Background & Aims: Caffeine intake in a convenience sample of U.S. college students (N = 1248) was surveyed at five geographically-dispersed United States (U.S.) universities.
Methods: Intake from coffee, tea, soft drinks, energy drinks, gums, and medications was assessed. Associations between caffeine intake and demographic variables including sex, age, race/ethnicity, family income, general health, exercise, weight variables and tobacco use were examined. Reasons for use of caffeine-containing products were assessed.
Results: Caffeine, in any form, was consumed by 92% of students in the past year. Mean daily caffeine consumption for all students, including non-consumers, was 159 mg/d with a mean intake of 173 mg/d among caffeine users. Coffee was the main source of caffeine intake in male (120 mg/d) and female (111 mg/d) consumers. Male and female students consumed 53 vs. 30 mg/d of caffeine in energy drinks, respectively, and 28% consumed energy drinks with alcohol on at least one occasion. Students provided multiple reasons for caffeine use including: to feel awake (79%); enjoy the taste (68%); the social aspects of consumption (39%); improve concentration (31%); increase physical energy (27%); improve mood (18%); and alleviate stress (9%).
Conclusions: As in the general U.S. population, coffee is the primary source of caffeine intake among the college students surveyed. Energy drinks provide less than half of total daily caffeine intake but more than among the general population. Students, especially women, consume somewhat more caffeine than the general population of individuals aged 19-30 y but less than individuals aged 31-50 y.
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http://dx.doi.org/10.1016/j.clnu.2018.04.004 | DOI Listing |
Nutr Metab Cardiovasc Dis
December 2024
Department of Basic Medical Sciences, Faculty of Medicine and Health Sciences, Rovira i Virgili University, Escorxador, 43003, Reus, Spain. Electronic address:
Beckground And Aims: Individuals with a higher body fat percentage may have higher serum levels of caffeine and its metabolites and process caffeine more slowly than individuals with a lower body fat percentage, so the aim of this study is to compare the occurrence of positive and negative effects of caffeine in nonobese and obese women.
Methods And Results: One hundred and sixty women were included in the study. Body fat was determined using the mBCA 515 SECA analyzer.
Int J Mol Sci
December 2024
Institute of Health & Environment, Seoul National University, Seoul 08826, Republic of Korea.
Weightlifting demands explosive power and neuromuscular coordination in brief, repeated intervals. These physiological demands underscore the critical role of nutrition, not only in optimizing performance during competitions but also in supporting athletes' rigorous training adaptations and ensuring effective recovery between sessions. As weightlifters strive to enhance their performance, well-structured nutritional strategies are indispensable.
View Article and Find Full Text PDFPediatr Allergy Immunol
January 2025
EPIUnit-Institute of Public Health, University of Porto, Porto, Portugal.
Background: We aimed to investigate the association between maternal caffeine intake during pregnancy and asthma in children by 10 years of age.
Methods: We considered 5585 mother-child pairs enrolled in a population-based birth cohort. Consumption of regular and decaffeinated coffee, black and green tea, and cola beverages before and during pregnancy was obtained through face-to-face interviews within 72 h after giving birth, and total caffeine intake (mg/day) was estimated.
Food Chem Toxicol
January 2025
Military Nutrition Division, US Army Research Institute of Environmental Medicine, Natick, MA, USA. Electronic address:
Caffeine is a popular stimulant, predominantly consumed from beverages. The caffeinated beverage marketplace is continually evolving resulting in considerable interest in understanding the impact caffeinated beverages have on levels of intakes. Therefore, estimates of caffeine intakes in the U.
View Article and Find Full Text PDFJ Chiropr Med
December 2024
Post-Graduate Nutrition Program, Faculty of Nutrition, Federal University of Alagoas, Maceió, Brazil.
Objective: The study aimed to assess responsiveness to the effects of acute caffeine intake after 8 weeks of Pilates intervention in healthy older adults.
Methods: Fifteen healthy older adults performed physical performance regarding daily practice, strength, and balance tests after ingestion of acute 5 mg/kg of caffeine or placebo before and after Pilates training.
Results: The caffeine intake reduced, regardless of Pilates training, the time in 10-m walk test (before placebo vs caffeine, 6.
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