Parkrun effect on BG

June 30 2019

 I seem to comprehend the details of carb counting, and insulin injection, but am having trouble with the big picture.
I downloaded an app for my phone called "mySugr". It really helps with turning all the details  and data into usable information. It does require many entries a day to give the app enough data, and this is a PITA. But then I guess that having diabetes is also a PITA...and having one leg is a PITA.... and worrying about cancer is a PITA, and being 68 years old is a PITA.

Yesterday was Saturday, and Parkrun day. I awoke to 6.8 BG. I made my standard breakfast of oatmeal and blueberries, and put it in a Tupperware box for later. I spent an hour getting the leg on right, and blister pads in place, and allignment of the ankle versus the knee perfect, and walked around the yard in the dark for a while making sure all was working OK.
I arrived at the Park run an hour early. This allowed me to walk lots at speed to get warmed up, and make sure the stump was seated all the way. I walked fast for about 1.5 kms, then stopped at the car and ate breakfast a half hour before the start. The oatmeal seems to peak the BG at about one hour, and because it is low GI, the BG will stay high for another hour.
So hopefully I'll not go low BG for the run, and the hour after.
All my planning seemed  to work. I finished the Parkrun in 1 hour 3 minutes, and BG was 8.3. The oatmeal usually pushes up the BG by about 5 mmol/L. A 5 km fast walk usually reduces the BG by about 4 mmol/L. I was expecting a BG of  about 7.5 at the finish. It was a bit high at 8.3.

Before bed, mySugr shows my data for the Saturday at Carbs=95, average BG=7.4, bolus=0, basal=10ui.

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This morning BG was 8.5mmol/L. I don't know why so high.
My calculations for breakfast went like this:
Target BG is 6.5, so I am 2mmol/L high. 1ui of Novorapid should lower BG by 2.7.
A nartjie=11g carbs, oatmeal =30g carbs, and blueberries= 8g carbs for a total of 49g. 3.2 ui of Novorapid should correct that.
So in total I need 4.2ui of Novorapid.

Novorapid is slow. I don't know why they call it "rapid". It seems to peak in about 2 hours from injection. A few days ago I took it 15 minutes before the meal, and it did nothing to reduce the spike of 13mmol/L. It only reduced the BG after about 1 hour 45 minutes later.
This morning I took 4ui at 30 minutes before breakfast.
At 1 hour after breakfast, BG was 13.7. After 1 hr 30 min, Novorapid has yet to do anything.
At 2 hours after breakfast, (2:30 after bolus) my BG was 10.0. Novorapid seems to be doing something.
At 3 hours after breakfast, BG 7.8.
At 4 hours after breakfast , BG was 6.9.

This is very similar to the profile seen when no bolus of insulin is used. Is Insulin doing anything???