Listar INVESTIGACIÓN por autor "Martínez-Valdés, Eduardo [Univ Mayor, Ctr Invest Fisiol Ejercicio CIFE, Santiago, Chile]"
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Changes in the ankle muscles co-activation pattern after 5 years following total ankle joint replacement
Martínez-Valdés, Eduardo [Univ Mayor, Ctr Invest Fisiol Ejercicio CIFE, Santiago, Chile]; De la Fuente, Carlos; Cruz-Montecinos, Carlos; Guzmán-Venegas, Rodrigo; Arriagada, David; Pena y Lillo, Roberto; Henríquez, Hugo; Carpes, Felipe P. (ELSEVIER SCI LTD, 2018)Background: The Hintegra (R) arthroplasty provides inversion-eversion stability, permits axial rotation, ankle flexion-extension, and improvements of the gait patterns are expected up to 12 months of rehabilitation. However, ... -
Differences in neuromuscular activity of ankle stabilizing muscles during postural disturbances: A gender-specific analysis
Martínez-Valdés, Eduardo [Univ Mayor, Ctr Invest Fisiol Ejercicio CIFE, Santiago, Chile]; Mueller, Juliane; Stoll, Joséfine; Mueller, Steffen; Engel, Tilman; Mayer, Frank (ELSEVIER IRELAND LTD, 2018)The purpose was to examine gender differences in ankle stabilizing muscle activation during postural disturbances. Seventeen participants (9 females: 27 +/- 2yrs., 1.69 +/- 0.1 m, 63 +/- 7 kg; 8 males: 29 +/- 2yrs., 1.81 ... -
Early Motor Unit Conduction Velocity Changes to High-Intensity Interval Training versus Continuous Training
Martínez-Valdés, Eduardo [Univ Mayor, Ctr Invest Fisiol Ejercicio CIFE, Santiago, Chile]; Farina, Dario; Negro, Francesco; Del Vecchio, Alessandro; Falla, Deborah (LIPPINCOTT WILLIAMS & WILKINS, 2018)Purpose Moderate-intensity continuous training (MICT) and high-intensity interval training (HIIT) are associated with different adjustments in motor output. Changes in motor unit (MU) peripheral properties may contribute ... -
Influence of fatigue and velocity on the latency and recruitment order of scapular muscles
Martínez-Valdés, Eduardo [Univ Mayor, Ctr Invest Fisiol Ejercicio CIFE, Santiago, Chile]; Méndez-Rebolledo, Guillermo; Gática-Rojas, Valeska; Guzmán-Muñoz, Eduardo; Guzmán-Venegas, Rodrigo; Berral de la Rosa, Francisco José (CHURCHILL LIVINGSTONE, 2018)Objectives: To determine the influence of velocity and fatigue on scapular muscle activation latency and recruitment order during a voluntary arm raise task, in healthy individuals. Design: Cross-sectional study. Setting: ... -
Surface electromyographic amplitude does not identify differences in neural drive to synergistic muscles
Martínez-Valdés, Eduardo [Univ Mayor, Ctr Invest Fisiol Ejercicio CIFE, Santiago, Chile]; Negro, Francesco; Falla, Deborah; De Nunzio, Alessandro Marco; Farina, Dario (AMER PHYSIOLOGICAL SOC, 2018)Surface electromyographic (EMG) signal amplitude is typically used to compare the neural drive to muscles. We experimentally investigated this association by studying the motor unit (MU) behavior and action potentials in ...