This pilot study is a small sample (N=46) 16-week clinical trial with a follow-up after 24-weeks among sedentary adults \>60 y with a BMI \>25 kg/m2 to tests the impact of a hybrid artificial intelligence behavior change system (Companion) on physical activity. Participants will be randomized to a control and intervention group. All participants will engage in a proven supervised exercise program from week 1 to 16. Only the intervention group will receive Companion from week 1 to 16.
This is a single site randomized clinical trial to test if if Companion improves and sustains free-living physical activity and sedentary behaviors in adults \>60 y and improves health outcomes. Forty-six sedentary adults \>60 y with a BMI \>25 kg/m2 will be randomized to a control and intervention group. Both groups will undergo a 16-week supervised training program involving supervised training sessions 45-60 min, twice a week. The intervention group will additionally receive the two-way communication-based Companion meta intervention. Two-way communication during weeks 1 to 4, will focus on gathering information on the adult's motivations, preferences, habits, contexts, and usual behavior patterns to build typical individual behavior models. The model will be used to develop an adaptive physical active and sedentary behavior intervention prescription. Primary outcomes from Aim 1 and exploratory outcomes from Aim 2 will be measured at baseline and then after 16 and 24 weeks.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
51
Companion integrates wearable sensing with the smartphone to develop a behavior-aware, virtual system that uses a "human-in-the-loop" approach to enable meaningful two-way communication. Companion builds rich models of typical behavior using sensors and context sensitive ecological momentary assessment to deliver intervention components and behavior change strategies using socially engaging, contextually salient, and tailored text-message conversations in near-real-time.
Northeastern Univeristy
Boston, Massachusetts, United States
Physical Activity Hours Per Day Measured Using a Body-worn Accelerometer at Baseline
Total time spent being active will be measured using a body worn motion sensor (accelerometer) during waking hours over a period of one week. Measures for each day (hours) will be averaged to obtain a representative estimate of daily habitual behavior.
Time frame: Baseline
Physical Activity Hours Per Day Measured Using a Body-worn Accelerometer After 4 Months
Total time spent being active will be measured using a body worn motion sensor (accelerometer) during waking hours over a period of one week. Measures for each day (hours) will be averaged to obtain a representative estimate of daily habitual behavior.
Time frame: 4 months
Physical Activity Hours Per Day Measured Using a Body-worn Accelerometer After 6 Months
Total time spent being active will be measured using a body worn motion sensor (accelerometer) during waking hours over a period of one week. Measures for each day (hours) will be averaged to obtain a representative estimate of daily habitual behavior.
Time frame: 6 months
Sedentary Behavior Hours Per Day Measured Using a Body-worn Accelerometer at Baseline
Total time spent sedentary will be measured using a body worn motion sensor (accelerometer) during waking hours over a period of one week. Measures for each day (hours) will be averaged to obtain a representative estimate of daily habitual behavior.
Time frame: Baseline
Sedentary Behavior Hours Per Day Measured Using a Body-worn Accelerometer After 4 Months
Total time spent sedentary will be measured using a body worn motion sensor (accelerometer) during waking hours over a period of one week. Measures for each day (hours) will be averaged to obtain a representative estimate of daily habitual behavior.
Time frame: 4 months
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Sedentary Behavior Hours Per Day Measured Using a Body-worn Accelerometer After 6 Months
Total time spent sedentary will be measured using a body worn motion sensor (accelerometer) during waking hours over a period of one week. Measures for each day (hours) will be averaged to obtain a representative estimate of daily habitual behavior.
Time frame: 6 months