Public HealthNCT04651751
Exercise Habit & MPAC
A study of Public Health, run by University of Victoria.
Trial summary
The limitations of applying social cognitive models to understand physical activity (PA) have led to the emergence of several new PA models within the past decade. The Multi-Process Action Control (M-PAC) is a comprehensive PA model that proposes intention is established from outcome expectations, perceived… Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Public Health
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 85 participants
- Where
- No sites listed yet
- Study dates
- Jan 2015to Jun 2015
- 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 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- adults 18-65
- new gym members
- exercising < 150 minutes/week at a moderate to vigorous level
Who cannot join
- not affiliated with a gym or recreation center
- exercising > 150 minutes/week at a moderate to vigorous level
- clinical health conditions (assessed by the PAR-Q)
About this study
Official title: Facilitating an Exercise Habit and Identity Via the Multi-Process Action Control Model- A Randomized-Controlled Trial
The limitations of applying social cognitive models to understand physical activity (PA) have led to the emergence of several new PA models within the past decade. The Multi-Process Action Control (M-PAC) is a comprehensive PA model that proposes intention is established from outcome expectations, perceived capability, and opportunity, then the success of translating this to behavior depends on affective judgments and behavioral-regulation. Over time, M-PAC proposes that behavior is can become maintained through the formation of identity and habit. The purpose of this study was to investigate the trajectory of change of these M-PAC constructs across time in a randomized controlled trial. Participants (n=85) were inactive new gym members and were randomized into a control (n=41) or intervention (n=44) group. The intervention group attended a workshop and received a booster phone call follow-up at week four. Measures for both groups included accelerometry and M-PAC at baseline and eight week follow-up.
- Conditions
- Public Health
- Being tested
- Facilitating an Exercise Habit and Identity via the Multi-Process Action Control Model- A Randomized-Controlled Trial
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Facilitating an Exercise Habit and Identity via the Multi-Process Action Control Model- A Randomized-Controlled TrialBehavioural
Participants attended a workshop which consisted of a presentation and an exercise planning exercise.
| Study group | Role | What they receive |
|---|---|---|
| Control | No intervention | No Intervention: Control Participants exercised on their own without receiving any instructions. |
| Intervention | Experimental | Those who were randomized into the intervention group attended a workshop where the PI delivered a presentation that focused on establishing a preparatory exercise habit by using the M-PAC approach and proposed habit model. Participants were then provided with instructions on completing their exercise plan sheet. Receives: Behavioral: Facilitating an Exercise Habit and Identity via the Multi-Process Action Control Model- A Randomized-Controlled Trial |
What is being measured
The primary outcome is the main question the study is designed to answer.
GT3X+ Actigraph Activity Monitors (for measuring physical activity)
Participants wear accelerometers for one week at baseline and at week eight to record their physical activity.
Measured: Baseline to 8 weeks
Secondary outcomes (1)
1.Self-Report Behavioural Automaticity Index (self report, survey question
The Self-Report Behavioral Automaticity Index (SRBAI) was used to assess preparatory habit. The SRBAI consists of 4 items on a 5-point Likert scale with 1 being strongly disagree to 5 being strongly agree. The question stem stated ''When I prepare to exercise…'' which was then followed by four items on the scale: ''I do it without having to consciously remember'', ''I do it automatically'', ''I do it without thinking'', and ''I start before I realize I am doing it''.
Measured: Baseline, week four, week eight
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Dec 2020
- Study startJan 2015
- Primary completionJun 2015
- Study completionJun 2015
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Public HealthStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 85 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Victoria
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ryan Rhodes, University of Victoria
- Investigators
- Ryan E Rhodes, PhD, Study chair, University of Victoria
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04651751
- Sponsor's protocol ID
- AT956
- Status last verified
- Nov 2020
- First submitted
- 17 Nov 2020
- Last updated
- 3 Dec 2020
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 3 Dec 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Facilitating an Exercise Habit and Identity Via the Multi-Process Action Control Model- A Randomized-Controlled Trial
- ClinicalTrials.gov ID
- NCT04651751
- Acronym / sponsor ID
- AT956
- Conditions
- Public Health
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 85 participants (actual)
- Lead sponsor
- University of VictoriaUniversity, hospital or other
- Study start
- Jan 2015
- Primary completion
- Jun 2015 (actual)
- Study completion
- Jun 2015 (actual)
- First posted
- 3 Dec 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The limitations of applying social cognitive models to understand physical activity (PA) have led to the emergence of several new PA models within the past decade. The Multi-Process Action Control (M-PAC) is a comprehensive PA model that proposes intention is established from outcome expectations, perceived capability, and opportunity, then the success of translating this to behavior depends on affective judgments and behavioral-regulation. Over time, M-PAC proposes that behavior is can become maintained through the formation of identity and habit. The purpose of this study was to investigate the trajectory of change of these M-PAC constructs across time in a randomized controlled trial. Participants (n=85) were inactive new gym members and were randomized into a control (n=41) or intervention (n=44) group. The intervention group attended a workshop and received a booster phone call follow-up at week four. Measures for both groups included accelerometry and M-PAC at baseline and eight week follow-up.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Control | No intervention | –No Intervention: Control Participants exercised on their own without receiving any instructions. |
| Intervention | Experimental | Behavioral: Facilitating an Exercise Habit and Identity via the Multi-Process Action Control Model- A Randomized-Controlled TrialThose who were randomized into the intervention group attended a workshop where the PI delivered a presentation that focused on establishing a preparatory exercise habit by using the M-PAC approach and proposed habit model. Participants were then provided with instructions on completing their exercise plan sheet. |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- adults 18-65
- new gym members
- exercising < 150 minutes/week at a moderate to vigorous level
Key exclusion criteria (3 listed)
- not affiliated with a gym or recreation center
- exercising > 150 minutes/week at a moderate to vigorous level
- clinical health conditions (assessed by the PAR-Q)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Facilitating an Exercise Habit and Identity via the Multi-Process Action Control Model- A Randomized-Controlled TrialParticipants attended a workshop which consisted of a presentation and an exercise planning exercise. | Behavioural | Intervention |
Primary outcome
GT3X+ Actigraph Activity Monitors (for measuring physical activity)
Time frame: Baseline to 8 weeks
Participants wear accelerometers for one week at baseline and at week eight to record their physical activity.
1 secondary outcome
1.Self-Report Behavioural Automaticity Index (self report, survey question
Time frame: Baseline, week four, week eight
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 Dec 2020.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Ryan E Rhodes, PhD study chair
University of Victoria
Questions about this trial
What is this clinical trial studying?
A study of Public Health, run by University of Victoria.
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 3 inclusion and 3 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 3 Dec 2020. Status can change between updates, so confirm with the study contact before making plans.
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?
GT3X+ Actigraph Activity Monitors (for measuring physical activity) (time frame: Baseline to 8 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 3 Dec 2020; AzTrials last refreshed its copy on 29 Oct 2026.