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Physical ActivityNCT05582369

Feel the Move: A Micro-Randomized Trial of a Text-Based Expectation-Setting Intervention to Increase Physical Activity

A study testing Affective Rewards Messages in people with Physical Activity, run by University of Michigan at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The aim of this research is to evaluate the impacts of an intervention that reminds people of the affective rewards of exercise on physical activity in adults of any activity level Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Physical Activity
What is being tested?
Affective Rewards Messages
Could I receive a placebo?
No, everyone receives an active treatment
How many people
200 participants
Where
1 siteUnited States
Study dates
31 May 2023to 30 Nov 2023
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • lives in the US
  • 18 years old or older
  • desires to increase activity through structured exercise
  • has an iPhone that can send/receive text messages and an Apple Watch

Who cannot join

  • medically advised not to exercise

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Michigan

    Ann Arbor, Michigan, 48104

Other trials in United States

About this study

Official title: Setting Expectations for Enjoyment of Physical Activity

The aim of this research is to evaluate the impacts of an intervention that reminds people of the affective rewards of exercise on physical activity in adults of any activity level

Read the detailed description

The Feel the Move study tests the effects of a lightweight text-message based intervention to increase physical activity and affective attitudes towards exercise. The intervention being investigated is text messages that prime expected affective rewards of exercise, sent in advance of a time window during which participants made plans to exercise. At the start of the study, participants will write sentences about feeling good after exercise (which will be used as part of the intervention) and complete baseline questionnaires about their feelings towards exercise. For the next nine weeks, participants will be asked to plan two exercise sessions a week, and will be given a questionnaire after the time window of their planned exercise sessions to assess how it went. At the onset of each time window for their planned exercise session, participants will be micro-randomized to receive one of the following intervention options: no-message; a text message reminding them to fill out the study questionnaires; or a message about the affective rewards of exercise. The messages about affective rewards will be a mix of sentences participants wrote themselves during the baseline assessment and reflective prompts from the research team. At the nine-week mark, participants will again complete the same questionnaires about their feelings towards exercise that they initially completed at baseline. Throughout the study, participants will share data about their activity, including steps and calories burned, with the research team. These data will be automatically collected by the HIPAA-compliant CareEvolution platform from participants' Apple Watches. After the nine weeks of the study participation, a random sample of study participants will be asked to participate in exit interviews to share more details about their experiences with the intervention.

The primary hypothesis is that participants will burn more calories during their planned exercise periods when they receive messages about the affective rewards of exercise vs. when they do not. Researchers will also conduct secondary analyses examining the effects of the intervention on feelings towards exercise and qualitative data from the interviews.

Being tested
Affective Rewards Messages
Medical subject headings
Motor Activity

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Affective Rewards MessagesBehavioural

    Messages about the affective rewards of exercise

Study groups in NCT05582369
Study groupRoleWhat they receive
Affective Rewards MessagesExperimentalThroughout the study, each week participants will be asked to plan two exercise sessions for the upcoming week, and will be asked to report on how they did with those plans at the end of the day when they planned to exercise. At the very beginning of the time window when they planned to exercise participants will be randomized with 40% probability to receive no message, 20% probability to receive a reminder to fill out the study questionnaire at the end of the day, and 40% probability to receive one of two types of affective rewards messages (active intervention). The two types are: 1) low-reflection messages written by participants at the beginning of the study, about the affective rewards of exercise they have previously experienced; and 2) high-reflection messages that prompt participants to reflect on the affective rewards of exercise and text back a response.
Receives: Behavioral: Affective Rewards Messages

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Calories burned in planned exercise session

    Calories burned during the four-hour time window when participants planned to exercise

    Measured: 4 hours

Secondary outcomes (2)
  1. Change from Baseline Expected Post-exercise affect at 9 weeks

    Participants will be asked question about their expected post-exercise affect at the beginning and end of the 9 week study

    Measured: At study completion, 9 weeks after enrollment

  2. Change from Baseline in other affective attitude measures at 9 weeks

    Participants will be asked additional questions about their affective attitudes towards and valuations of exercise at the beginning and end of the 9 week study

    Measured: At study completion, 9 weeks after enrollment

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted17 Oct 2022
  2. Study start31 May 2023
  3. Primary completion1 Nov 2023
  4. Study completion30 Nov 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Model description
At each decision point-operationalized as the beginning of the time window during which a participant planned to exercise-each participant will be randomized to receive one of three intervention options: active intervention (text messages aimed to prime expectations of emotional rewards of exercise), a control message (a reminder that they will receive a study questionnaire later in the day), or no intervention.
Masking
None (open label)
Enrolment
200 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05582369
Sponsor's protocol ID
HUM00190301
Status last verified
Jun 2024
First submitted
21 Sep 2022
Last updated
25 Jun 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Mishra SR, Dempsey W, Klasnja P. A Text Messaging Intervention for Priming the Affective Rewards of Exercise in Adults: Protocol for a Microrandomized Trial. JMIR Res Protoc. 2023 Sep 1;12:e46560. doi: 10.2196/46560.

    PubMed 37656493

Questions about this trial

What is this clinical trial studying?

A study testing Affective Rewards Messages in people with Physical Activity, run by University of Michigan at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 25 Jun 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Calories burned in planned exercise session (time frame: 4 hours). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05582369, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Jun 2024.

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