FORREST, D W Association between muscular tension and work output. [electronic resource] - British journal of psychology (London, England : 1953) Nov 1960 - 325-33 p. digital Publication Type: Journal Article ISSN: 0007-1269 Standard No.: 10.1111/j.2044-8295.1960.tb00755.x doi Subjects--Topical Terms: HumansMuscle TonusMusclesThinking