Search results for "torque-frequency relation"

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Torque decrease during submaximal evoked contractions of the quadriceps muscle is linked not only to muscle fatigue.

2015

International audience; The aim of this study was to analyze the neuromuscular mechanisms involved in the torque decrease induced by submaximal electromyostimulation (EMS) of the quadriceps muscle. It was hypothesized that torque decrease after EMS would reflect the fatigability of the activated motor units (MUs), but also a reduction in the number of MUs recruited as a result of changes in axonal excitability threshold. Two experiments were performed on 20 men to analyze 1) the supramaximal twitch superimposed and evoked at rest during EMS (Experiment 1, n = 9) and 2) the twitch response and torque-frequency relation of the MUs activated by EMS (Experiment 2, n = 11). Torque loss was asses…

AdultMalemedicine.medical_specialtyPhysiology[ SDV.MHEP.AHA ] Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]recruitment ordermotor unit activationhuman skeletal-muscleperipheral fatigueIsometric exercisenerveisometric contractionQuadriceps MusclePhysiology (medical)Internal medicinemedicineTorqueHumansvoluntaryelectrical stimulationMotor NeuronsMuscle fatiguebusiness.industryElectromyographyQuadriceps muscletorque-frequency relationfemorisAnatomyneuromuscular electrical-stimulationtwitch interpolationElectric StimulationTorquefrequency[ SDV.NEU ] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]Muscle FatigueCardiologyfemoral nerve stimulationbusinessFemoral NerveMuscle ContractionJournal of applied physiology (Bethesda, Md. : 1985)
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