Muscle ContractionMuscle, SkeletalMuscle Fibers, SkeletalIsometric ContractionMusclesTroponin CTroponinMuscle ProteinsMyosinsMuscle FatigueTropomyosinHeartRabbitsCalciumElectric StimulationMuscle, SmoothRegional Blood FlowMuscle, Smooth, VascularHeart RateMuscle DevelopmentSciatic NerveMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMitochondria, MuscleMyocardial ContractionMuscle RelaxationPeripheral NervesElectromyographyUterine ContractionMuscle DenervationMyofibrilsSatellite Cells, Skeletal MuscleNerve FibersRats, Sprague-DawleyHindlimbTime FactorsRats, WistarMuscular AtrophyMyocardiumOptic NerveHeart FailureMuscular DiseasesGuinea PigsMuscle SpindlesMotor NeuronsSarcomeresMuscle CellsNerve RegenerationMyocytes, Smooth MuscleGlycogenQuadriceps MuscleVasoconstrictionMuscle, StriatedSarcoplasmic ReticulumTracheaActinsDiaphragmTibial NerveMyosin Heavy ChainsCells, CulturedDose-Response Relationship, DrugAdenosine TriphosphateDogsPhysical ExertionMuscle WeaknessRNA, MessengerNeuromuscular JunctionPapillary MusclesKineticsAcetylcholineMyoblastsBiomechanical PhenomenaMyosin Light ChainsExerciseOculomotor MusclesNerve EndingsNeck MusclesPotassium ChlorideOxygen ConsumptionSignal TransductionPhosphorylationInsulinNerve BlockModels, BiologicalHeart DiseasesIsotonic ContractionRespiratory MusclesSarcolemmaCatsGlucoseFemoral NerveMice, Inbred C57BLAbdominal MusclesMedian NervePhysical Conditioning, AnimalCaffeineReflexRyanodine Receptor Calcium Release ChannelPeristalsisMolecular Sequence Data