Muscle Fibers, Fast-TwitchMusclesMuscle Fibers, Slow-TwitchMuscle Fibers, SkeletalMuscle, SkeletalMuscle ContractionMuscle DenervationMuscle ProteinsSarcoplasmic ReticulumCalcium-Transporting ATPasesMuscle DevelopmentRabbitsIsometric ContractionMyostatinMuscle, SmoothCalciumMuscular AtrophyRana temporariaMuscle StrengthNerve FibersMyofibrilsMitochondria, MuscleMuscle, Smooth, VascularQuadriceps MuscleHindlimbElectric StimulationNeuromuscular JunctionSarcopeniaElectromyographyMuscle FatigueTime FactorsExerciseMyosin Heavy ChainsDiaphragmResistance TrainingSarcomeresMuscle SpindlesPsoas MusclesPhysical EnduranceAnuraRana pipiensMotor NeuronsDietary FiberOculomotor MusclesMuscle RelaxationHypertrophyGlycogenMuscular DiseasesPhysical ExertionPapillary MusclesMembrane PotentialsAction PotentialsMuscle, StriatedMuscle WeaknessMotor EndplateAdaptation, PhysiologicalCreatineThoracicaAgingRespiratory MusclesMasseter MuscleNeck MusclesOrgan SizeMuscular Dystrophy, AnimalMyocytes, Smooth MuscleRats, Sprague-DawleyLegMyosinsBiomechanical PhenomenaSatellite Cells, Skeletal MuscleOxygen ConsumptionRegional Blood FlowMasticatory MusclesAbdominal MusclesMineral FibersCaffeineIntercostal MusclesSnakesElectric Stimulation TherapyHistocytochemistryMice, Inbred mdxInsulinSarcolemmaRanidaeLactic AcidMuscle CellsRana esculentaCatsGlucose Transporter Type 4Facial MusclesMice, Inbred C57BLKineticsNeural ConductionRats, WistarTubocurarineMicroscopy, ElectronBody CompositionCotton FiberPectoralis MusclesGlucose