The challenges of living with type 1 diabetes often stand in the way of getting enough exercise. Continuous blood sugar monitoring has revolutionized type 1 diabetes care but remains underutilized to sustainably support exercise and related behaviors. This remote participation-based research will develop a mobile application that delivers personalized encouragement and data-driven health insights based upon patterns in blood sugar, exercise, mood, and sleep, to assist people with type 1 diabetes in exercising more frequently and confidently. You do not need to live in Connecticut to participate, as there will be no required in-person visits during the study.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
NONE
Enrollment
60
Participants will receive a free Garmin smartwatch and a free program membership providing exercise coaching + personalized feedback about the relationship among their insulin, carbohydrates, exercise, sleep, and blood sugar.
Wear a fitness watch and keep daily health diary
Yale School of Medicine
New Haven, Connecticut, United States
RECRUITINGWeekly exercise duration
Minutes/week. Measured by blinded hip watch and periodic interviews. 0 minutes/week is the lowest value, 150 minutes/week meets clinically recommended amounts.
Time frame: 20 weeks
Weekly exercise volume
Kilocalories, determined by minutes and intensity. Measured by blinded hip watch and periodic interviews. A person achieving 150 minutes per week will achieve around 1,200 - 2,000 kilocalories per week.
Time frame: 20 weeks
Weekly exercise days
Days/week. Measured by blinded hip watch and periodic interviews. 0 days/week is the lowest value, 3-7 days/week meets clinically recommended amounts.
Time frame: 20 weeks
Glucose
The measurable range is 20-400 mg/dL. It is quantified by average levels, time above/within/below the target range of 70-180 mg/dL, and coefficient of variation.
Time frame: 20 weeks
Body mass index
Calculated from body weight and height (kilograms per meters squared)
Time frame: 20 weeks
Waist circumference
Measured in centimeters at umbilicus
Time frame: 20 weeks
Blood pressure
Systolic and diastolic values in mmHg. Values above 130 / 85 are considered hypertensive range. Measured on home monitor in duplicate
Time frame: 20 weeks
Sleep disturbance
NIH PROMIS (Patient-Reported Outcomes Measurement Information System) sleep disturbance survey. Scores given in t-score reflecting value relative to population.
Time frame: 20 weeks
Sleep-related impairment
NIH PROMIS (Patient-Reported Outcomes Measurement Information System) sleep-related impairment survey. Scores given in t-score reflecting value relative to population.
Time frame: 20 weeks
Affective motivation states
Cravings for Rest and Volitional Energy Expenditure (CRAVE) survey of motivation states for physical activity. Scores range from 0 (not at all) to 10 (more than ever).
Time frame: 20 weeks
Fear of hypoglycemia
Survey with subscales of fear-related behavior and worry respectively. Scores range from 0 (never) to 4 (almost always).
Time frame: 20 weeks
Fear of hyperglycemia
Survey with subscales of glucose decisions, lifestyle decisions, and worry. Scores range from 1 (never) to 5 (always).
Time frame: 20 weeks
Exercise self-efficacy
Asks about confidence to achieve exercise goals. Scores range from 0 (not confident) to 10 (very confident).
Time frame: 20 weeks
Exercise self-regulation
Survey of reasons for motivation to exercise. Participants rate possible reasons with scores ranging from 1 (not at all true) to 7 (very true).
Time frame: 20 weeks
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.