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Web-based Physical Activity Program

The recruitment status of this study is unknown because the information has not been verified recently.
Verified June 2011 by Karnes, Sasha.
Recruitment status was  Recruiting
University of Wisconsin, Milwaukee
Information provided by:
Karnes, Sasha Identifier:
First received: October 4, 2010
Last updated: June 14, 2011
Last verified: June 2011

The specific aims of the proposed study are:

  • 1. To determine if web-based Motivational Interviewing (MI) is effective, compared to an informational web-based comparison group, in enhancing physical activity (PA) participation; and
  • 2. To assess the mechanisms by which web-based MI enhances PA through changes in targeted cognitive mediators.

The specific hypotheses of the study include that:

  • Hypothesis 1: Web-based MI will increase PA;
  • Hypothesis 2: Web-based MI will lead to stage progression in the direction of increased readiness to participate in PA;
  • Hypothesis 3: Web-based MI will influence theoretically identified cognitive variables;
  • Hypothesis 4: Cognitive variables will mediate increases in PA participation.

Condition Intervention Phase
Physical Activity
Behavioral: Web-based Motivational Interviewing
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Subject)
Primary Purpose: Prevention
Official Title: Investigation of Web-based Motivational Interviewing to Increase Physical Activity Participation Among Adults

Further study details as provided by Karnes, Sasha:

Primary Outcome Measures:
  • Physical Activity (pedometer recordings) [ Time Frame: 1 week post-intervention ] [ Designated as safety issue: No ]
    Physical activity will be assessed using pedometers.

  • Physical activity (self-report) [ Time Frame: 3-months post-intervention ] [ Designated as safety issue: No ]
    Physical activity will be assessed using a self-report inventory.

Secondary Outcome Measures:
  • Cognitive Mediators [ Time Frame: 3 months post intervention ] [ Designated as safety issue: No ]
    Cognitive mediators of physical activity participation including self-efficacy, readiness to change, motivation, intention, enjoyment, and decisional balance for physical activity will be assessed.

Estimated Enrollment: 132
Study Start Date: April 2011
Estimated Primary Completion Date: December 2011 (Final data collection date for primary outcome measure)
Intervention Details:
    Behavioral: Web-based Motivational Interviewing
    Participants will engage in 4 sessions of web-based motivational interviewing over the course of 4 weeks.
Detailed Description:

Increasing physical activity (PA) is a public health priority. There is preliminary support for application of Motivational Interviewing (MI) for physical activity (PA), web-applications for PA promotion, web-based MI for behavior change, and finally web-based MI for PA. Based on collective findings in these areas of inquiry, it is necessary to investigate the efficacy of MI as a method that lends readily to practical applications for PA promotion. The current study seeks to investigate whether web-based MI can be applied in an adult population to enhance PA participation using a physician referral scheme. Additionally, mechanisms of behavior change are considered in order to inform future research and intervention.


Ages Eligible for Study:   21 Years to 55 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Adults referred through primary care due to insufficient physical activity standards based on Centers for Disease Control (CDC) guidelines for aerobic activity.
  • Must have internet access and e-mail.
  • Cleared by physician for physical activity participation.

Exclusion Criteria:

  • Greater than 10,000 steps per day on average based on baseline pedometer screening over the course of 7 days.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01218412

Contact: Sasha L. Karnes, M.S.

United States, Wisconsin
Aurora RiverCenter Recruiting
Milwaukee, Wisconsin, United States, 53212
Contact: Tomas Kubrican, M.D.   
Principal Investigator: Sasha L. Karnes, M.S.         
Sponsors and Collaborators
Karnes, Sasha
University of Wisconsin, Milwaukee
Principal Investigator: Sasha L. Karnes, M.S. University of Wisconsin, Milwaukee
  More Information

No publications provided

Responsible Party: Sasha L. Karnes, M.S., University of Wisconsin, Milwaukee Identifier: NCT01218412     History of Changes
Other Study ID Numbers: 10-84E
Study First Received: October 4, 2010
Last Updated: June 14, 2011
Health Authority: United States: Institutional Review Board

Keywords provided by Karnes, Sasha:
Physical Activity
Motivational Interviewing
Physician Referral processed this record on November 19, 2014