TendonsMuscle, SkeletalAnkle JointMuscle ContractionAchilles TendonBiomechanical PhenomenaLocomotionMuscle Fibers, SkeletalAnkleRecruitment, NeurophysiologicalMusclesElectromyographyIsometric ContractionKneeLegMuscle ProteinsMuscle, SmoothMuscle, Smooth, VascularMuscle DevelopmentMuscle Fibers, Fast-TwitchPectoralis MusclesMuscle FatigueMuscle DenervationMuscle Fibers, Slow-TwitchMuscle SpindlesMyocytes, Smooth MuscleMitochondria, MuscleQuadriceps MuscleNeck MusclesOculomotor MusclesMuscle, StriatedHindlimbMuscle RelaxationGalliformesRespiratory MusclesMuscle WeaknessPapillary MusclesAxonsAbdominal MusclesMuscle CellsMasseter MuscleFacial MusclesMasticatory MusclesIntercostal MusclesElectric StimulationTorqueMuscular AtrophyMotor NeuronsRadial NerveFasciaReflex, StretchSatellite Cells, Skeletal MuscleMuscle Stretching ExercisesTectum MesencephaliPeroneal NerveThighPeripheral NervesConnective TissueMovementBundle of HisMuscular DiseasesRunningTime FactorsPsoas MusclesPhysical ExertionJointsMyofibrilsTemporal MuscleElastic ModulusConnectomeCatsRabbitsImmunohistochemistryGaitNerve Fibers, MyelinatedElasticityMicroscopy, ElectronCells, CulturedMyosin Heavy ChainsNerve FibersCalciumFlight, AnimalPharyngeal MusclesErgometryPinch StrengthRats, Sprague-DawleyNeural PathwaysDiaphragmAdaptation, PhysiologicalFibrillar CollagensPatellar LigamentHistocytochemistryFasciculationRats, WistarGlycogenExerciseModels, BiologicalGrasshoppersForelimbNeuromuscular Junction