Studies on the fatigue in shipyard crane operators.
D000328:Adult; D002490:Central Nervous System / Q000503:physiopathology; D005221:Fatigue / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D009326:Naval Medicine; D009790:Occupations; D010275:Parasympathetic Nervous System / Q000503:physiopathology