For young people, families, coaches and diabetes teams
Most young people with diabetes can take part in physical activity. The practical challenge is planning for the way activity can change glucose during exercise and for several hours afterwards.
Quick answer
The response to activity depends on the type, duration and intensity of exercise, recent food, insulin, glucose level, fitness and individual patterns. A school plan should explain monitoring, access to fluids and fast-acting carbohydrate, and what to do when symptoms do not match the sensor reading.
Key points
- Discuss PE and sports routines with the diabetes team before a new season or major change in training.
- Make sure the student and staff know where supplies, low-glucose treatment and emergency instructions are kept.
- Plan for warm-up, competition, travel, delayed meals and post-exercise glucose changes.
Why exercise and blood glucose matters
Physical activity can improve fitness, confidence and wellbeing, but its effect on glucose is not identical from one session to the next. Duration, intensity, recent insulin, food, heat, stress and the type of activity all matter. Some changes occur during exercise; others appear several hours later.
The safest plan is based on the athlete’s own patterns and clinical advice. It should cover monitoring, access to water and fast-acting carbohydrate, device or infusion-site problems, delayed meals, travel and the signs that mean activity should stop. The aim is confident participation, not exclusion.
A practical step-by-step plan
1. Discuss PE and sports routines with the diabetes team before a new season or major change in training
Discuss PE and sports routines with the diabetes team before a new season or major change in training. Match the plan to the type and timing of activity. A short skills session, endurance event and high-intensity competition may produce different glucose patterns. A useful check is to ask: What should be checked before, during and after activity?
2. Make sure the student and staff know where supplies, low-glucose treatment and emergency instructions are kept
Make sure the student and staff know where supplies, low-glucose treatment and emergency instructions are kept. Make treatment and monitoring accessible at the point of activity. The student should not have to leave the venue or wait for an unavailable adult during a glucose problem. A useful check is to ask: What symptoms should prompt stopping exercise?
3. Plan for warm-up, competition, travel, delayed meals and post-exercise glucose changes
Plan for warm-up, competition, travel, delayed meals and post-exercise glucose changes. Consider what happens after the session as well as during it. Recovery food, travel, sleep and delayed glucose changes may need a place in the plan. A useful check is to ask: How will supplies be carried at the field, pool or gym?
4. Record recurring patterns for review rather than making unsupervised medication changes
Record recurring patterns for review rather than making unsupervised medication changes. Bring repeated patterns to the diabetes team. Data from training can inform an individual adjustment, but it should not be used to invent a universal dose. A useful check is to ask: Who can help if the usual coach or nurse is absent?
What good support looks like
Good support helps the athlete take part with confidence. Coaches and school staff know where supplies are, what symptoms mean activity should stop and who to contact. The plan also considers travel, heat, delayed meals and glucose changes after the session.
Patterns should be reviewed with the diabetes team in context. The athlete is not expected to solve every change alone, and one unusual reading should not automatically lead to a major treatment adjustment.
A real-life test for the plan
Imagine that the circumstances around sports participation with diabetes change at short notice. The usual routine is disrupted, a key person is unavailable, a device or supply cannot be used, or the symptoms do not match what was expected. A robust arrangement should still show where the current instructions are kept, who can make the next decision, how essential information will be shared and when professional advice is needed. It should not depend on memory or an improvised treatment change.
Rehearse the plan by asking What should be checked before, during and after activity? and What symptoms should prompt stopping exercise? The answers should name a person, place, communication route or decision point. If they only describe what normally happens, add a backup for delays, absences, technology failure and unexpected symptoms. A written fallback does not need to be long, but it should be clear to someone who does not know the usual routine. This short rehearsal often finds practical gaps before they become stressful or unsafe.
Common mistakes to avoid
- Using the same plan for every sport, training session or competition.
- Leaving supplies somewhere the athlete cannot reach quickly.
- Focusing only on glucose during activity and missing delayed changes.
- Continuing activity despite concerning symptoms, ketones or dehydration.
Questions to discuss
- What should be checked before, during and after activity?
- What symptoms should prompt stopping exercise?
- How will supplies be carried at the field, pool or gym?
- Who can help if the usual coach or nurse is absent?
Keep the activity plan with the athlete’s diabetes instructions and record useful patterns from training, competition, travel and recovery.
Frequently asked questions
What should be checked before, during and after activity?
Discuss PE and sports routines with the diabetes team before a new season or major change in training. The answer should be specific to the person and setting rather than copied from a general checklist. Confirm who will act, what information or supplies are needed, and what the backup will be if the usual arrangement fails. Review that answer whenever the circumstances affecting sports participation with diabetes change.
What symptoms should prompt stopping exercise?
Make sure the student and staff know where supplies, low-glucose treatment and emergency instructions are kept. The answer should be specific to the person and setting rather than copied from a general checklist. Confirm who will act, what information or supplies are needed, and what the backup will be if the usual arrangement fails. Review that answer whenever the circumstances affecting sports participation with diabetes change.
How will supplies be carried at the field, pool or gym?
Plan for warm-up, competition, travel, delayed meals and post-exercise glucose changes. The answer should be specific to the person and setting rather than copied from a general checklist. Confirm who will act, what information or supplies are needed, and what the backup will be if the usual arrangement fails. Review that answer whenever the circumstances affecting sports participation with diabetes change.
When to get urgent help
Stop activity and follow the individual plan if there are symptoms of low glucose, severe hyperglycaemia, ketones, dehydration, chest symptoms, fainting or unusual breathing difficulty. Seek urgent help for severe symptoms.
Do not wait for a routine appointment if there is severe hypoglycaemia, loss of consciousness, a seizure, repeated vomiting, marked dehydration, difficulty breathing, significant ketones, suspected diabetic ketoacidosis or another immediate safety concern. Use the person’s emergency plan and local emergency services.
The bottom line
For sports participation with diabetes, clarity matters more than an exhaustive checklist. Discuss PE and sports routines with the diabetes team before a new season or major change in training. A useful next action is straightforward: Make sure the student and staff know where supplies, low-glucose treatment and emergency instructions are kept. Record anything that still needs clarification. The strongest plan is one that a patient, family member, clinician or staff member can actually follow when the day becomes busy or unexpected.
Related Livingdiabetes guides
- Getting started with exercise and diabetes
- Exercising safely with diabetes complications
- A practical summer activity guide for diabetes
Sources and further reading
- CDC: Physical Activity and Diabetes
- CDC: Managing Diabetes at School
- ADA Standards of Care 2026: Children and Adolescents
- ADA: Diabetes Medical Management Plan
This article is for general education. It does not replace an individual diabetes medical management plan, diagnosis or advice from a qualified healthcare professional.