Análisis de la fatiga muscular y la percepción del esfuerzo en diferentes protocolos de entrenamiento en el ejercicio de sentadilla

Abstract

Muscle fatigue is considered a fundamental variable in strength training. It depends on it whether or not athletes achieve sports performance, or increase the volume of training, without losing efficiency. Objective: To analyze in trained mens, acute muscle fatigue in the lower body and loss of performance, after hypertrophy strength training protocols, comparing and combining different traditional and current methods. Methods. Study 1: Localized muscle fatigue and loss of performance in the lower body were analyzed in 16 trained subjects with different hypertrophy training protocols with Cluster methodology in squats (free weight, guided weight, free weight + EMS and guided weight + EMS). Study 2: Localized muscle fatigue and performance loss in the lower body were analyzed in 16 trained subjects after two hypertrophy strength training protocols (free weight and yoyo squat). Results: Study 1: Intragroup, significant differences (p<0.05) were obtained in all the variables analyzed, except localized muscle pain in all the protocols carried out. Intergroup, no significant differences were found in any of the variables analyzed. Study 2: Intragroup, significant differences (p<0.05) were obtained in all the variables analyzed in both protocols. Intergroup, significant differences (p<0.05) were obtained between both training, only in the jump (SJ and CMJ). Conclusions: Hypertrophy strength training generates acute localized muscle fatigue associated with a decrease in sports performance, with isoinertial training being the most fatiguing of all the methods used.