The level of statistical significance will be p <0.05.Įxpected results: The effect of an NMES session on the neural, muscular and tendon adaptations related to the angular specificity of the hip and knee, indicating greater potential for strength and muscle mass gains, will be shown, which is fundamental in the prescription of electrostimulation in rehabilitation. Correlation coefficients will be calculated using the Pearson (parametric) or Spearman (non-parametric) correlation test. The non-parametric option will be the Friedman test. For the data that present normal distribution, the Two-Way ANOVA will be applied to verify differences among the measurements, with post-hoc of Bonferroni. The normality of the data will be verified with the Shapiro-Wilk test. The descriptive and analytical statistics will be carried out with measures of central tendency and dispersion, inference tests, tables and graphs. The dependent variables will be: knee extensor torque, surface muscle electrical activity, muscle architecture (muscle thickness, pennation angle and fascicular length), the elongation of the tendon-aponeurosis complex of the quadriceps muscle components, and the properties (stiffness, Young's modulus and cross-sectional area) of the patellar tendon. The independent variables will be: 1) NMES in different lower limb positions: knee joint angulation at 20º or 60º with hip at 0º or 80º (four combinations). Material and Methods: This is a crossover study with healthy males, aged 18-35 years. Objective: To investigate the effect of NMES on different hip and knee angles on knee extensor torque, quadriceps muscle electromyographic activity, architecture, and tendon-aponeurosis complex elongation, and tendinous properties of the patellar tendon. Although studies have demonstrated the efficacy of NMES in various clinical situations, the best joint angle (ideal muscle length) to enhance neuromuscular and tendinous adaptations induced by NMES has to be determined. Neuromuscular electrical stimulation (NMES) is a wide-used tool in rehabilitation for motor relearning, to reduce muscular atrophy, pain control and to improve functional performance. In addition, tendinous properties also affect the production of muscle strength and function. Introduction: The muscle contractile effectiveness is influenced by the neural activation of the motor units, as well as its architecture and the elasticity of the myotendinous junction. Why Should I Register and Submit Results?.

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