What effect would pure oxygen have on olympic sprinters?

tried it in 1960. it was a disaster. stupid idea. ask your sports doctor. sprinters dont need it. it works in reverse. makes you weaker afer a while speeds up everyting, burns up sugar and you legs are weaker. i didnt expect that. i had some dumb a. coach in high school. he was a teacher, igned to be track coach knew nothing. dont even think about it. if you get in tip top shape you do not need that oxygen for the sprints. never need but a a few breaths and ou are finished. well, i told you. check itout with a real pro. i ams just an old hardly has been.