Exercise Habit & MPAC

Public Health Clinical Trial

Official title:

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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04651751
• Other study ID #: AT956
• Status: Completed
• Phase: N/A
• Start date: January 2015
• Est. completion date: June 2015

Study information

• Verified date: November 2020
• Source: University of Victoria
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical 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 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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 85
• Est. completion date: June 2015
• Est. primary completion date: June 2015
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 65 Years

Eligibility

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)

Related Conditions & MeSH terms

• Public Health

Intervention

Behavioral:
• Facilitating an Exercise Habit and Identity via the Multi-Process Action Control Model- A Randomized-Controlled Trial
Participants attended a workshop which consisted of a presentation and an exercise planning exercise.

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
University of Victoria

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Environmental Cues (self report, survey question)	The following item was used to assess if participants implemented the use of cues: "I use cues at home to remind me to exercise (e.g. placing a water bottle on my desk or gym clothes on the bed). The item was rated on a five point Likert scale which ranged from "1=strongly disagree" to "5= strongly agree".	Baseline, week four, week eight
Other	Temporal Consistency (self report, survey question)	The item was worded "How consistently do you exercise at the same time each day? (e.g., exercising every morning at 7 am, or exercising daily after supper)". The question was asked on a five point Likert scale which range from "1=not consistent at all" to "5=very consistent".	Baseline, week four, week eight
Primary	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.	Baseline to 8 weeks
Secondary	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''.	Baseline, week four, week eight