T1D and cycling

[Lulu9101112]

So I've been cycling for a while to college/uni/school (Whatever you want to call it) but i'v'e noticed in the last week because I'm cycling faster than I used to that my blood sugars fine in the morning before I leave but then at lunch it drops down to hypo.
for example today it was 7.1 at breakfast and then at lunch it dropped down to 2.9 Even though I had a apple around break time 10.40am) and didn't do any insulin) before this when I wasn't cycling as fast as I do now. Does anyone know why this happens anything I could try and do to prevent it?

 

[Jaylee]

Hi, @Lulu9101112 ,

what time do you have breakfast before setting off for the Uni..?

 

[ianharding]

Hi, do you know what your BG was when you arrived at uni? If it was high, then maybe a less carby breakfast would last longer and stop you dropping too low by lunch. If your BG was a good level when you arrived, maybe slightly reducing breakfast insulin would help.
Ian

 

[Lulu9101112]

Hi, @Lulu9101112 ,

what time do you have breakfast before setting off for the Uni..?

7.30am

Hi, do you know what your BG was when you arrived at uni? If it was high, then maybe a less carby breakfast would last longer and stop you dropping too low by lunch. If your BG was a good level when you arrived, maybe slightly reducing breakfast insulin would help.
Ian

Nope as I don't test when I arrive at college because I usually leave 30 mins after breakfast and like when it's 8.30am the time I usually get to college. It's only been 1 hour since I ate breakfast.

 

[Jaylee]

7.30am

Nope as I don't test when I arrive at college because I usually leave 30 mins after breakfast and like when it's 8.30am the time I usually get to college. It's only been 1 hour since I ate breakfast.

Are you on MDI?

 

[Lulu9101112]

Are you on MDI?

What does that stand for?

 

[delmcp]

MDI stands Multiple Daily Injections. i.e. Basal & Bolus.

 

[GrantGam]

Does anyone know why this happens anything I could try and do to prevent it?

-Reduce your breakfast bolus dose
-Reduce you basal dose
-Eat some carbs just before or during your cycle
-A combination of any/all of the above.

Your likely having lows at lunch because exercise allows insulin to transfer glucose into your cells more easily. What this means is that you often need less insulin to do the same job when you've been exercising. Hence why I've suggested taking less insulin or eating more carbs.

 

[Lulu9101112]

MDI stands Multiple Daily Injections. i.e. Basal & Bolus.

Yeah I inject and test every time I eat and bedtime. So breakfast, lunch, dinner and bedtime.