Cooper, D F Perception of effort in isometric and dynamic muscular contraction. [electronic resource] - European journal of applied physiology and occupational physiology Jul 1979 - 173-80 p. digital Publication Type: Journal Article ISSN: 0301-5548 Standard No.: 10.1007/BF00430009 doi Subjects--Topical Terms: AdultFemaleHumansIsometric ContractionMaleMathematicsMuscle ContractionMuscles--physiologyPerception--physiologyPhysical Exertion