Muscle ContractionMuscle, SkeletalMyofibrilsMusclesMuscle Fibers, SkeletalMuscle ProteinsIsometric ContractionTroponin CTroponinMyosinsMuscle FatigueMuscle, SmoothRabbitsTropomyosinCalciumElectric StimulationMuscle DevelopmentMuscle, Smooth, VascularMuscle Fibers, Fast-TwitchRegional Blood FlowSarcomeresMuscle Fibers, Slow-TwitchMitochondria, MuscleMuscle DenervationMuscle RelaxationPsoas MusclesConnectinMuscle, StriatedMyocardial ContractionMyocardiumElectromyographyMyocytes, Smooth MuscleActinsSatellite Cells, Skeletal MuscleMuscular AtrophyMuscular DiseasesMuscle SpindlesPapillary MusclesNeck MusclesQuadriceps MuscleActininOculomotor MusclesMuscle CellsMuscle WeaknessHindlimbUterine ContractionTime FactorsRespiratory MusclesMyosin Heavy ChainsBiomechanical PhenomenaCells, CulturedAbdominal MusclesGlycogenRats, Sprague-DawleyRats, WistarAdenosine TriphosphateSarcoplasmic ReticulumChickensKineticsMyosin SubfragmentsSarcolemmaDesminGuinea PigsPectoralis MusclesFacial MusclesMicroscopy, ElectronDiaphragmPhysical ExertionActomyosinMasticatory MusclesMyoblastsTracheaMotor NeuronsHeartMasseter MuscleRNA, MessengerMyosin Light ChainsAdenosine TriphosphatasesVasoconstrictionModels, BiologicalIntercostal MusclesPotassium ChlorideAnuraNeuromuscular JunctionActin CytoskeletonPhosphorylationTroponin IExerciseCreatine KinaseInsulinMuscular Dystrophy, AnimalDogsCaffeineDose-Response Relationship, DrugMolecular Sequence DataSignal TransductionMyoblasts, SkeletalAcetylcholineGlucoseStress, Mechanical