Effect of Inhaled Technosphere Insulin vs RAA Insulin on Exercise-Induced Hypoglycemia in Adults With T1D Using Automated Insulin Delivery

This investigator-initiated study will enroll about 30 adults 18 to 65 years of age with type 1 diabetes (T1D) who are using the Tandem t:slim X2 insulin pump or Tandem Mobi insulin pump with Control-IQ or Control-IQ+ technology ("Control-IQ" which will refer to either Control-IQ or Control-IQ+). The study is being done to find out if inhaled insulin given for a meal is safer and better to use than a bolus of insulin through your pump when you exercise following a meal. Participants are asked to complete three study exercise visits in the clinic.