期刊
FOOD AND CHEMICAL TOXICOLOGY
卷 94, 期 -, 页码 227-242出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fct.2016.06.007
关键词
Caffeine intake; Trends; 2-Day average; Consumption occasion; 30-Minute elapsed time; Energy drink
资金
- American Beverage Association
Caffeine consumption among US teenagers (13-17y), young adults (18-24y) and adults (25-29y) for a 10 year period was examined using NHANES 2003-12. Of the 85% who consume caffeine 84% consume caffeinated beverages. This percentage remained constant despite new caffeine sources. Less than 7.1% of the population consume energy drinks. While mean, caffeine intake among teenage caffeine consumers decreased from 62 to 55 mg/day (p-value = 0.018) over the 10-year period, no discernable trend was observed for other age groups. Caffeine intake from energy drinks increased, and was only statistically significant for age 18-24y accounting for <9% of total caffeine intake. Mean caffeine intake per consumption occasion was equivalent between coffee and energy drinks for teenagers and young adults. During a 30-min period mean caffeine consumption was similar when an energy drink was the only consumption event or when it occurred with other caffeinated beverage products suggestive of a substitution effect. Linear regression models of caffeine intake from energy drinks against caffeine from coffee, tea and soda among energy drink consumers in the upper 50th percentile shows a statistically significant inverse relationship (R2 = 28%, coffee: beta = -0.35, p < 0.001; tea: beta = -0.44, p < 0.001; soda: beta = -0.22, p = 0.036) and further supports the substitution concept. (C) 2016 The Author(s). Published by Elsevier Ltd.
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