Exercise Instruction Via Phone or Print

NCT ID: NCT00200278

Last Updated: 2005-09-20

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE2
• Total Enrollment: 228 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2000-08-31
• Study Completion Date: 2005-03-31

Brief Summary

The objective of this study is to determine the differential effect of intervention delivery channel (phone versus print versus wait list control) on physical activity adoption and maintenance in previously sedentary adults. Both delivery channels have been found to be effective, but telephone-based interventions require more commitment on the part of the subjects and are more labor intensive than print-based interventions. Thus, we will conduct a randomized controlled clinical trial comparing three groups: 1) telephone-based motivationally-tailored individualized feedback; 2) print-based, motivationally-tailored individualized feedback; 3) minimal contact waiting list control condition (receive intervention after 12 months as controls). Two hundred and twenty-eight healthy, sedentary women and men ages 18-65 will be randomly assigned to one of the two interventions or the waiting-list control condition. Our primary hypothesis is that individuals randomized to either phone or print conditions will exhibit significantly higher levels of physical activity participation at 6 and 12 months than individuals in the waiting list control condition. And, in addition, that subjects randomized to the telephone condition will exhibit significantly higher levels of physical activity participation at 6 and 12 months than those in the print condition.

Detailed Description

As many as 60% of Americans do not engage in regular physical activity and 25% are completely inactive. The risk of cardiovascular disease is almost doubled among people who are physically inactive, comparable to the risks associated with increased systolic blood pressure, cigarette smoking, and elevated serum cholesterol. To make an impact on physical activity prevalence at the population level requires a research focus at the interface between clinical efficacy trials and large-scale dissemination studies. Studies at this interface must use proven interventions that are simultaneously effective and cost-efficient. Such interventions are the focus of this proposal.

The objective of this study is to determine the differential effect of intervention delivery channel (phone versus print versus wait list control) on physical activity adoption and maintenance in previously sedentary adults. Both delivery channels have been found to be effective, but telephone-based interventions require more commitment on the part of the subjects and are more labor intensive than print-based interventions. Thus, we will conduct a randomized controlled clinical trial comparing three groups: 1) telephone-based motivationally-tailored individualized feedback; 2) print-based, motivationally-tailored individualized feedback; 3) minimal contact waiting list control condition (receive intervention after 12 months as controls). Two hundred and twenty-eight healthy, sedentary women and men ages 18-65 will be randomly assigned to one of the two interventions or the waiting-list control condition. The two intervention arms will be matched with respect to frequency and content of contact. Data will be collected at baseline, 6, and 12 months using well-established physical activity and physical performance measures, as well as a comprehensive set of psychosocial questionnaires. Our primary hypothesis is that individuals randomized to either phone or print conditions will exhibit significantly higher levels of physical activity participation at 6 and 12 months than individuals in the waiting list control condition. And, in addition, that subjects randomized to the telephone condition will exhibit significantly higher levels of physical activity participation at 6 and 12 months than those in the print condition. Additional questions of interest include evaluation of the cost-effectiveness of the two intervention delivery approaches, each in relation to each other and to the wait list control group and examination of potential moderators and mediators of the intervention-physical activity relationship. This study will contribute important information regarding the relative efficacy and cost-effectiveness of two interventions, each of which can be utilized for widespread public health dissemination.

Conditions

Cardiovascular Disease

Keywords

Exercise; Intervention studies; Decision-making; computer assisted Expert systems; telephone

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Interventions

PROJECT STRIDE

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

Individuals between the ages of 18 to 65 years were recruited for this study. Criteria for study participation were that individuals were healthy and under-active (i.e., participating in moderate or vigorous physical activity for 90 minutes or less per week).

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Brown University

OTHER

Sponsor Role: collaborator

Stanford University

OTHER

Sponsor Role: collaborator

University of Pittsburgh

OTHER

Sponsor Role: collaborator

The Miriam Hospital

OTHER

Sponsor Role: lead

Principal Investigators

Bess H Marcus, PhD

Role: PRINCIPAL_INVESTIGATOR

The Miriam Hospital

Locations

Centers for Behavioral and Preventive Medicine/Miriam Hospital

Providence, Rhode Island, United States

Countries

United States

Other Identifiers

R01HL064342

Identifier Type: NIH

Identifier Source: org_study_id

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