retirada (V y RET ) no primeiro esforço (p < 0,05). Desse modo, pode-se concluir que o RAST altera a mecânica de corrida e, além disso, o θtorn e CMz STD pareceram ser fundamentais e influenciam diretamente no desempenho deste modelo. Em terceiro lugar, foram encontradas mudanças no Spring-Mass Model (SMM) durante o RAST. A força máxima vertical do CM (F Z MAX ) diminuiu (-10,3%; p < 0,05). O deslocamento vertical do CM (∆ Z ) aumentou (+60,5%; p < 0,01). Vertical Stiffness diminuiu (-42,9%; p < 0,01) e a Leg Stiffness, não mudou. A contração voluntária máxima (CVM) de extensão de joelho (-4,4%) e a ativação voluntária (AV%) (-8,5 %) não mudaram (p > 0,05), mas foram evidenciadas correlações entre da PP com a razão RMS / M wave (r = -0,70), a PM e RMS (r = -0,77) juntamente com a razão RMS / M wave (r = -0,75) no VL. Dessa forma, pode-se concluir que a redução do desempenho e as alterações no comportamento do esforços repetidos, dos padrões de movimento, e do SMM, podem estar fortemente ligadas às respostas neuromusculares periféricas. Palavras Chave: biomecânica, fisiologia, desempenho humano. Abstract The aim of this study was to determine the physiological behavior, biomechanical and fatigue process in Running Anaerobic Sprint Test (RAST). Sixteen individuals (mean ± SD, 22.1 ± 3.1 years, body weight 78.6 ± 22.9 kg and height 186.1 ± 10.1 cm) were volunteers for this study. Participants underwent biomechanical, physiological monitoring and neuromuscular evaluations. In all cases it was made a warming-up by 5 min. After 120 s, underwent six maximal efforts of 35 m separated by 10 s passive rest (RAST). During efforts, two cameras captured the performance by kinematic bidimensional analysis while another 12 cameras were positioned to kinematic tridimensional analysis at 25 -35 m of each effort, after efforts were determined the concentrations of lactate ([Lac]). The TIP technique (Twitch Interpolation) was used for neuromuscular evaluations. The performance showed a difference from the fifth (5.1 ± 0.1 s) and sixth effort (5.4 ± 0.3 s; p <0.04), the index of decay performance models (IF % 19.2 ± 9.4%; IF REAL 19.3 ± 10.9%;). The fourth [Lac] (6.1 ± 1.9 mM) was different from all other (p < 0.01). Only the flight time (F T ) to fifth effort (0.16 s ± 0.03) compared to the first and second (0.12 ± 0.01 s; 0.13 s ± 0.02; p < 0.05) showed differences. Thereby, the RAST offers stabilization performance and mechanical regardless of [Lac], so it can be a useful tool in the training process until the fourth effort. On study two, when tested correlations with performance, the best time 1.3. INTRODUÇÃO Em esportes coletivos (e.g. futebol, basquetebol, handebol e voleibol), os eventos decisivos são de caráter intermitente (CASTAGNA et al., 2007; IAIA; RAMPININI;