T1D & Your Young Child (Ages 2-10) 👶
Ch. 3/5 · Part 1/3
Preparing for Safe Physical Activity
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Questions about this content?
Alfred can go deeper on any point in this section.
Questions about this content?
Alfred can go deeper on any point in this section.
Kids are meant to move. Running, climbing, jumping, dancing — physical activity is essential for your child's growth, motor development, social skills, and mental health. Type 1 diabetes should never be a reason to keep your child on the sidelines.
But here's the reality: exercise changes blood sugar. Sometimes a lot. And when your child is 4 or 7, they can't always tell you how they feel. That's why preparation is the single most powerful tool you have.
The good news? With a simple routine before every activity, you can let your child play freely while keeping them safe.
Before any physical activity, always check your child's blood sugar. This is non-negotiable — even for 15 minutes on the playground.
This is the ISPAD 2024 recommended pre-exercise range for children with T1D. It gives enough "buffer" to absorb a drop without going low, without starting too high.
| Pre-Activity BG | What to Do |
|---|---|
| Below 126 mg/dL (7 mmol/L) | Give 15-30g fast carbs. Wait 15 minutes and recheck. Don't start until BG is above 126. |
| 126-180 mg/dL (7-10 mmol/L) | Green light — your child can start the activity. |
| 180-250 mg/dL (10-14 mmol/L) | Usually OK to start. Monitor more frequently. Don't give a correction bolus right before activity. |
| Above 250 mg/dL (14 mmol/L) | Check for ketones first. |
| Above 250 mg/dL WITH ketones | Do NOT exercise. Correct with insulin, hydrate, wait until ketones clear. |
Warning
Exercising with high blood sugar AND ketones is dangerous. It can worsen ketoacidosis. If BG is above 250 mg/dL before activity and the high is unexplained or not coming down, check ketones. A post-meal spike that's following its normal pattern back to target doesn't need a ketone check — that's just the timing gap between insulin action and digestion.
Mila is 6. Every Saturday, she has a 45-minute soccer practice at 10 AM. Her mom, Sophie, checks Mila's BG at 9:40 AM: it reads 105 mg/dL (5.8 mmol/L). That's below the 126 target, so Sophie gives Mila a small juice box (15g carbs) and a few crackers (10g carbs). At 9:55, she rechecks: 142 mg/dL (7.9 mmol/L). Mila is good to go.
Sophie learned this routine after Mila had a low during practice in September. It took one scary moment to build a habit that now takes less than 5 minutes.
Every time your child leaves for an activity — even at the park — a small bag should go with them. Here's your checklist:
Tip
Make duplicates. Keep one bag in the car, one at home ready to grab. Restock every Sunday. When it's routine, it's not a burden — it's just what you do.
There are a few situations where it's safer to wait:
These situations are temporary. They don't mean your child can't be active — just not right now.
What is the ISPAD 2024 recommended blood sugar target BEFORE physical activity for children?