title: Effect of natural light-dark cycle on biorhythms in polar scientists.
mesh_terms: D015062:11-Hydroxycorticosteroids / Q000652:urine; D015068:17-Ketosteroids / Q000652:urine; D000328:Adult; D000864:Antarctic Regions; D001794:Blood Pressure; D001831:Body Temperature; D002302:Cardiac Output; D002940:Circadian Rhythm; D004231:Diuresis; D006339:Heart Rate; D006801:Humans; D008297:Male; D011188:Potassium / Q000032:analysis / Q000652:urine; D012463:Saliva / Q000032:analysis; D012964:Sodium / Q000032:analysis / Q000652:urine
chemical_list: D015062:11-Hydroxycorticosteroids; D015068:17-Ketosteroids; D012964:Sodium; D011188:Potassium