintradia foram utilizados os resultados do primeiro e segundoSargent Jump Test e para avaliar a fidedignidade interdias,os resultados do primeiro e do terceiro Sargent Jump Test.Para análise da normalidade dos dados foi utilizado o testede Kolmogorov-Smirvov. Resultados: A validade e a fidedignidadeforam dadas através do coeficiente de correlaçãointerclasses e do teste de Bland e Altman, do software SPSS11, com nível de significância p<0,05. Observou-se: validade(r=0,99, p=0,001), fidedignidade intradia (r=0,99, p=0,001),e fidedignidade interdias (r=0,97, p=0,001). Conclusão: Estesresultados permitem afirmar que o Sargent Jump Testconstitui-se num instrumento útil e válido para avaliação daforça explosiva...
Objective: The aim of the this study was to check the validityand the intra and interday reliability of the Sargent Jump Test,as an instrument to measure the explosive strength of sub-15 soccer players. Materials and Methods: Forty-five soccerplayers from clubs which dispute the Carioca Championship,randomly selected, performed one test in a Jump Platformand two Sargent Jump Tests, all in the same day and anotherSargent Jump Test 48 hours later. In all tests they performedthree jumps and only the highest one was computed. Toassess the validity there were used the results from theJump Platform and from the first Sargent Jump Test. To assessthe intraday reliability, there were used the results from thefirst and the second Sargent Jump Test and to assess theinterday reliability, the results of the first and the third SargentJump Test. To analyze normality of the data it was used theKolmogorov-Smirvov test. The validity and reliability weregiven through the interclass correlation coefficient andthrough the Bland-Altman test, from the SPSS 11 software,with a significance level of p<0,05. Results: It was noted:validity (r=0,99, p=0,001), intraday reliability (r=0,99, p=0,001),and interday reliability (r=0,97, p=0,001). Conclusion: Theseresults indicate that the Sargent Jump Test constitutes a usefuland valid instrument to assess the explosive strength...
