Originally Posted by mdadams1

Have there been any studies done of 13 year old cyclists training too hard? Doing 100 mile plus rides with 2-3 mile hills with a 7-9 percent grade? Can anyone point me to some studies. I know a kid who does this kind of training frequently. He is very intense and self motivated. No one is pressuring him. Before he became a cyclist he was the say way running cross country. Extremely competitive in everything. I am concerned. Should I? His parents are in awe of his accomplishments....