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Abstract(s)
O presente estudo teve como principal objetivo perceber quais as respostas
neuromusculares, fisiológicas e psicofisiológicas a uma sessão de treino da força, no
exercício de supino (SP) e agachamento (AG). Participaram 13 sujeitos do sexo masculino,
com 23.31 ± 1.49 anos de idade, 175.92 ± 3.43 m de altura e 81.56 ± 8.13 kg de massa
corporal. Cada sujeito realizou uma avaliação inicial através de um teste progressivo para
a determinação da força máxima dinâmica (1RM). Após a determinação de 1RM, cada
sujeito realizou uma sessão de treino de força muscular, constituído por 3 séries de 8
repetições com 80% 1RM, com intervalo de 3-min entre as séries. Esta sessão de treino foi
realizada no exercício de SP e AG, de forma aleatória e em dias diferentes. A recolha de
dados foi realizada antes e após o treino no que se refere à velocidade média propulsiva
para 1 m/s (V1) para o SP e altura do salto contramovimento (CMJ) para o AG, ao lactato
sanguíneo [La-], frequência cardíaca (FC), pressão arterial (PA) e perceção subjetiva de
esforço (PSE). A perda de velocidade em V1 (para o SP) e da altura do CMJ (para o AG)
foram significativos demonstrando assim uma fadiga neuromuscular (p < 0.05). Quando
comparados os exercícios, verificamos uma maior perda de velocidade ao longo das séries
no SP em comparação com o AG (51% contra 31%), indicando assim um maior grau de
fadiga mecânica. Esta observação da maior acumulação de fadiga traduziu-se num
aumento superior dos valores de [La-], FC e PSE pós exercício. A PA pós exercício no SP
mostrou-se sem diferenças significativas (p >0.05), demonstrando-se como um efeito
hipotensivo para os 80% 1RM, diferente do AG que se manifestou como um exercício de
maior resposta cardiovascular (p > 0.05). Este estudo permitiu verificar que as respostas
neuromusculares, fisiológicas e psicofisiológicas apresentam diferenças entre si, e este
tende a ser específico do exercício utilizado.
This study had as main objective to perceive which neuromuscular, physiological and psychophysiological responses to a strength training session, without bench press (BP) and squat (SQ). Thirteen male subjects participated, aged 23.31 ± 1.49 years, 175.92 ± 3.43 m in height and 81.56 ± 8.13 kg of body weight. Each participant performed an initial assessment using a progressive test to determine the maximum required strength (1RM). After determining 1RM, each participant performed a muscle strength training session, consisting of 3 sets of 8 repetitions with 80% 1RM, with an interval of 3 minutes between sets. This training session was performed in the exercise of BP and SQ, at random and on different days. Data collection was performed before and after training, which refers to the mean propulsive velocity of 1 m / s (V1) for BP and the countermovement jump height (CMJ) for SQ, to blood lactate [La-], heart rate (HR), blood pressure (BP) and subjective perception of effort (RPE). The loss of speed in V1 (for BP) and height of CMJ (for SQ) were exhibited as neuromuscular fatigue (p <0.05). When the exercises are compared, there is a greater loss of speed throughout the series in BP compared to SQ (51% against 31%), indicating a greater degree of mechanical fatigue. This observation of the greater accumulation of translated fatigue is a higher increase in the values of La, HR and RPE after exercise. The BP post-exercise in exercise BP showed significant differences (p> 0.05), demonstrating that it is a hypotensive effect for 80% 1RM, different from SQ that manifests itself as an exercise with a higher cardiovascular response (p> 0.05). This study allowed to verify if the neuromuscular, physiological, and psychophysiological responses differ from each other, and are specific to the exercise used.
This study had as main objective to perceive which neuromuscular, physiological and psychophysiological responses to a strength training session, without bench press (BP) and squat (SQ). Thirteen male subjects participated, aged 23.31 ± 1.49 years, 175.92 ± 3.43 m in height and 81.56 ± 8.13 kg of body weight. Each participant performed an initial assessment using a progressive test to determine the maximum required strength (1RM). After determining 1RM, each participant performed a muscle strength training session, consisting of 3 sets of 8 repetitions with 80% 1RM, with an interval of 3 minutes between sets. This training session was performed in the exercise of BP and SQ, at random and on different days. Data collection was performed before and after training, which refers to the mean propulsive velocity of 1 m / s (V1) for BP and the countermovement jump height (CMJ) for SQ, to blood lactate [La-], heart rate (HR), blood pressure (BP) and subjective perception of effort (RPE). The loss of speed in V1 (for BP) and height of CMJ (for SQ) were exhibited as neuromuscular fatigue (p <0.05). When the exercises are compared, there is a greater loss of speed throughout the series in BP compared to SQ (51% against 31%), indicating a greater degree of mechanical fatigue. This observation of the greater accumulation of translated fatigue is a higher increase in the values of La, HR and RPE after exercise. The BP post-exercise in exercise BP showed significant differences (p> 0.05), demonstrating that it is a hypotensive effect for 80% 1RM, different from SQ that manifests itself as an exercise with a higher cardiovascular response (p> 0.05). This study allowed to verify if the neuromuscular, physiological, and psychophysiological responses differ from each other, and are specific to the exercise used.
Description
Keywords
Agachamento Fadiga Fisiológica Mecânica Psicofisiólogica Supino Treino da Força