Associação entre desempenho em teste de 1-RM e força isométrica máxima em participantes do programa de extensão NADEP - UFU

Abstract

The present study addresses the association between 1-RM test performance and maximal isometric strength in participants of the Program Development Support Group in the Physical Fitness and Fitness Areas (NADEP) of the Federal University of Uberlândia (UFU). Both tests measure maximum strength, so the study describes the application and compares the results obtained by these instruments to see if there is similarity between them. The work advocates the ease of applying the maximum isometric force test to the detriment of the 1RM test, emphasizing points such as low cost and the need for support to perform the test. Considering the aforementioned information, the objective of the project is to verify the association between 1-RM test performance in the ground lifting exercise (LT) with the maximum isometric force evaluated by the lumbar extension dynamometer. The sample of this study was composed of 32 volunteers, with age of 25.8 ± 5.1 years. The volunteers were submitted to two tests of maximum strength, one test in the LT exercise and one in the lumbar extension dynamometer. The heating for such consisted of: 15 repetitions with bar weight, 7 repetitions with 30% of the load (according to the total load described by each volunteer) and 3 repetitions with 70% of the load in the LT exercise, having 1 'of rest between each series, soon after, the 1-RM test with 5 attempts was performed. Completing the first test, the volunteer had 10 'rest to perform the second test, consisting of 3 trials with 1' rest between the trials. The load obtained in LT was 112.8 ± 41.1 kg and, in the dynamometry of lumbar extension 116.8 ± 41.0 kg. A strong and positive correlation was found between the two variables (r = 0.99 and p <0.01). In addition, a regression equation with a strong fit R² = 0.99 (y = 0.9907x + 5, 0852). There is a strong association between 1RM in LT exercise and lumbar extension dynamometry, in addition, data indicate that lumbar extension dynamometry can predict maximal load in LT exercise.