Factorial Trial Testing Guided Thinking Tasks to Optimize a Physical Activity Intervention
Not Applicable
- Conditions
- Physical Inactivity
- Interventions
- Behavioral: Episodic future thinkingBehavioral: Positive affect imageryBehavioral: Action planningBehavioral: Low doseBehavioral: Recent thinkingBehavioral: High doseBehavioral: Neutral imagery
- Registration Number
- NCT05235360
- Lead Sponsor
- Southern Methodist University
- Brief Summary
The objective of this study is to optimize a novel, audio-recorded physical activity intervention that is scalable. Using principles of the Multiphase Optimization Strategy (MOST) framework, a full factorial study will test the unique and combined effects of different intervention components to identify which combination of components is optimal for increasing physical activity and mechanisms by which the components are or are not effective. This information will inform decisions about an optimal intervention package that is effective, efficient, and minimizes participant burden.
- Detailed Description
Eligible participants who provide informed consent will be enrolled in a 6-week study. At the baseline session, participants will be randomized to listen to a brief audio-recording of different guided thinking tasks. The audio-recordings are based on combinations of four different intervention components that will be tested in a 2 (positive affect imagery vs. neutral) x 2 (episodic future thinking vs. recent thinking) x 2 (action planning: yes, no) x 2 (dose: high vs. low) factorial trial. Participants will also complete a 30-minute brisk walking session on a treadmill. Participants will return for weekly visits in which they again listen to their assigned audio-recording and complete a 30-minute brisk walking session.
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 192
Inclusion Criteria
- Adults ages 18-64
- Not currently meeting physical activity guidelines (<150 minutes/week of self-reported moderate-to-vigorous physical activity)
- Capable of providing informed consent
- Access to a smartphone with active data plan
- Willing to attend all study visits and comply with the protocol
- Conversant in English
Exclusion Criteria
- BMI > 40
- orthopedic problems that would limit physical activity
- self-reported coronary artery disease, stroke, COPD, chronic bronchitis, emphysema, diabetes
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- FACTORIAL
- Arm && Interventions
Group Intervention Description Condition 2 Positive affect imagery 1) Episodic future thinking; 2) Positive affect imagery; 3) Action planning; 4) Low intervention dose Condition 5 Action planning 1) Recent thinking; 2) Positive affect imagery; 3) Action planning; 4) High intervention dose Condition 1 Episodic future thinking 1) Episodic future thinking; 2) Positive affect imagery; 3) Action planning; 4) High intervention dose Condition 3 Positive affect imagery 1) Episodic future thinking; 2) Positive affect imagery; 3) High intervention dose Condition 4 Episodic future thinking 1) Episodic future thinking; 2) Positive affect imagery; 3) Low intervention dose Condition 4 Positive affect imagery 1) Episodic future thinking; 2) Positive affect imagery; 3) Low intervention dose Condition 5 Positive affect imagery 1) Recent thinking; 2) Positive affect imagery; 3) Action planning; 4) High intervention dose Condition 3 Episodic future thinking 1) Episodic future thinking; 2) Positive affect imagery; 3) High intervention dose Condition 4 Low dose 1) Episodic future thinking; 2) Positive affect imagery; 3) Low intervention dose Condition 1 Action planning 1) Episodic future thinking; 2) Positive affect imagery; 3) Action planning; 4) High intervention dose Condition 2 Action planning 1) Episodic future thinking; 2) Positive affect imagery; 3) Action planning; 4) Low intervention dose Condition 2 Low dose 1) Episodic future thinking; 2) Positive affect imagery; 3) Action planning; 4) Low intervention dose Condition 5 Recent thinking 1) Recent thinking; 2) Positive affect imagery; 3) Action planning; 4) High intervention dose Condition 6 Recent thinking 1) Recent thinking; 2) Positive affect imagery; 3) Action planning; 4) Low intervention dose Condition 6 Low dose 1) Recent thinking; 2) Positive affect imagery; 3) Action planning; 4) Low intervention dose Condition 1 Positive affect imagery 1) Episodic future thinking; 2) Positive affect imagery; 3) Action planning; 4) High intervention dose Condition 1 High dose 1) Episodic future thinking; 2) Positive affect imagery; 3) Action planning; 4) High intervention dose Condition 2 Episodic future thinking 1) Episodic future thinking; 2) Positive affect imagery; 3) Action planning; 4) Low intervention dose Condition 3 High dose 1) Episodic future thinking; 2) Positive affect imagery; 3) High intervention