SarcomeresMusclesMuscle, SkeletalArmElectromyographyMyofibrilsConnectinMuscle ProteinsMuscle ContractionMuscle Fibers, SkeletalMuscle DevelopmentPsoas MusclesMuscle, StriatedMuscle, SmoothIsometric ContractionActininBiomechanical PhenomenaMyocardiumMuscle, Smooth, VascularMyosinsTenodesisTropomodulinMuscle DenervationRabbitsIsotonic ContractionMyosin Heavy ChainsMuscle RelaxationActin CytoskeletonMicroscopy, ElectronMuscle Fibers, Fast-TwitchMuscle Fibers, Slow-TwitchMuscle SpindlesRana temporariaCalciumMuscular DiseasesElbowActinsElasticityMasticatory MusclesDesminTime FactorsMuscle FatigueElectric StimulationOculomotor MusclesStress, MechanicalTropomyosinMuscle CellsMyocytes, CardiacMyocardial ContractionHeartAnuraProtein KinasesSupinationTendon InjuriesLaryngeal MusclesCells, CulturedMotor NeuronsTendonsMicromanipulationFlight, AnimalMyocytes, Smooth MuscleModels, BiologicalMitochondria, MuscleImmobilizationMuscle WeaknessRats, Sprague-DawleySarcolemmaNeck MusclesLegLIM Domain ProteinsArm InjuriesMuscular DystrophiesRats, WistarMicroscopy, ImmunoelectronRotator CuffElbow JointQuadriceps MuscleMasseter MuscleRespiratory MusclesRupturePapillary MusclesReflex, StretchTenotomyMicrofilament ProteinsMicroscopyNeedlesProtein IsoformsSarcoplasmic ReticulumPectoralis MusclesStress FibersMicroscopy, Phase-ContrastMicroscopy, FluorescenceFluorescent Antibody TechniqueTracheaBiophysical PhenomenaAgingChickensAbdominal MusclesExerciseAnimals, Newborn