| I had something like that happen to me. I'd get a blood sugar rise usually two hours after my cardio workout, even though I tested normal immediately after I was done with the workout.
I finally figured out that if I eat dinner but don't bolus for the meal, then work out, I can set an extended bolus on my pump. Immediately after the workout, I figure out the carbs I've eaten for the meal, enter the number, and have it deliver the extended bolus over the two hour period after the workout. So far this has worked really well for me.
If I'm eating the meal after I work out instead of before, I eat a carb snack with a little protein before the workout to bring my blood sugars up into the 160 range. After the workout I'm usually in-range. The I just eat dinner and bolus the normal amount for the carbs.
~Lisa | 