dose Condition 5 High dose 1) Recent thinking; 2) Positive affect imagery; 3) Action planning; 4) High intervention dose Condition 8 Recent thinking 1) Recent thinking; 2) Positive affect imagery; 3) Low intervention dose Condition 11 Episodic future thinking 1) Episodic future thinking; 2) Neutral imagery; 3) High intervention dose Condition 12 Low dose 1) Episodic future thinking; 2) Neutral imagery; 3) Low intervention dose Condition 6 Positive affect imagery 1) Recent thinking; 2) Positive affect imagery; 3) Action planning; 4) Low intervention dose Condition 6 Action planning 1) Recent thinking; 2) Positive affect imagery; 3) Action planning; 4) Low intervention dose Condition 7 Recent thinking 1) Recent thinking; 2) Positive affect imagery; 3) High intervention dose Condition 12 Episodic future thinking 1) Episodic future thinking; 2) Neutral imagery; 3) Low intervention dose Condition 14 Low dose 1) Recent thinking; 2) Neutral imagery; 3) Action planning; 4) Low intervention dose Condition 15 Recent thinking 1) Recent thinking; 2) Neutral imagery; 3) High intervention dose Condition 7 High dose 1) Recent thinking; 2) Positive affect imagery; 3) High intervention dose Condition 8 Positive affect imagery 1) Recent thinking; 2) Positive affect imagery; 3) Low intervention dose Condition 9 Episodic future thinking 1) Episodic future thinking; 2) Neutral imagery; 3) Action planning; 4) High intervention dose Condition 9 High dose 1) Episodic future thinking; 2) Neutral imagery; 3) Action planning; 4) High intervention dose Condition 10 Episodic future thinking 1) Episodic future thinking; 2) Neutral imagery; 3) Action planning; 4) Low intervention dose Condition 11 High dose 1) Episodic future thinking; 2) Neutral imagery; 3) High intervention dose Condition 8 Low dose 1) Recent thinking; 2) Positive affect imagery; 3) Low intervention dose Condition 9 Neutral imagery 1) Episodic future thinking; 2) Neutral imagery; 3) Action planning; 4) High intervention dose Condition 13 Action planning 1) Recent thinking; 2) Neutral imagery; 3) Action planning; 4) High intervention dose Condition 13 Neutral imagery 1) Recent thinking; 2) Neutral imagery; 3) Action planning; 4) High intervention dose Condition 16 Neutral imagery 1) Recent thinking; 2) Neutral imagery; 3) Low intervention dose Condition 7 Positive affect imagery 1) Recent thinking; 2) Positive affect imagery; 3) High intervention dose Condition 9 Action planning 1) Episodic future thinking; 2) Neutral imagery; 3) Action planning; 4) High intervention dose Condition 10 Action planning 1) Episodic future thinking; 2) Neutral imagery; 3) Action planning; 4) Low intervention dose Condition 10 Neutral imagery 1) Episodic future thinking; 2) Neutral imagery; 3) Action planning; 4) Low intervention dose Condition 10 Low dose 1) Episodic future thinking; 2) Neutral imagery; 3) Action planning; 4) Low intervention dose Condition 13 Recent thinking 1) Recent thinking; 2) Neutral imagery; 3) Action planning; 4) High intervention dose Condition 14 Action planning 1) Recent thinking; 2) Neutral imagery; 3) Action planning; 4) Low intervention dose Condition 11 Neutral imagery 1) Episodic future thinking; 2) Neutral imagery; 3) High intervention dose Condition 12 Neutral imagery 1) Episodic future thinking; 2) Neutral imagery; 3) Low intervention dose Condition 13 High dose 1) Recent thinking; 2) Neutral imagery; 3) Action planning; 4) High intervention dose Condition 14 Recent thinking 1) Recent thinking; 2) Neutral imagery; 3) Action planning; 4) Low intervention dose Condition 14 Neutral imagery 1) Recent thinking; 2) Neutral imagery; 3) Action planning; 4) Low intervention dose Condition 15 Neutral imagery 1) Recent thinking; 2) Neutral imagery; 3) High intervention dose Condition 15 High dose 1) Recent thinking; 2) Neutral imagery; 3) High intervention dose Condition 16 Recent thinking 1) Recent thinking; 2) Neutral imagery; 3) Low intervention dose Condition 16 Low dose 1) Recent thinking; 2) Neutral imagery; 3) Low intervention dose
- Primary Outcome Measures
Name Time Method Change in Weekly Physical Activity Minutes Across 6 Weeks (accelerometer-assessed) Assessed weekly at Weeks 1-6 Amount of weekly moderate-to-vigorous (MVPA) minutes (i.e., minutes of MPVA weighted by intensity) will be determined from accelerometers (ActiGraph wGT3X-BT) worn for one-week periods for six consecutive weeks.
- Secondary Outcome Measures
Name Time Method Change in Weekly Physical Activity Minutes Across 6 Weeks (self-reported) Assessed weekly at baseline and at Weeks 1-6 Amount of weekly self-reported MVPA (i.e., minutes of MPVA weighted by intensity) will be determined using the 7-day Physical Activity Recall (PAR) interview.
Trial Locations
- Locations (1)
Southern Methodist University
🇺🇸Dallas, Texas, United States