Muscle ContractionMusclesMuscle, SkeletalExercise TestMuscle, SmoothMotion Pictures as TopicExercise TherapyExerciseMuscle ProteinsMuscle, Smooth, VascularMuscle Fibers, SkeletalExercise TolerancePhysical ExertionMuscle FatigueElectric StimulationMyocardial ContractionMuscle DevelopmentUterine ContractionElectromyographyMuscle RelaxationCalciumOxygen ConsumptionMuscle Fibers, Fast-TwitchPhysical EnduranceMuscle Fibers, Slow-TwitchTime FactorsRabbitsMuscle SpindlesMitochondria, MuscleMyocytes, Smooth MuscleMuscle DenervationTracheaGuinea PigsVasoconstrictionQuadriceps MuscleHeart RateMuscle, StriatedRespiratory MusclesNeck MusclesPapillary MusclesMyofibrilsBiomechanical PhenomenaHindlimbIsotonic ContractionMuscle WeaknessRestMyosinsAbdominal MusclesRats, Sprague-DawleyOculomotor MusclesMotor NeuronsRats, WistarPeristalsisPotassium ChlorideMyosin Light ChainsLegAcetylcholineGlycogenRegional Blood FlowTropomyosinTorqueActinsDose-Response Relationship, DrugLactic AcidSarcomeresMuscle Stretching ExercisesMuscle CellsTroponin CBlood PressureFacial MusclesResistance TrainingBicyclingNorepinephrineDogsGastrointestinal MotilityDiaphragmEnergy MetabolismReflexUrinary BladderMuscle TonusCarbacholMuscular DiseasesMasticatory MusclesAdenosine Triphosphaterho-Associated KinasesRunningModels, BiologicalPhosphocreatineNeuromuscular JunctionVasoconstrictor AgentsHeartMyocardiumPhenylephrineAdaptation, PhysiologicalCatsPhysical FitnessMuscle StrengthAnalysis of VarianceTroponinPhosphorylation