piqaboo wrote:[quote = "barfle"]I don't believe they test anyone in any sport for caffiene,
endurance olympic sports at least discussed testing for caffeine levels several years ago and I believe it was implemented (cross country skiing etc). I could google and check, but where's the fun in that>?
Caffeine frees up triglycerides or somesuch, making them easier and more accessible for use as fuel by the muscles.
The International Olympic Committee currently lists caffeine as a restricted drug. Urinary levels up to a concentration of12 mg/liter are acceptable, representing casual use. Levels above this are viewed as achieved through a deliberate attempt at doping by the athlete. Approximately 1000mg of caffeine (about 8 cups of coffee) would be required to exceed the current IOC limit, but it is very important to note that people can metabolize caffeine at very different rates. Differences in metabolism, medications, and certain diseases may significantly alter the rate in which caffeine is cleared from the body. Some athletes have come close to flunking the drug test after ingesting only 350mg.
Sidebar information from a reliable website: (Piqaboo...you are correct about caffiene's effect on the body's ability to burn fat):
Despite considerable research in this area, the role of caffeine as a performance enhancing drug is still controversial. Some of the data are conflicting, which is in part due to how the experimental studies were designed and what methods were used. However, there is general agreement in a few areas:
Caffeine does not appear to benefit short term, high intensity exercise (eg. sprinting)
Caffeine can enhance performance in endurance sports.
Glycogen is the principal fuel for muscles and exhaustion occurs when it is depleted. A secondary fuel, which is much more abundant, is fat. As long as there is still glycogen available, working muscles can utilize fat. Caffeine mobilizes fat stores and encourages working muscles to use fat as a fuel. This delays the depletion of muscle glycogen and allows for a prolongation of exercise. The critical time period in glycogen sparing appears to occur during the first 15 minutes of exercise, where caffeine has been shown to decrease glycogen utilization by as much as 50%. Glycogen saved at the beginning is thus available during the later stages of exercise. Although the exact method by which caffeine does this is still unclear, caffeine caused sparing in all of the human studies where muscle glycogen levels were measured. The effect on performance, which was observed in most experimental studies, was that subjects were able to exercise longer until exhaustion occurred.
In addition to the beneficial effects on muscle, caffeine may alter the perception of how hard you are working. During testing, athletes are asked to judge their effort, which is referred to as the rating of perceived exertion (RPE). Some studies have yielded significantly lower RPE's -- less fatigue -- when the athlete used caffeine. Other studies have not found this effect. Obviously, the RPE is very subjective, and there are many things that may influence it.