Coffee Caffeine in Increased Alertness and Rapid Reaction in Healthy Individuals

Intake of coffee caffeine may have a potential effect in enhance alertness and rapid reaction, a renowned institute study suggested

Coffee, second to tea, is a popular and social beverage all over the world, particularly in the West, made from roasted bean from the Coffea plant, native to tropical Africa and Madagascar.

In a randomized, double-blind, parallel groups design to rate anxiety, alertness, and headache before and after 100 mg caffeine and again after another 150 mg caffeine given 90 min later, or after placebo on both occasions, researchers indicated that caffeine intake expressed a clean effect in elevated alertness in compared to placebo.


Further differentiation also found that caffeine did not increase alertness in low caffeine intake participants, and noncaffeine administrated to medium and high intake groups displayed a reduced alertness effect and caffeine abstinence reduced alertness and consumption in comparison to baseline.


Other, in the study of 30 healthy volunteers received equal volume drinks equivalent to either 1 or 2 cups of tea (containing 37.5 mg or 75 mg caffeine), or coffee (75 mg or 150 mg caffeine), or water, in a randomized five-way crossover design with drinks administered on four occasions during the day (0900, 1300, 1700 and 2300 hours), researchers found that there was no difference in all group in expression of alertness, but following the second beverage caffeinated coffee at 75 mg, there was a significantly improved reaction time (P<0.05), in compared to tea at the same dose and placebo.

Dr. Hindmarch I, the lead author said, " ingestion of caffeinated beverages may maintain aspects of cognitive and psychomotor performance throughout the day and evening when caffeinated beverages are administered repeatedly" and "This study also demonstrates that day-long tea consumption produces similar alerting effects to coffee, despite lower caffeine levels".


More importantly, in a total of 19 healthy volunteers ingested 400 ml black tea, coffee, caffeinated water, decaffeinated tea or plain water on three occasions through the day (0900, 1400 and 1900 hours), researchers filed the following reports
1. Caffeine ingestion was associated with a rapid (10 min) and persistent improvement of alertness and again independent of time of day, but did not acutely alter CFF threshold.
2. In comparison to caffeine consumed group, water, and the decaffeinated group expressed a steady decline in alertness (LARS) and cognitive capacity over the whole day.
3. Tea and coffee were similar on all measures, including alertness
4. Tea and coffee ingestion was associated with rapid increases in alertness and information processing capacity if the tea was drinking throughout the day, compared to other groups.


Taking all together, there is no doubt that coffee intake has an enormous and profound effect in improved alertness and rapid reaction if drinking throughout the day, but reduced intake or absence of coffee caffeine may cause the opposite effect.

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Author Biography
Kyle J. Norton (Scholar, Master of Nutrition, All right reserved)
Health article writer and researcher; Over 10.000 articles and research papers have been written and published online, including worldwide health, ezine articles, article base, health blogs, self-growth, best before it's news, the karate GB daily, etc.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Disilgold.com Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as international journal Pharma and Bioscience, ISSN 0975-6299.
Sources
(1) Association of the anxiogenic and alerting effects of caffeine with ADORA2A and ADORA1 polymorphisms and habitual level of caffeine consumption by Rogers PJ1, Hohoff C, Heatherley SV, Mullings EL, Maxfield PJ, Evershed RP, Deckert J, Nutt DJ.(PubMed)
(2) A naturalistic investigation of the effects of day-long consumption of tea, coffeeand water on alertness, sleep onset and sleep quality by Hindmarch I1, Rigney U, Stanley N, Quinlan P, Rycroft J, Lane J.(PubMed)
(2) The effects of black tea and other beverages on aspects of cognition and psychomotor performance by Hindmarch I1, Quinlan PT, Moore KL, Parkin C.(PubMed)