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Titre : | Daily Patterns of Caffeine Intake and the Association of Intake with Multiple Sociodemographic and Lifestyle Factors in US Adults Based on the NHANES 20072012 Surveys (2019) |
Auteurs : | Harris Lieberman ; Sanjiv Agarwal ; Victor Fulgoni |
Type de document : | Article |
Dans : | Journal of the academy of nutrition and dietetics (Vol. 119, n° 1, 2019) |
Article en page(s) : | p. 106-114 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Caféine ; Ethnologie ; Fatigue mentale ; Professions ; Races ; Vigilance |
Résumé : |
Abstract
Background Caffeine increases alertness when consumed in single servings of various products including coffee, tea, soft drinks, and energy drinks. Although not a nutrient, caffeine is consumed by 90% of the adult population in the United States. Objective This study examined the daily pattern of caffeine intake and its relationship to multiple demographic variables. Methods Data from the National Health and Nutrition Examination Survey (NHANES) 20072012 (adults aged 19+ years; n=16,173) were used to determine the time of day at which caffeine is consumed and demographic factors associated with intake. Regression analyses characterized factors associated with caffeine intake including sex, age, ethnicity, education, smoking status, physical activity, employment status, total work hours, alcohol, and energy intake. Results Mean adult per capita caffeine intake was 169±4 mg/d (mean±standard error). Most caffeine (70%) was consumed before noon, often at breakfast, and intake decreased progressively over the day, with little consumed after 9:00 pm. Intake was associated with age, ethnicity, smoking status, total calorie intake, and work hours (P Conclusion Most caffeine is consumed in the morning, when alertness is lowest, and very little in the evening before sleep. Ethnicity and age were the variables most strongly associated with intake; work hours, occupation, energy and alcohol intake, and smoking were also associated with intake. Because caffeine increases alertness, it is not surprising that its pattern of consumption and factors associated with its intake vary from those of most other food constituents. |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S2212267218318276 |