Muscle ContractionMuscle, SkeletalMusclesMuscle Fibers, SkeletalIsometric ContractionMuscle ProteinsTroponin CTroponinMuscle FatigueMuscle, SmoothMyosinsTropomyosinElectric StimulationRabbitsCalciumMuscle, Smooth, VascularMuscle DevelopmentRegional Blood FlowNeckMuscle Fibers, Fast-TwitchHead and Neck NeoplasmsMuscle Fibers, Slow-TwitchMitochondria, MuscleMuscle DenervationMuscle RelaxationSciatic NerveElectromyographyMyocytes, Smooth MuscleSatellite Cells, Skeletal MuscleMuscle SpindlesMuscular AtrophyMuscle, StriatedMyofibrilsHindlimbOculomotor MusclesNeck MusclesMuscular DiseasesMyocardial ContractionQuadriceps MusclePeripheral NervesMuscle WeaknessMuscle CellsNeck PainUterine ContractionPapillary MusclesRespiratory MusclesRats, Sprague-DawleyTime FactorsRats, WistarAbdominal MusclesNerve FibersMotor NeuronsGlycogenGuinea PigsFacial MusclesDiaphragmOptic NerveActinsSarcomeresMyosin Heavy ChainsCells, CulturedBiomechanical PhenomenaNeuromuscular JunctionMasticatory MusclesTracheaPhysical ExertionMasseter MuscleMyoblastsNerve RegenerationPsoas MusclesSarcoplasmic ReticulumRNA, MessengerVasoconstrictionMyocardiumIntercostal MusclesAdenosine TriphosphateKineticsDose-Response Relationship, DrugTibial NerveExerciseAcetylcholineInsulinSignal TransductionModels, BiologicalPhosphorylationCatsMuscular Dystrophy, AnimalPotassium ChlorideDogsGlucoseNerve EndingsMyoblasts, SkeletalPectoralis MusclesPhysical EnduranceSarcolemmaMice, Inbred C57BLOxygen ConsumptionMembrane PotentialsCaffeineMolecular Sequence Data