Exercise Habit & MPAC

University of Victoria

Status: Completed

Conditions: Public Health

Treatments: Behavioral: Facilitating an Exercise Habit and Identity via the Multi-Process Action Control Model- A Randomized-Controlled Trial

Study type: Interventional

Funder types: Other

Identifiers

NCT04651751

AT956

Details and patient eligibility

About

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.

Enrollment: 85 patients

Sex: All

Ages: 18 to 65 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• adults 18-65
• new gym members
• exercising < 150 minutes/week at a moderate to vigorous level

Exclusion criteria

• 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)

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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85 participants in 2 patient groups

Control

No Intervention group

Description:

No Intervention: Control Participants exercised on their own without receiving any instructions.

Intervention

Experimental group

Description:

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.

Treatment:

Behavioral: Facilitating an Exercise Habit and Identity via the Multi-Process Action Control Model- A Randomized-Controlled Trial