title: Circadian rhythm of peak expiratory flow rate in healthy north Indian men.
abstract: Peak expiratory flow rate (PEFR) variability follows a specific pattern in asthmatics as well as in healthy individuals. There is scarcity of data for Indian healthy subjects. The PEFR (L/min.) was measured with Wright's portable peak flow meter at 05:00, 8:00, 11:00, 14:00, 17:00, 20:00 and 23:00 hours in 42 healthy, non-smoking adults of age group between 18-26 years. The variability of PEFR revealed a circadian pattern. PEFR levels tend to increase from morning at 5:00 hours till evening at 17:00 hours, with peak PEFR in evening at 17:00 hours, after which there was a progressive fall in PEFR levels, till morning 5:00 hours. This study provides the preliminary reference data of circadian pattern of PEFR in healthy individuals.
authors.affiliation: Department of Physiology, King George's Medical University, Lucknow--226 003.
authors.forename: M
authors.initials: M
authors.lastname: Goyal
authors.forename: A
authors.initials: A
authors.lastname: Goel
authors.forename: P
authors.initials: P
authors.lastname: Kumar
authors.forename: M
authors.initials: M
authors.lastname: Bajpai
authors.forename: N S
authors.initials: NS
authors.lastname: Verma
authors.forename: S
authors.initials: S
authors.lastname: Kant
authors.forename: S
authors.initials: S
authors.lastname: Tiwari
mesh_terms: D000293:Adolescent; D000328:Adult; D002940:Circadian Rhythm / Q000502:physiology*; D006801:Humans; D007194:India; D008297:Male; D010366:Peak Expiratory Flow Rate / Q000502:physiology*; D012016:Reference Values