First, the logic behind the numbers.
1. I want to eat breakfast 3 hours before the race so that most of the bolus insulin is out of my system by race time.
2. I want to be able to have a GU gel (20 carbs) without bolusing before the swim and again before the run.
3. I want to avoid lows at all cost but I also want to avoid the highs I was plagued with during each triathlon last summer.
I am planning to create a race day basal profile that I will start on race day and my basal rates will change at preset times so I don't have to remember to do it myself in the heat of the moment.
Here is the race day timeline based on estimated finish times of the swim, bike and run:
8:30am swim start (have a GU right before the swim)
9:00am bike start
10:15am run start (have second GU in transition zone before the run)
11:00am race finished
Here's the proposed basal profile and rationale
7:00am 60% basal rate - to prevent lows during the swim and the bike
8:30am - have a GU gel immediately before the start of the swim
8:45am 120% basal rate (to counteract the GU and the high that I would most likely have after the short swim)
9:00am 60% basal rate (to prepare for the run)
10:15am second GU gel
10:45am 120% basal rate - to prevent the post-race spike in blood sugar and to help deal with the GU
11:30am 50% basal rate - to prevent the lows I have in the hours after the race
2:30pm 100% basal rate - return to my regular basal profile
I may tweak this a bit more before race day. I want to factor in the delicious chocolate milk that they serve at the finish line but I'm not sure if I should adjust my basal rate in anticipation or just bolus for it.
I have no idea if this plan will make for a perfect BG race or make for three hours of this guy:
Meet the crazy diabetes rabbit
The only way to know is to try it. I promise that I'll check my blood sugar before, during and after. I promise that I'll carry plenty of emergency carbs with me and I won't have the GUs if I'm high.
And I promise to keep you all posted on how it went so we can all continue to learn from each other.
Warning: your diabetes may vary and I am not a doctor. Play with your basal profiles at your own risk.