title: Effect of isolation in a constant environment on periodicity of physiological functions and performance levels.
mesh_terms: D015068:17-Ketosteroids / Q000652:urine; D000328:Adult; D001831:Body Temperature; D002940:Circadian Rhythm; D006339:Heart Rate; D006801:Humans; D008950:MMPI; D008297:Male; D010507:Periodicity; D012119:Respiration; D012890:Sleep; D012934:Social Isolation; D014851:Wakefulness
chemical_list: D015068:17-Ketosteroids