BackElectromyographyMuscle, SkeletalLumbosacral RegionTendonsPostureTorsoAbdominal MusclesNeck MusclesTendon InjuriesMuscle FatigueAchilles TendonLow Back PainBiomechanical PhenomenaMuscle ContractionPostural BalanceMusclesMovementLumbar VertebraeTendon TransferMuscle ProteinsMuscle, SmoothPseudomonadaceaeMuscle Fibers, SkeletalRoseobacterMuscle, Smooth, VascularMuscle DevelopmentPatellar LigamentTendinopathySpineRuptureMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchMuscle SpindlesMyocytes, Smooth MuscleOculomotor MusclesMitochondria, MuscleQuadriceps MuscleMuscle, StriatedMuscle WeaknessMuscle RelaxationRespiratory MusclesPapillary MusclesIsometric ContractionRotator Cuff