Muscle ProteinsMusclesMuscle, SkeletalMyocardiumHeartMyocytes, CardiacMuscle, SmoothMuscle Fibers, SkeletalMethylhistidinesPhenylalanineMuscle DevelopmentMuscle ContractionMyofibrilsPapillary MusclesMuscle, Smooth, VascularMyocardial ContractionMuscular AtrophyConnectinMuscle Fibers, Fast-TwitchLeucineAmino Acids, EssentialAmino AcidsCardiac OutputSarcomeresMuscle Fibers, Slow-TwitchCalciumQuadriceps MuscleRabbitsMuscle DenervationMitochondria, MuscleTime FactorsInsulinArrhythmias, CardiacMuscle FatigueHeart VentriclesMuscular DiseasesTroponinMyosin Heavy ChainsMuscle CellsRats, Sprague-DawleyTroponin CCardiac Surgical ProceduresMyocytes, Smooth MuscleSarcopeniaAmino Acids, Branched-ChainKineticsAgingCardiomegalyDeath, Sudden, CardiacCells, CulturedSarcoplasmic ReticulumMyosinsMuscle WeaknessTroponin ITropomyosinMuscle RelaxationNeck MusclesOculomotor MusclesRats, WistarActinsLegMuscle, StriatedRNA, MessengerIsometric ContractionDogsCardiac MyosinsMuscle SpindlesDystrophinChickensSignal TransductionSarcolemmaRespiratory MusclesExerciseCardiomyopathiesPhosphorylationResistance TrainingProtein KinasesRyanodine Receptor Calcium Release ChannelAnimals, NewbornCachexiaCreatine KinaseMolecular Sequence DataHeart DiseasesMyostatinTOR Serine-Threonine KinasesGene Expression RegulationOrgan SizeDietary ProteinsEnergy MetabolismBody WeightAbdominal MusclesProtein BiosynthesisCardiac Pacing, ArtificialMuscular Dystrophy, AnimalSKP Cullin F-Box Protein LigasesWeight LiftingModels, BiologicalTroponin TGuinea PigsMice, Inbred C57BL