title: Nature of force-velocity relation in heart muscle.
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D002415:Cats; D006321:Heart / Q000502:physiology*; D066298:In Vitro Techniques; D007700:Kinetics; D009119:Muscle Contraction; D009210:Myofibrils / Q000502:physiology; D010210:Papillary Muscles / Q000502:physiology; D013314:Stress, Mechanical; D013696:Temperature; D013997:Time Factors