Annals of Biological Research
Abstract
Author(s): Jafar Ali Ghaderi
The world anti-doping organization removed caffeine from the banned list of substances in 2004; yet, research
shows over recent years caffeine has become one of the most widely used ergogenic aids by athletes. Caffeine is a
substance that is found naturally in many plants and is often found in many of the drinks and foods we consume.
Caffeine is often administered as a liquid or in a capsule, but new research has shown that caffeine gum has a faster
absorption rate and a higher relative bioavailability. The purpose of this study is to determine the Effect of caffeine
gum and capsule ingestion on blood lactate and glucose during mid-endurance running. Fifteen well-trained male
runners completed a double-blind, placebo controlled experiment. The runners (meanÃ?â??Ã?±SD] weight, height, age, and
percentage body fat were 64.7Ã?â??Ã?±4.91 kg, 174.5Ã?â??Ã?±2.73 cm, 21.7Ã?â??Ã?±4.76 years, and 13.7Ã?â??Ã?±5.08 %, respectively. Chewing
gum and capsule (5 mg.kg-1 of caffeine] or a placebo was administered at three time points (Thirty-five minutes
pre-exercise, 5 minutes pre-exercise, and immediately following exercise]. The participants were instructed to chew
caffeine gum for five minutes and swallow caffeine capsule. Participants raced 1500-m distance. Blood glucose and
lactate were measured via a finger prick in any three stages, 5 minutes pre-1500-m running, and immediately
following 1500-m running. The rest Interval between any measurement stages was one week. The results indicated
no significantly different between that blood glucose (p<0.05] and blood lactate (p<0.05] levels over time with the
different forms caffeine and versus the placebo. This was one of the first exercise studies conducted that
administered caffeine gum and should be used as a starting point for future research on caffeine gum and exercise.
