Results 261 to 270 of about 104,016 (302)
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1984
Caffeine from natural sources has been consumed and enjoyed by people throughout the world for centuries, dating back to perhaps as early as the Paleolithic period. The widespread natural occurrence of caffeine in a variety of plants undoubtedly played a major role in the long-standing popularity of caffeine-containing products, especially beverages ...
J. J. Barone, H. Roberts
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Caffeine from natural sources has been consumed and enjoyed by people throughout the world for centuries, dating back to perhaps as early as the Paleolithic period. The widespread natural occurrence of caffeine in a variety of plants undoubtedly played a major role in the long-standing popularity of caffeine-containing products, especially beverages ...
J. J. Barone, H. Roberts
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Ad lib caffeine consumption, symptoms of caffeinism, and academic performance
American Journal of Psychiatry, 1981The authors explored the relationship between ad lib caffeine consumption in college students and the incidence of caffeinism, characterized by heightened anxiety, depression, and various psychophysiological reactions. Students were randomly selected from four groups (abstainers from caffeine and low, moderate, and high consumers).
K, Gilliland, D, Andress
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Biochemical validation of self-reported caffeine consumption during caffeine fading
Journal of Behavioral Medicine, 1988Increasing concern about caffeine as a drug with potential for abuse has resulted in the development of procedures for effecting reductions in caffeine consumption among heavy users. However, the reliability of reported findings may be questioned, since previous studies have relied on subject self-report as the principal measure of caffeine use.
J E, James +5 more
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Journal of Drug Education, 1990
The expectancies paradigm developed in alcohol research was used to study caffeine consumption and signs of caffeinism in two groups of college students. A survey questionnaire was developed to gather self-report data on expectations of caffeine-enhanced performance (EP-CAFF), level of beverage caffeine consumed daily, and DSM-111 caffeinism signs ...
J R, Bradley, A, Petree
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The expectancies paradigm developed in alcohol research was used to study caffeine consumption and signs of caffeinism in two groups of college students. A survey questionnaire was developed to gather self-report data on expectations of caffeine-enhanced performance (EP-CAFF), level of beverage caffeine consumed daily, and DSM-111 caffeinism signs ...
J R, Bradley, A, Petree
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Guidelines for safe consumption of caffeine
Nursing Older People, 2016'Guidelines for safe consumption of caffeine indicate that an intake of up to 400mg daily is safe for adults. Average tea consumption in the UK, at 2 to 3 servings daily, fits within this. Given the potential benefits of tea for health, consumption could rise to 8 servings daily and still be within safe limits'.
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Psychophysiological effects of habitual caffeine consumption
International Journal of Behavioral Medicine, 1994Caffeine is the most widely consumed pharmacologically active substance in the world, and a key issue concerning its possible implications for human health is whether it has persistent (i.e., chronic) physiological effects on habitual consumers. This study examined blood pressure, heart rate (HR), electromyogram (EMG), and skin conductance level (SCL ...
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Progress in clinical and biological research, 1985
This chapter provides details about the production, trade, and consumption of caffeine, which is probably the world's most widely used drug. The focus is on caffeine derived from coffee, which accounts for about 54% of all caffeine use, because other chapters in the volume give details of tea and cocoa consumption.
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This chapter provides details about the production, trade, and consumption of caffeine, which is probably the world's most widely used drug. The focus is on caffeine derived from coffee, which accounts for about 54% of all caffeine use, because other chapters in the volume give details of tea and cocoa consumption.
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Caffeine Consumption and Target Scanning Performance
Human Factors: The Journal of the Human Factors and Ergonomics Society, 1978Twenty-five minutes after ingesting one of three possible dosages (placebo, 200 mg, or 400 mg) of caffeine, 48 subjects individually participated in two short-term visual target scanning tasks (subject-paced and experimenter-paced). Assignment of subjects to treatment groups was made on the basis of a priori coffee consumption rates.
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Caffeine consumption and cardiovascular health
Nature Reviews Cardiology, 2022Rob M. van Dam, Frank B. Hu
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