After reading this thread, I had to post this- I am the father of a Type 1 and I agree 100% with Martin001. IanKatz may have a program that works for him, but allowing BG to get into the 240+ range for a long period of time is dangerous. I have been the primary care giver and diabetic manager for my son who was diagnosed at age 8 (18 now) with Type 1. He played hockey and baseball. His BG would shoot up during hockey and his performance would drop off-almost like hitting a brick wall. We began testing more frequently and tried to maintain his BG in the 120-160 range at all times during games. This gave him good performance and his A1C is under 6.8. Hockey would flood his blood with glycogen which drove up the BG; he would take insulin (humalog, 1-2 units) during games which kept him in balance. The risk was that after games he would go very low (under 40) unless he consumed carbs and did not completely cover them with insulin. His lantus needs were about 24-25 units per day. Intense excercise with Type 1 is definitely a balancing act that requires much thought and analysis. Get some good medical advice and pay attention to your own experience-chart results, carb intake and insulin levels. Diabetes within competition sports is a challenge but can be managed. If you are a Type 1, don't let diabetes stand in the way. There are many resources available to help. Actually, the most difficult transition for BG management was between regular exercise periods and lower levels of exercise (end of hockey and start of baseball).