COLORADO SPRINGS, Colo. (AP) _ The United States Olympic Committee said Friday that none of the positive results obtained during drug-testing at the recent U.S. Olympic Track and Field Trials involved the use of steroids by the athletes.

In addtion, USOC spokesman Mike Moran said that all of the athletes who tested positive at the Trials were found to have been using substances which the athletes had cleared prior to the testing procedures as being used for medical purposes.

Subsequent tests by the USOC were consistent with those declarations by the athletes.

All tests from the Track and Field Trials have now been completed, and while the final process of appeals is not yet completed, in all the appeals considered to this point, the use of the declared substances by the athletes has been excused and those athletes will not be subject to any penalties.

USOC chief medical officer Dr. Robert O. Voy had stated earlier this week that there had been some positive tests results from the Trials in Indianapolis.

Moran said the USOC will update the matter when the final set of appeals for the remaining athletes has been completed.