Caffeine for the Sustainment of Mental Task Performance: by Committee on Military Nutrition Research, Food and Nutrition

By Committee on Military Nutrition Research, Food and Nutrition Board, Institute of Medicine

This document from the Committee on army food learn experiences the heritage of caffeine utilization, the metabolism of caffeine, and its physiological results. the consequences of caffeine on actual functionality, cognitive functionality and application, and relief of sleep deprivation impairments are mentioned in mild of contemporary clinical literature. The impression of caffeine intake on quite a few elements of healthiness, together with heart problems, replica, bone mineral density, and fluid homeostasis are reviewed. The behavioral results of caffeine also are mentioned, together with the impact of caffeine on response to emphasize, withdrawal results, and unsafe results of excessive intakes. The quantities of caffeine chanced on to reinforce vigilance and response time continually are reviewed and suggestions are made with recognize to quantities of caffeine acceptable for holding alertness of army group of workers in the course of box operations. ideas also are supplied at the desire for acceptable labeling of caffeine-containing supplementations, and schooling of army team of workers at the use of those supplementations. a quick overview of a few choices to caffeine is additionally supplied.

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The effects of caffeine on women have been examined in the context of its effects on menstrual function, interactions with oral contraceptives, pregnancy and fetal health, and postmenopausal health. , 1987). , 1999). , 1999). , 1980). The effects of newer oral contraceptives on caffeine half-life have not been studied. About this PDF file: This new digital representation of the original work has been recomposed from XML files created from the original paper book, not from the original typesetting files.

High-altitude exposure may augment the positive effects of caffeine on endurance performance. Exercise performance is dramatically reduced by altitude exposure, and maximal effort may be diminished by as much as 25 percent. Submaximal performance may be improved with acclimatization, but maximal effort does not normally recover (IOM, 1996). However, Fulco et al. (1994) showed that ingestion of caffeine (4 mg/kg) could increase the time to exhaustion in eight trained men riding a cycle ergometer at 80 percent of highaltitude VO2max (65 percent of sea-level VO2max) at 4,300 m, but not at sea level.

These same reviews concluded that there was little effect of caffeine on activities requiring high power outputs over a short time, such as lifting, carrying, and sprinting. Such activities utilize primarily anaerobic generation of adenosine triphosphate, a process that is probably not affected by caffeine. , 1996). , 1992). Response to caffeine ingestion may vary among studies as a consequence of the caffeine habits of participants. As mentioned elsewhere in this report, chronic use of caffeine results in habituation to some of its effects, possibly by up-regulation of adenosine receptors.

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Caffeine for the Sustainment of Mental Task Performance: by Committee on Military Nutrition Research, Food and Nutrition
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