Exercise on the iLet

When you exercise, your insulin needs can change significantly. Your iLet does not know that you are exercising. Your iLet will continue to increase or decrease insulin dosing in response to your changing CGM glucose levels as usual.

Before Exercise

• Always make sure to have fast-acting carbohydrates available to prevent or treat hypoglycemia. Carry emergency glucagon with you to treat severe hypoglycemia.
• Make sure your CGM alarms are turned on and the volume is set to a level that you can hear.
• Consider pre-activity CGM glucose levels.
  • If blood sugar is high: The iLet will increase insulin delivery, which could lead to an increased risk of hypoglycemia while exercising.
  • If blood sugar is low: Treat with fast-acting carbs.
• If you plan to eat carbs to raise your glucose before exercising, disconnect from the iLet and pause insulin delivery.
  • This way, the iLet cannot deliver insulin and your glucose will rise from the carbs in the meal or snack as you intended.
  • If you don’t disconnect and pause, the iLet may automatically increase insulin delivery in response to your rising CGM glucose levels. This will cause you to have more insulin working in your body while you are exercising, increasing your risk of hypoglycemia during and after exercise – exactly what you were trying to avoid!

During exercise:

While exercising, you have two options:

1. Disconnect from the iLet and Pause Insulin

• • Make sure you can still monitor your CGM glucose and hear your CGM alerts.
  • Remember to reconnect to the iLet and restart insulin when you are finished exercising. Staying disconnected for too long can result in hyperglycemia and development of ketones.

1. Stay connected to the iLet

• • If staying connected, do not “pre-load” with carbs to raise your glucose level.
  • Treat with rapid-acting carbs as needed.

For more information, please click here to access the iLet Quick Reference Guide or User Guide.

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