"I am a Physically Active Person!": A Randomized Controlled Trial Aimed to Increase Levels of Physical Activity Self-Definition and Physical Activity Among a Sample of Inactive Adults

This explanatory sequential mixed methods study investigated if an intervention can increase the physical activity identity and physical activity (PA) of inactive individuals. The intervention condition focused on increasing participant's physical activity self-definition (PASD) through educational sessions and group discussions on the five direct and indirect determinants of PASD (perceived enjoyment, perceived wanting, perceived commitment, perceived trying, perceived ability). The control condition was given general health behaviour education sessions. Researchers conducted interviews with some of the participants after the intervention was completed.

Study Overview

• Status: Completed
• Conditions: Physical Activity; Physical Activity Self-Definition
• Intervention / Treatment: Other: Physical Activity Self-Definition; Other: Control

• Study Type: Interventional
• Enrollment (Actual): 120
• Phase: Not Applicable

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Must be insufficiently active (<150 minutes of moderate-vigorous PA per week)
• Scored below the mean in PASD
• Medically safe to participate in PA
• Intention to engage in PA over the next 6 weeks

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Triple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: PASD Intervention; 6 week 30-45 minute psychoeducation sessions that delivered content on the variables within the Physical Activity Self-Definition Model. The first session was an introductory session and each one that followed focused on one of the direct or indirect determinants of the model: perceived enjoyment, perceived wanting, perceived commitment, perceived trying, perceived ability (all relating to physical activity). Group activities such as worksheets and discussion were carried out during the session.	Other: Physical Activity Self-Definition; 6 week behavioural change program designed to increase PASD and PA
Active Comparator: Attention Control; 6 week 30-45 minute educational sessions that delivered content on general health behaviour. After the introductory session, each week, one of five general health behaviours were covered: balanced diet, sleep, reducing sedentary behaviour, mental/spiritual health and self-compassion/cultivating positive health behaviours. Group activities such as worksheets and discussion were carried out during the session.	Other: Control; 6 week program designed to as an attention control, delivering content on general health behaviour.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
ActiGraph Accelerometers	Weekly sedentary, light, moderate, and vigorous physical activity minutes were measured using accelerometers, worn at the hip for 7 day during waking hours.	Measured pre-intervention, 5 weeks later at intervention end and 4 weeks post intervention
Physical Activity Self-Definition	Measured with a 4-item questionnaire using a 7-point Likert scale (1= strongly disagree; 7 = strongly agree)	Measured pre-intervention, 5 weeks later at intervention end and 4 weeks post intervention

Collaborators and Investigators

• Sponsor: University of Manitoba
• Collaborators: Research Manitoba

Study record dates

Study Major Dates

• Study Start (Actual): September 1, 2015
• Primary Completion (Actual): April 1, 2017
• Study Completion (Actual): April 1, 2017

Study Registration Dates

• First Submitted: June 28, 2024
• First Submitted That Met QC Criteria: July 17, 2024
• First Posted (Actual): July 19, 2024

Study Record Updates

• Last Update Posted (Actual): July 22, 2024
• Last Update Submitted That Met QC Criteria: July 18, 2024
• Last Verified: June 1, 2024

More Information

Terms related to this study

• Other Study ID Numbers: E2013:120

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: We do not have ethics approval to share data

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No