Comparação da capacidade aeróbia através dos testes de Vai-e-vem de 20 metros e de Weltman em futebolistas

Abstract

The measurement of VO2max is accepted internationally as the best physiologic parameter to evaluate the cardio respiratory system and can be done direct or indirectly. However, direct tests are expensive, difficult to be performed and require skilled staff. For that reason, there is the necessity of field tests that are simpler and easier to be conducted, valid and reliable in determining the VO2max, thereby providing a source of evaluation of training effectiveness, as with happens in football. This study has the purpose of assessing and comparing the aerobic capacity in young soccer players using the Weltman test and the 20 meter shuttle run test, in athletes of juvenile, junior and professional categories, establishing still a correlation between these tests in the referred groups, evaluating the value of the employed methods. The sample consisted of 71 young men, aged 16 to 28 years old. The collection of data took place at grassy field, being the Weltman test realized in the first day and in the second one, the 20 meter shuttle run test. To verify the correlation of VO2max obtained in these tests, in each category, it was used the Pearson correlation and to compare them, it was used the students t test for independent samples, being adopted a significance level of p0,05. The VO2max values found for Weltman and 20 meter shuttle run test, respectively, were 56,8±4,5 ml(kg.min)-1 and 51,8±3,3 ml(kg.min)-1 for the juveniles; 55,3±2,3 ml(kg.min)-1 and 54,0±3,0 ml(kg.min)-1 in junior category; 56,4±3,2 ml(kg.min)-1 and 54,6±3,8 ml(kg.min)-1 in professional athletes. It was found a correlation of r= 0,87, for the juveniles; r= 0,72, for junior, and r= 0,95, for the professional, being p 0,01. It can be concluded that the two test present in this study, high and significative correlations in the three categories analyzed, what express that they assess the same aspect of the conditioning (aerobic capacity), without, therefore, restriction on its use.