Using Real-Time Data Capture to Examine Affective Mechanisms as Mediators of Physical Activity Adherence in Interventions
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Physical Inactivity
- Sponsor
- University of Southern California
- Enrollment
- 280
- Locations
- 1
- Primary Endpoint
- Physical Activity: Step Count
- Status
- Recruiting
- Last Updated
- 10 months ago
Overview
Brief Summary
This early-phase trial will test intervention strategies to influence affective mechanisms underlying physical activity and determine whether changes in those mechanisms result in change in physical activity behavior among inactive adults who are overweight or obese.
Detailed Description
This ORBIT model phase 1 trial will examine whether affective mechanisms (1) can be experimentally manipulated in real-world settings; and (2) mediate the relationship between interventions and physical activity behavior. A novel physical activity intervention will be optimized by efficiently disentangling the effects of its core component and two enhancement components on affective mechanisms associated with physical activity engagement.
Investigators
Genevieve Dunton
Chief, Division of Health Behavior Research and Director, USC Real-Time Eating Activity and Children's Health (REACH) Lab
University of Southern California
Eligibility Criteria
Inclusion Criteria
- Not provided
Exclusion Criteria
- •Inability to provide informed consent due to cognitive disability
- •Inability to engage in one or more key treatment components, including those with medical conditions that preclude physical activity engagement or who cannot wear an accelerometer on the wrist or answer brief surveys on the smartwatch for any reason
- •Current pregnancy
- •Referred to the study by another participant or from Reddit.
Outcomes
Primary Outcomes
Physical Activity: Step Count
Time Frame: Daily total for weeks 1-19
Daily steps will be calculated from minute-level accelerometer data. Fitbit Versa 3 smartwatches with internal accelerometers are worn for the duration of the study period, except while bathing or charging. Only days with sufficient wear time (defined as ≥ 10-hours of valid data, where no more than 20-minutes per hour has a consecutive step count of zero) are used for analysis.
Physical Activity: Minutes
Time Frame: Daily total for weeks 1-19
Daily minutes of light, moderate, and vigorous physical activity will be calculated from minute-level accelerometer data. Fitbit Versa 3 smartwatches with internal accelerometers are worn for the duration of the study period, except while bathing or charging. Only days with sufficient wear time (defined as ≥ 10-hours of valid data, where no more than 20-minutes per hour has a consecutive step count of zero) are used for analysis.
Secondary Outcomes
- Affective Response(Max 2 per 60-min physical activity period during weeks 2-9 and weeks 12-19)
- Affectively-Charged Motivations(Up to once daily for weeks 2-9 and weeks 12-19)
- Anticipated Affect(Up to once daily for weeks 2-9 and weeks 12-19)