Jennifer Ordoñez, a Newsweek journalist who is also a Type 1 diabetic, reported on her experience at a triathlon training camp geared for diabetics. After reading her report, I was curious as to why hypoglycemia would cause a diabetic to fail the VO2 max test.

Nobody likes failing tests - especially when it comes to something as important as VO2 max. VO2 max is the maximum amount of oxygen a person uses while exercising at their limit for one minute. If you are in shape, your muscles will use a lot of oxygen to create energy. The prime source of energy for the body comes from blood sugar. When Jennifer took her VO2 test her blood sugar was falling and she failed. Apparently when blood sugar is falling the body puts itself into energy lockdown which compromises even conditioned athletes VO2 max.

Hypoglycemia causes muscles to fatigue quicker. Muscle fatigue is the result of inadequate oxygen availability. Prevention of hypoglycemia is one of the major objectives of adequate blood sugar when you are about to work out. By maintaining optimal blood sugar, you can assure a better level of exercise performance. I know better than to tell you what to do. But as a friendly reminder: make sure you've fueled up adequately before you hit the gym or the open road to work on your VO2 max.

Scientists in Germany are reporting development of a urine test that finally can identify athletes who misuse certain kinds of insulin in an illicit attempt to enhance performance.

An article scheduled to appear in an April edition of Analytical Chemistry says it is possible to detect the misuse of insulin in a urine sample. Scientists had not attempted to develop a test in the past because of the presumption that it was impossible to detect misuses of insulin. Because insulin is rationed and used efficiently by the body, a byproduct of insulin would be theoretically undetectable. However, with the advent of the newer long-acting insulin analogues, scientists are now able to identify degradation product in the urine.

The test does not identify residue from the use of two other forms of long-duration insulin. However, the test does identify the misuse of Lantus, manufactured by Sanofi-aventis. Determination of long-acting insulin analogues in urine is especially helpful for doping control purposes. The procedure provides a fast and reliable way to identify the misuse of the long-acting insulin analogue LAN in regular doping control specimens.