Public Health
Conditions
Brief 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.
Interventions
BEHAVIORALFacilitating 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.
Sponsors
University of Victoria
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes
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)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| GT3X+ Actigraph Activity Monitors (for measuring physical activity) | Baseline to 8 weeks | Participants wear accelerometers for one week at baseline and at week eight to record their physical activity. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| 1.Self-Report Behavioural Automaticity Index (self report, survey question | Baseline, week four, week eight | 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''. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Environmental Cues (self report, survey question) | Baseline, week four, week eight | 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. |
| Temporal Consistency (self report, survey question) | Baseline, week four, week eight | 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. |
Outcome results
None listed