title: Epidemiological study: chronotype and daytime sleepiness before and during Ramadan.
abstract: Few epidemiological data have been reported on the relation between Ramadan fasting, life habits (meal frequency, sleep habits) and daytime sleepiness during Ramadan. This paper presents the results of a detailed study of the chronotype and daytime sleepiness before and during Ramadan. It was conducted on a sample of 264 subjects aged between 20 and 30 years. Results have revealed a significant decrease in the meal frequency during Ramadan compared with the control period. Before Ramadan, the majority of subjects woke up between 6 and 7 a.m. and went to sleep between 10 and 11 p.m. however, during Ramadan fasting, they woke up after 8 a.m. and preferred to go to sleep later (after midnight). Chronotype as evaluated by the Horne and Ostberg scale was changed significantly during Ramadan: an increase of the evening type and a decrease in the morning type of subjects was observed. Daytime sleepiness as evaluated by the Epworth Sleepiness Scale was significantly increased.
authors.affiliation: Faculty of Medicine and Pharmacy of Casablanca, Department of Pharmacology and Toxicology, Casablanca, Morocco.
authors.forename: M
authors.initials: M
authors.lastname: Taoudi Benchekroun
authors.forename: R
authors.initials: R
authors.lastname: Roky
authors.forename: J
authors.initials: J
authors.lastname: Toufiq
authors.forename: B
authors.initials: B
authors.lastname: Benaji
authors.forename: F
authors.initials: F
authors.lastname: Hakkou
mesh_terms: D000328:Adult; D001143:Arousal; D001833:Body Temperature Regulation; D002940:Circadian Rhythm / Q000502:physiology*; D004032:Diet; D004040:Dietary Carbohydrates / Q000008:administration & dosage; D004041:Dietary Fats / Q000008:administration & dosage; D004044:Dietary Proteins / Q000008:administration & dosage; D005221:Fatigue / Q000453:epidemiology* / Q000209:etiology; D005247:Feeding Behavior; D005260:Female; D005508:Food Deprivation; D006184:Habits; D006801:Humans; D007514:Islam; D008297:Male; D009018:Morocco; D012890:Sleep; D012892:Sleep Deprivation
chemical_list: D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins