title: Effect of operator activity on circadian rhythm of physiological functions.
mesh_terms: D000328:Adult; D001341:Autonomic Nervous System / Q000502:physiology; D001775:Blood Circulation; D001831:Body Temperature; D002320:Cardiovascular Physiological Phenomena; D002940:Circadian Rhythm; D006801:Humans; D008875:Middle Aged; D009043:Motor Activity; D011674:Pulse; D013997:Time Factors; D014937:Work