MusclesMuscle ContractionMuscle, SkeletalIsometric ContractionMuscle, SmoothMuscle Fibers, SkeletalPapillary MusclesMuscle SpindlesMuscle ProteinsIntercostal MusclesBiomechanical PhenomenaMuscle FatigueElectromyographyMuscle, Smooth, VascularSarcomeresMuscle DevelopmentTetanyMuscle RelaxationPectoralis MusclesMuscle Fibers, Fast-TwitchIsotonic ContractionElectric StimulationCatsQuadriceps MuscleReflex, StretchMyofibrilsStress, MechanicalMuscle Stretching ExercisesAbdominal MusclesTendonsMyocardial ContractionDiaphragmAequorinMuscle DenervationAnkle JointElasticityMuscle Fibers, Slow-TwitchAnkleTime FactorsTarsus, AnimalRibsMyocytes, Smooth MuscleMitochondria, MuscleTorqueCalciumThighDiacetylCockatoosHindlimbRabbitsRana temporariaNeck MusclesOculomotor MusclesTracheaMotor Neurons, GammaMuscle, StriatedMuscle TonusAnuraRana pipiensMotor NeuronsLength of StayRespiratory MusclesMuscle WeaknessCarnivoraKneeDecerebrate StateDogsModels, BiologicalLegPhysical ExertionMuscle CellsFerretsMyocardiumFlight, AnimalHeartMovementMasseter MuscleAction PotentialsRespiratory MechanicsPostureMasticatory MusclesFacial MusclesArmLocomotionSpinal Nerve RootsMuscular AtrophyAdaptation, PhysiologicalProprioceptionMechanoreceptorsSatellite Cells, Skeletal MuscleFunctional Residual CapacityRats, WistarNeurons, AfferentMuscular DiseasesPsoas MusclesVentricular FunctionEnergy MetabolismSwimmingPotassium ChlorideKinetics