title: Internal phase-angle differences in human circadian rhythms: causes for changes and problems of determinations.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001831:Body Temperature; D002940:Circadian Rhythm; D004780:Environment, Controlled; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D009043:Motor Activity