Muscle Fibers, Slow-TwitchFatigueMusclesMuscle Fibers, SkeletalMuscle Fibers, Fast-TwitchHypertrophyMuscle ContractionMuscle, SkeletalMuscle FatigueMuscle DenervationHypertrophy, Left VentricularMuscle ProteinsFatigue Syndrome, ChronicCardiomegalyMotor NeuronsMental FatigueElectric StimulationMuscle DevelopmentNeural ConductionSarcoplasmic ReticulumMuscle, SmoothMyocardiumIsometric ContractionTime FactorsRana temporariaMyofibrilsCatsNerve FibersMuscle, Smooth, VascularMyosin Heavy ChainsRabbitsNeuromuscular JunctionDiaphragmCalcium-Transporting ATPasesCalciumSarcomeresElectromyographyMitochondria, MuscleMuscle SpindlesMuscle RelaxationMuscular AtrophyMuscular DiseasesPsoas MusclesRana pipiensAnuraDietary FiberOculomotor MusclesHypertrophy, Right VentricularPapillary MusclesQuadriceps MuscleMuscle WeaknessAction PotentialsMuscle, StriatedHindlimbMembrane PotentialsBiomechanical PhenomenaRespiratory MusclesRats, WistarRats, Sprague-DawleyOrgan SizeMotor EndplateMasseter MuscleMyocardial ContractionMyocytes, Smooth MuscleNeck MusclesSatellite Cells, Skeletal MuscleThoracicaHeartMyosinsMuscular Dystrophy, AnimalMolecular Sequence DataMyocytes, CardiacMuscle CellsCells, CulturedAbdominal MusclesBase SequenceCaffeineMasticatory MusclesHistocytochemistryMineral FibersIntercostal MusclesMice, Inbred mdxSarcolemmaStress, MechanicalSnakesHeart VentriclesPhysical EndurancePhysical ExertionMicroscopy, ElectronRanidaeFacial MusclesRNA, MessengerTorquePectoralis MusclesMice, Inbred C57BLModels, BiologicalRana esculentaTubocurarineDisease Models, AnimalCotton Fiber