This formula will allow for management of insulin levels and carb intake for endurance cycling. All credit goes to Marcey Robinson, MS, RD, CDE, BC-ADM. Please use this at your own risk. This information is my strict adaptation of her practices. Google her to appreciate her knowledge of diabetes and sports!
Eat 50 grams carb breakfast 3 hours before ride.
- Dose at 1/2 to 2/3 reg. bolus.
- Replenish glycogen stores in muscles lost overnight
- Allow 3 hours for insulin to clear system
- Get up early to eat and return to sleep if possible
- Target BG levels of 130 to 160 at ride start.
- Reduce basal 20% at start of ride. If you are dropping 30-60 points per hour, your basal rate is too high. Do not stop your basal.
- In first 45 min- drink 20 oz sports drink with electrolytes, maltodextrin (complex carb) at 35 grams carb. Do not bolus.
- For each consecutive 45 min- eat 35 gram gel with Maltodextrin or drink sprt drink detailed in step 4. Do not bolus.
- Reduce basal up to 50% at hour 2-3. If you are dropping 30-60 points per hour, your basal rate is too high. For extreme endurance events, basal can remain at norm or even a little higher.
- For each consecutive hour where sport drink was not consumed, drink 20 OZ water.
- Carry simple carb gels for treating lows. 35 gram Honey Stingers.
- Eat 45 grams carbs and 45 grams protein post ride. Bolus at 50% to 65%.
- Keep basal lower for up around 24-36 hours post ride.
- Numbers vary up to 20% by individual.