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To learn about individual glycemic response to physiological and psychological conditions across a diverse population, the investigators will collect sensor and lifestyle data directly from participants as they engage in daily activities. The investigators will collect real-time glucose data from a continuous glucose monitor (CGM) system; accelerometer, aggregated activity, and sleep data from a wrist-worn activity tracker; mood and experiential data; and food information. Non-sensor data will be collected using a paper log, or via a study app when available.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| CGM and Activity Tracker | Experimental | Subjects receive a continuous glucose monitor (CGM) and activity tracker and are instructed to record daily activities and psychological data. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Dexcom continuous glucose monitor | Device | Continuous glucose monitors (CGMs) record subjects glucose levels |
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| Measure | Description | Time Frame |
|---|---|---|
| Glucose Level (mg./dl.) | Estimated glucose concentration (mg./dl.) sampled every five minutes by a continuous glucose monitor (CGM). | 20 days per participant |
| Measure | Description | Time Frame |
|---|---|---|
| Activity level (steps per hour) | Activity level (steps per hour) as determined from data from wrist-worn accelerometer | 20 days per participant |
| Food Consumption (type and quantity) | Food items as described by user in food logs, along with time of consumption. |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Savvysherpa, LLC | Minnetonka | Minnesota | 55343 | United States |
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| Fitbit activity tracker | Device | Activity trackers will record subjects' physical activity, heart rate, and sleep. |
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| Subjects record daily activity | Behavioral | Subjects will record their daily activities, either on paper or on a secure texting app. |
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| Subjects record psychological state | Behavioral | Subjects will record their psychological state, either on paper or on a secure texting app. |
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| 20 days per participant |
| Activities of daily living (free form) | Participants may log any activity of daily living they choose, including social interactions, house work, and leisure activities. Activities are described by users and logged in interval form with start-time and end-times. | 20 days per participant |
| Psychological state (free-form) | Participants may log any psychological information they choose including mood, energy level, or cognitive function. Psychological states are described by users and logged with time or interval in which that psychological state was experienced. | 20 days per participant |
| Sensor wear time (wear / no-wear intervals) | Participants will log intervals in which they are and are not wearing the CGM over the course of their participation in the study. | 20 days per participant |
| Transmitter life expectancy (number of minutes) | In cases where participants wear sensors until the end of the transmitter's life, the number of minutes transmitter was operational. | 20 days per participant |