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| ID | Type | Description | Link |
|---|---|---|---|
| R21CA260360 | U.S. NIH Grant/Contract | View source |
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| Name | Class |
|---|---|
| National Cancer Institute (NCI) | NIH |
| University of Kansas Medical Center | OTHER |
| University of North Carolina, Charlotte | OTHER |
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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Condition 1 | Experimental | 1) Episodic future thinking; 2) Positive affect imagery; 3) Action planning; 4) High intervention dose |
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| Condition 2 | Experimental | 1) Episodic future thinking; 2) Positive affect imagery; 3) Action planning; 4) Low intervention dose |
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| Condition 3 | Experimental | 1) Episodic future thinking; 2) Positive affect imagery; 3) High intervention dose |
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| Condition 4 | Experimental | 1) Episodic future thinking; 2) Positive affect imagery; 3) Low intervention dose |
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| Condition 5 | Experimental | 1) Recent thinking; 2) Positive affect imagery; 3) Action planning; 4) High intervention dose |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Episodic future thinking | Behavioral | Participants will listen to a guided thinking task directing them to think about themselves at a future, positive event and to imagine the event in vivid and specific detail. |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Weekly Physical Activity Minutes Across 6 Weeks (accelerometer-assessed) | 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. | Assessed weekly at Weeks 1-6 |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Weekly Physical Activity Minutes Across 6 Weeks (self-reported) | 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. | Assessed weekly at baseline and at Weeks 1-6 |
| Measure | Description | Time Frame |
|---|---|---|
| Affective Response to Exercise | The Feeling Scale measures affective responses to exercise on a -5 to +5 scale with higher scores indicated a more positive affective response. It will be assessed during- and post-exercise for the in-person brisk walking sessions. Will be assessed as a putative mechanism. | Assessed weekly at baseline and at Weeks 1-6 |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Colin Lamb, BA | Contact | 2147681545 | colinl@smu.edu |
| Name | Affiliation | Role |
|---|---|---|
| Austin S. Baldwin, PhD | Southern Methodist University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Southern Methodist University | Recruiting | Dallas | Texas | 75205 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 36074550 | Derived | Baldwin AS, Lamb CL, Geary BA, Mitchell AD, Kouros CD, Levens S, Martin LE. Testing and Optimizing Guided Thinking Tasks to Promote Physical Activity: Protocol for a Randomized Factorial Trial. JMIR Res Protoc. 2022 Sep 8;11(9):e40908. doi: 10.2196/40908. |
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De-identified data will be made available, in addition to the study protocol, statistical analysis plan, informed consent, and analytic code. Data will be made available to interested parties after all the initial study analyses and outcomes have been published.
Data will be made available one year after study completion.
Researchers who provide a methodologically sound proposal and sign a data use agreement. Proposals should be submitted to Austin Baldwin.
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| ID | Term |
|---|---|
| D057185 | Sedentary Behavior |
| ID | Term |
|---|---|
| D001519 | Behavior |
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| ID | Term |
|---|---|
| D003276 | Contraceptives, Oral |
| ID | Term |
|---|---|
| D003271 | Contraceptive Agents, Female |
| D003270 | Contraceptive Agents |
| D012102 | Reproductive Control Agents |
| D045505 | Physiological Effects of Drugs |
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| Condition 6 | Experimental | 1) Recent thinking; 2) Positive affect imagery; 3) Action planning; 4) Low intervention dose |
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| Condition 7 | Experimental | 1) Recent thinking; 2) Positive affect imagery; 3) High intervention dose |
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| Condition 8 | Experimental | 1) Recent thinking; 2) Positive affect imagery; 3) Low intervention dose |
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| Condition 9 | Experimental | 1) Episodic future thinking; 2) Neutral imagery; 3) Action planning; 4) High intervention dose |
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| Condition 10 | Experimental | 1) Episodic future thinking; 2) Neutral imagery; 3) Action planning; 4) Low intervention dose |
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| Condition 11 | Experimental | 1) Episodic future thinking; 2) Neutral imagery; 3) High intervention dose |
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| Condition 12 | Experimental | 1) Episodic future thinking; 2) Neutral imagery; 3) Low intervention dose |
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| Condition 13 | Experimental | 1) Recent thinking; 2) Neutral imagery; 3) Action planning; 4) High intervention dose |
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| Condition 14 | Experimental | 1) Recent thinking; 2) Neutral imagery; 3) Action planning; 4) Low intervention dose |
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| Condition 15 | Experimental | 1) Recent thinking; 2) Neutral imagery; 3) High intervention dose |
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| Condition 16 | Experimental | 1) Recent thinking; 2) Neutral imagery; 3) Low intervention dose |
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| Positive affect imagery | Behavioral | Participants will listen to a guided thinking task directing them to think about positive feelings and associations about physical activity in specific, personal, and positive detail. |
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| Action planning | Behavioral | Participants will listen to a guided thinking task directing them to think about the remainder of their week and when, where, and how they plan to attain their remaining activity for the week. |
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| High dose | Behavioral | Participants will listen to the audio-recording with the guided thinking tasks 5 times/week. |
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| Recent thinking | Behavioral | Participants will listen to a guided thinking task directing them to think about a regular habit or activity they completed in the past week and to imagine that activity in specific and vivid detail. |
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| Neutral imagery | Behavioral | Participants will listen to a guided thinking task directing them to imagine physical sensations (i.e., movements, muscles used) of a routine, daily activity (non-physical activity). |
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| Low dose | Behavioral | Participants will listen to the audio-recording with the guided thinking tasks 1 time/week. |
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| Intrinsic Motivation for Exercise | The intrinsic subscale of the Behavioral Regulations in Exercise Questionnaire measures intrinsic motivation using a 0 to 4 response scale with higher scores indicating greater intrinsic motivation. It will be assessed after listening to the audio-recording in-person (post-intervention). Will be assessed as a putative mechanism. | Assessed weekly at baseline and at Weeks 1-6 |
| Delayed Discounting | The rapid delay discounting task will be assessed after listening to the audio-recording in-person (post-intervention). Will be assessed as a putative mechanism. | Assessed weekly at baseline and at Weeks 1-6 |
| Action Planning | The action planning scale (Sniehotta et al., 2005) measures action planning for physical activity on a 1 to 4 scale with higher scores indicating higher levels of planning. It will be assessed after listening to the audio-recording in-person (post-intervention). Will be assessed as a putative mechanism. | Assessed weekly at baseline and at Weeks 1-6 |
| Physical Activity Intentions | The physical activity intentions scale (Conner et al., 2017) measures intentions for physical activity on a 1 to 5 scale with higher scores indicating stronger intentions. It will be assessed after the in-person brisk walking session. Will be assessed as a putative mechanism. | Assessed weekly at baseline and at Weeks 1-6 |
| D020228 | Pharmacologic Actions |
| D020164 | Chemical Actions and Uses |
| D045506 | Therapeutic Uses |