Coffee and Caffeine
From News for Swim Parents
Published by The American Swimming Coaches Association
5101 NW 21 Ave., Suite 200
Fort Lauderdale FL 33309
By Keith B. Wheeler, Ph.D.
And Angeline M. Cameron
Q: Will a cup of caffeinated coffee enhance athletic
performance? Does caffeine have any undesirable side affects? Why do
so many people drink coffee?
A: No, consuming one cup of caffeinated coffee will not enhance
athletic performance. Some studies have suggested that caffeine will
enhance performance under certain circumstances (ie, short-term
high-intensity or long-term moderate-intensity exercise). However, most
studies have demonstrated no effect of caffeine on
endurance and performance. In the studies that suggest an effect,
the caffeine consumption usually exceeded 400 mg before exercise. To
get this level of caffeine, you would have to consume approximately 4
cups (5 oz) of caffeinated coffee, 12 cups (5 oz) of tea, or 3 quarts of
cola.
Consuming caffeine can have some undesirable side effects, including
increased heart rate, digestive secretions, breathing rate, and urine
output. Caffeine also affects the central nervous system by increasing
restlessness. Other side effects include headaches, irritability,
insomnia, diarrhea, hyperactivity, and depression. Keep in mind also
that caffeine is recognized as a stimulant by the International Olympic
Committee, and if present in excessive amounts is considered a banned
substance.
Most people drink coffee because they like the taste, and it is a
socially acceptable ritual.
