Search results for "human motoneurons"

showing 1 items of 1 documents

The Etiology of Muscle Fatigue Differs between Two Electrical Stimulation Protocols

2016

International audience; Purpose: This study aimed at investigating the mechanisms involved in the force reduction induced by two electrical stimulation (ES) protocols that were designed to activate motor units differently. Methods: The triceps surae of 11 healthy subjects (8 men; age, similar to 28 yr) was activated using ES applied over the tibial nerve. Two ES protocols (conventional [CONV]: 20 Hz, 0.05 ms vs wide-pulse high-frequency [WPHF]: 80 Hz, 1 ms) were performed and involved 40 trains (6 s on-6 s off) delivered at an intensity (I-ES) evoking 20% of maximal voluntary contraction. To analyze the mechanical properties of the motor units activated at I-ES, force-frequency relation was…

MaleStimulationElectromyographytorque decreaseplateau-like behaviorh-reflexchemistry.chemical_compound0302 clinical medicinemotor unit recruitmentOrthopedics and Sports Medicinehuman motoneuronsquadriceps femorismedicine.diagnostic_testChemistryPulse (signal processing)Anatomystimulation parametersHealthy VolunteersMuscle Fatiguetriceps surae[SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]Femalemedicine.symptomMuscle ContractionMuscle contractionAdultRecruitment Neurophysiologicalmedicine.medical_specialtyhuman skeletal-musclePhysical Therapy Sports Therapy and RehabilitationnervePhosphocreatineYoung Adult03 medical and health sciencesInternal medicineexcitabilitymedicineHumansMuscle SkeletalMuscle fatigueElectromyography030229 sport sciencesmagnetic resonance spectroscopyElectric StimulationEndocrinologyevoked contractions[ SDV.NEU ] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]Motor unit recruitmentTibial NerveH-reflex030217 neurology & neurosurgeryMedicine & Science in Sports & Exercise
researchProduct