NCT05235360

Factorial Trial Testing Guided Thinking Tasks to Optimize a Physical Activity Intervention

Factorial Trial to Test Unique and Combined Effects of Guided Thinking Tasks to Optimize a Physical Activity Intervention Among Underactive Adults

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 192 (estimated)
• Sponsor: Southern Methodist University · Academic / Other
• Sex: All
• Age: 18 Years – 64 Years
• Healthy volunteers: Accepted

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.

Conditions

• Physical Inactivity

Interventions

Type	Name	Description
BEHAVIORAL	Episodic future thinking	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.
BEHAVIORAL	Positive affect imagery	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.
BEHAVIORAL	Action planning	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.
BEHAVIORAL	High dose	Participants will listen to the audio-recording with the guided thinking tasks 5 times/week.
BEHAVIORAL	Recent thinking	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.
BEHAVIORAL	Neutral imagery	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).
BEHAVIORAL	Low dose	Participants will listen to the audio-recording with the guided thinking tasks 1 time/week.

Timeline

• Start date: 2022-02-14
• Primary completion: 2023-07-01
• Completion: 2023-07-01
• First posted: 2022-02-11
• Last updated: 2022-02-28

Locations

1 site across 1 country: United States