Neural ConductionMuscle Fibers, SkeletalMuscle, SkeletalElectromyographyMuscle ContractionIsometric ContractionMusclesMotor NeuronsMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchHeart Conduction SystemMuscle ProteinsMuscle DevelopmentMuscle, SmoothNerve FibersMuscle FatigueMuscle DenervationMuscle, Smooth, VascularMyofibrilsRana temporariaMuscular DiseasesElectric StimulationAction PotentialsMyosin Heavy ChainsAtrioventricular NodeMuscle SpindlesMitochondria, MuscleTime FactorsQuadriceps MuscleSarcomeresOculomotor MusclesPsoas MusclesDietary FiberNeuromuscular JunctionCalciumMuscular AtrophyBiomechanical PhenomenaRabbitsMuscle RelaxationMuscular Dystrophy, AnimalMembrane PotentialsMuscle, StriatedHeart BlockElectrophysiologyRana pipiensMuscle WeaknessPurkinje FibersHindlimbMice, Inbred mdxNeck MusclesThoracicaSatellite Cells, Skeletal MuscleExerciseDiaphragmAnuraAxonsPapillary MusclesMyocytes, Smooth MuscleMuscle StrengthMasseter MuscleCreatine KinaseTendinopathyMineral FibersMuscle CellsElectrocardiographyNerve Fibers, MyelinatedIsotonic ContractionSarcolemmaRespiratory MusclesCatsMyosinsMasticatory MusclesIntercostal MusclesCrustaceaMedian NerveAbdominal MusclesTendonsDystrophinFacial MusclesBone ConductionPeripheral NervesPhysical ExertionMicroscopy, ElectronMotor EndplateRats, WistarDogsHistocytochemistryStress, MechanicalSarcoplasmic ReticulumRefractory Period, ElectrophysiologicalRats, Sprague-DawleyMyocardiumCotton FiberPectoralis MusclesModels, BiologicalHypertrophyUlnar NerveHeartCardiac Pacing, ArtificialSciatic Nerve