Psoas MusclesYogaPsoas AbscessMusclesMuscle Fibers, SkeletalMuscle ContractionRabbitsSarcomeresIsometric ContractionMuscle, SkeletalMyosinsMyofibrilsMuscle ProteinsMuscle RelaxationMagnesium CompoundsMuscle, SmoothTroponin CPhotolysisAdenosine TriphosphateParaspinal MusclesMuscle, Smooth, VascularMuscle DevelopmentPhosphatesAdenosine DiphosphateBiophysical PhenomenaCalciumActomyosinMuscle Fibers, Fast-TwitchX-Ray DiffractionMuscle Fibers, Slow-TwitchTroponinBiophysicsRetroperitoneal SpaceKineticsActinsGlycerolBiomechanical PhenomenaMuscle FatigueMyosin SubfragmentsMuscle DenervationActin CytoskeletonRhodaminesMind-Body TherapiesElasticityModels, BiologicalMyocytes, Smooth MuscleMitochondria, MuscleAdenosine TriphosphatasesOsmolar ConcentrationNeck MusclesOculomotor MusclesStress, MechanicalMeditationMuscle, StriatedNational Institute of Arthritis and Musculoskeletal and Skin Diseases (U.S.)TemperatureMuscle SpindlesMuscle Stretching ExercisesRespiratory MusclesMuscle WeaknessPapillary MusclesTime Factors