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Carbs before exercise

Some slow acting carbs like nuts maybe ? Your BG levels will dictate if you should inject or not. Trial and error and test before, during and after exercise. Personally, I wouldn't inject for a snack as I'd rather go a little high than risk hypo during exercise.

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A banana or oat crackers are good for keeping bg up. I wouldn't inject insulin for exercise unless it has a tendency to raise your bg levels, if you exercise soon after a main meal you will need to reduce your bolus dose by around 25-50% (depending on the duration of the exercise of course and it's effect on your bg levels).
 
The purpose of having carbs for exercise is to counter exercise increasing the effectiveness of insulin in your blood stream (a healthy person will reduce insulin released during exercise but we are stuck with whatever basal appropriate for mostly sedentary activity we injected the previous night); as such high fat low carb foods like nuts which would raise BG over a period of time much longer than the exercise lasts for is of limited usefulness and neither should you bolus for any snacks you have for the purpose of rising BG levels.

However, so keep in mind that some types of exercise (short and high intensity) may actually increase BG - thus there is really no way around trial and error. Start with a small snack (high BG during exercise is better than hypo) and measure BG frequently; as you get to know how you'll react to the kinds of exercise you can adjust how much carbs you need and won't have to check all the time.
 
Shell1 said:
Any ideas on a good snack before exercise like gymnastics/ trampoline and should I give insulin for it?


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It really depends on what that sort of exercise does to your BG, have you done a before and after check? Lifting weights doesn't affect my bg, cycling drops it massively, easily 8-10 mmol an hour, and snowboarding raises it, presumably due to adrenalin.

It's really an individual thing, other than aerobic exercise which is bound to drop it and need carb fuelling. If it's aerobic you need to figure through trial and error the number of carbs per hour you need.

It's all pretty individual.
 
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