Percepção subjetiva do esforço em jogos oficiais de Futsal / Perception subjective effort in official Futsal games

O objetivo do presente estudo foi quantificar a intensidade dos esforços utilizando o método da PSE em partidas oficiais de futsal. A amostra foi constituída por 10 atletas do sexo masculino (16,5±2 anos) que participaram da etapa estadual dos Jogos Escolares da Juventude. Foi avaliado o comportamento da percepção subjetiva de esforço (PSE) em resposta à cinco jogos oficiais de futsal na categoria sub-17, sendo dois pela fase classificatória e três pela fase final da competição. A quantificação da carga interna foi determinada através do método da PSE da sessão (FOSTER et, al., 2001). Foram encontrados valores médios de 7,5 e 7,4 para as partidas da 1ª fase e 8,2, 8,7 e 8,9 para os jogos da fase final. Os resultados indicam cargas crescentes ao longo da competição, demonstrando que os jogos foram realizados com intensidades elevadas, compatíveis com intensidades de partidas de futsal analisadas utilizando outros indicadores, como frequência cardíaca e lactato. Pode-se concluir que a PSE é um método confiável para mensurar a intensidade dos esforços em partidas oficiais de futsal.(AU)

The aim of this study was to quantify the degree of effort using the method of PSE in official games of futsal. The sample consisted of 10 male athletes (16.5 ± 2 years) who participated in the state level of School Youth Games. The behavior of perceived exertion (RPE) in response to the five official games of futsal in the under-17 category was evaluated, two and three through the qualifying for the final stage of the competition. The quantification of the internal load was determined by the session SPE (Foster et, al. 2001) method. Average values of 7.5 and 7.4 for departures from 1st stage and 8.2, 8.7 and 8.9 for the finals matches were found. The results indicate increasing loads throughout the competition, demonstrating that the games were held at high intensities, consistent with intensities of futsal matches analyzed using other indicators such as heart rate and lactate. Can conclude that the PSE is a reliable method to measure the intensity of the efforts in official games of futsal.(AU)

Acute effects of proprioceptive neuromuscular facilitation and static stretching on maximal voluntary contraction and muscle electromyographical activity in indoor soccer players.

The aim was to investigate and compare the effects of proprioceptive neuromuscular facilitation (PNF) and static stretching (SS) on maximal voluntary contraction (MVC) and muscle activation in indoor soccer players. Thirty-three young adult men were divided into two groups: (i) sedentary and (ii) trained. Each group completed three different experimental trials: SS, PNF and no stretching (NS). The MVC of knee extension was evaluated before and immediately after each condition along with electromyography from the vastus lateralis (VL) and rectus femoris (RF) muscles of the dominant leg. PNF or SS techniques induced no decrease on MVC and muscle electromyographical activity in indoor soccer players (P>0·05). The electromyography of the RF and VL was lower after SS only in the sedentary group (P≤0·05). Short-duration PNF or SS has no effect on isometric MVC and muscle activity in indoor soccer players.