Building and Sustaining Exercise Habits for Adults With Type 1 Diabetes

Inclusion criteria:

• 30-65 years old inclusive

• Diagnosis with type 1 diabetes (T1D) or other insulin deficiency diabetes (latentautoimmune disease of adulthood, diabetes secondary to pancreatitis)

• Less than 1.0 exercise sessions per week

• Smartphone ownership

• English literacy

• Under regular care by a healthcare provider (1+ appointments per year)

• Home Broadband wireless Internet or cell phone network

• Using continuous glucose monitor (CGM) and sharing data with medical record for atleast 6 weeks

• Using insulin pump or pen and sharing data with medical record for at least 6 weeks

Exclusion criteria:

• Diabetic ketoacidosis not clearly related to pump site failure in past 6 months

• >1 episode of severe hypoglycemia (altered mental and/or physical status requiringassistance from another person for recovery) in past 6 months

• A1c ≥10.0%

• Resting blood pressure >160mmHg systolic or >100 mmHg diastolic.

• Myocardial infarction or angina in past 12 months

• Uncontrolled arrhythmia (e.g., atrial fibrillation with rapid ventricular response,new onset atrial fibrillation, ventricular tachycardia, escape rhythms)

• Congestive heart failure (stage 3 or 4)

• Exercise-induced asthma (not controlled on inhalers)

• Chronic obstructive pulmonary disease (requiring home oxygen)

• Renal failure

• Pregnancy

• Cognitive impairment

• Severe retinopathy or neuropathy.

• Other chronic disease or physical disability that would influence exerciseintervention (e.g., recent spinal surgery)