title: Biorhythm theory and asthma.
abstract: The hypothesis that bronchial asthma might follow a biorhythmic pattern was tested in 25 asthmatics with moderate to severe obstruction who completed daily diaries of respiratory symptoms and medication use. Biorhythm cycles (for 23-, 28- and 33-day periods) were calculated. Analysis of scores of medication use or respiratory symptomatology failed to demonstrate any relationship between asthma and biorhythm cycles or any other periodicity.
mesh_terms: D000293:Adolescent; D000305:Adrenal Cortex Hormones / Q000627:therapeutic use; D000328:Adult; D000368:Aged; D001249:Asthma / Q000175:diagnosis* / Q000188:drug therapy; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010507:Periodicity
chemical_list: D000305:Adrenal Cortex Hormones