The aim of this study was to evaluate the use of the running anaerobic sprint test (RAST) as a predictor of anaerobic capacity, compare it to the maximal accumulated oxygen deficit (MAOD) and to compare the RAST's parameters with the parameters of 30-s all-out tethered running on a treadmill. 39 (17.0±1.4 years) soccer players participated in this study. The participants underwent an incremental test, 10 submaximal efforts [50-95% of velocity correspondent to VO(2MAX) (vVO(2MAX))] and one supramaximal effort at 110% of vVO(2MAX) for the determination of MAOD. Furthermore, the athletes performed the RAST. In the second stage the 30-s all-out tethered running was performed on a treadmill (30-s all-out), and compared with RAST. No significant correlation was observed between MAOD and RAST parameters. However, significant correlations were found between the power of the fifth effort (P5) of RAST with peak and mean power of 30-s all-out (r=0.73 and 0.50; p<0.05, respectively). In conclusion, the parameters from RAST do not have an association with MAOD, suggesting that this method should not be used to evaluate anaerobic capacity. Although the correlations between RAST parameters with 30-s all-out do reinforce the RAST as an evaluation method of anaerobic metabolism, such as anaerobic power.
RESUMOO objetivo do presente estudo foi comparar a velocidade crítica (VC) com o limiar anaeróbio (LAN) e verificar as relações dessas variáveis e da capacidade de nado anaeróbio (CTA) com o desempenho de nadadores nas distâncias de 15m, 25m, 50m, 100m, 200m e 400m nado crawl. Participaram voluntariamente do estudo 8 nadadores de nível nacional, que realizaram 3 esforços progressivos (85%, 90% e 100%) de 400m nado crawl para determinação do LAN, bem como esforços máximos nas distâncias de 15m, 25m, 50m, 100m, 200m e 400m em estilo crawl. Os tempos obtidos nas distâncias de 200m e 400m foram submetidos ao procedimento de regressão linear para determinação da VC (coeficiente angular) e CTA (coeficiente linear). A VC (1,38 ± 0,07) não foi significativamente diferente (p<0,05) do LAN (1,37 ± 0,05) e apresentaram correlações significativas com a performance de 400m nado crawl (p<0,05), enquanto que a CTA não se correlacionou significativamente com nenhuma das performances de nado. Desse modo pode-se concluir que a VC é um parâmetro confiável na avaliação da capacidade aeróbia e na predição da performance de 400m nado crawl. No entanto, a CTA obtida pelo intercepto-y não foi um bom preditor da performance dos nadadores nas distâncias entre 15m a 400m.Palavras-chave: natação, capacidade anaeróbia, velocidade crítica, performance. ABSTRACT Use of invasive and non-invasive protocol tests on aerobic and anaerobic performances prediction in Brazilian swimmers The purpose of this study was to compare the critical velocity (VC) with the anaerobic threshold (LAN) and verify the relationship among
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