The VA-STRIDE Study

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

232 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-06-30

Study Completion Date

2013-05-31

Brief Summary

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The purpose of the study was to examine the effectiveness of an expert-system, print-based physical activity (PA) intervention delivered to Veterans receiving primary care at the VA Pittsburgh Healthcare System (VAPHS).

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Detailed Description

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A.1 The primary aim of the study was to determine the effect of a physical activity intervention designed to increase physical activity for sedentary Veterans at VAPHS.

A.2. Secondary aims were to assess key health-related outcomes related to the intervention including health and quality of life. The specific outcomes were to (a) estimate the impact of the intervention on physical function, health-related quality of life (HRQL), weight, blood pressure, and serum lipids; and (b) characterize variation in intervention effectiveness by participant sociodemographic and health characteristics, such as age, race, and baseline health status.

232 Veterans were randomized to either the physical activity intervention group or the attention control group. Participants randomized to the physical activity intervention group participated in an individualized physical activity counseling session at baseline, conducted by an exercise physiologist, with guided goal setting to increase physical activity gradually to at least 150 minutes/week of moderate intensity. An additional 14 intervention counseling contacts, generated by participants' responses to physical activity questionnaires and individually tailored computer-generated expert system feedback messages based on stages of the motivational readiness for change model, were conducted via postal mail over the subsequent 12 months in parallel with routine primary care. Newsletters providing additional support and suggestions for increasing physical activity were also part of the mailed counseling contacts. Participants randomized to the attention control group participated in a generalized healthy lifestyle counseling session at baseline, conducted by a health educator, which included limited advice to become more physically active. Fourteen follow-up wellness newsletters that focused on healthy lifestyle issues other than physical activity were sent to participants via postal mail over the subsequent 12 months with the same frequency of contact as for the physical activity intervention group and in parallel with routine primary care. Assessment of effectiveness occurred at baseline, 6, and 12 months.

Conditions

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Overweight Obesity Sedentary Lifestyle

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Physical Activity Intervention

Expert system-based physical activity counseling: Individualized baseline counseling and guided goal setting to increase physical activity gradually to at least 150 minutes/week of moderate intensity, with a 12-month follow-up via postal mail of 14 additional counseling contacts generated by responses to a physical activity questionnaire and individually tailored computer-generated expert system feedback messages for physical activity based on stages of the motivational readiness for change model

Group Type EXPERIMENTAL

Expert system-based physical activity counseling

Intervention Type BEHAVIORAL

The intervention included 14 mailings to participants that involved completion of physical activity questionnaires printed on forms that were scanned into a computerized expert system program to generate individually-tailored feedback messages and related manuals based on the Stages of Motivational Readiness for Change Model. Newsletters providing additional support and suggestions for increasing physical activity were also part of the mailing program.

Attention Control

Generalized baseline healthy lifestyle education and suggestion to increase physical activity, with a 12-month follow-up via postal mail of 14 wellness newsletters focused on health issues other than physical activity

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Expert system-based physical activity counseling

The intervention included 14 mailings to participants that involved completion of physical activity questionnaires printed on forms that were scanned into a computerized expert system program to generate individually-tailored feedback messages and related manuals based on the Stages of Motivational Readiness for Change Model. Newsletters providing additional support and suggestions for increasing physical activity were also part of the mailing program.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* at least 18 years of age at the time of enrollment,
* one or more primary care clinic visits at VAPHS in the 12 months prior to enrollment
* overweight or obese, with a BMI \> =25.0 kg/m\^2 at the most recent primary care visit prior to enrollment.

Exclusion Criteria

* primary care provider judgment that unsupervised moderate-intensity exercise will place the Veteran at risk of a cardiovascular event, or other safety concern for guided but unsupervised physical activity
* Veteran is nonambulatory or requires assistive devices to ambulate (e.g., wheelchairs, prosthetic legs, canes or walkers),
* Veteran regularly participates in moderate to brisk physical activity 60 minutes or more each week
* current diagnosis of pulmonary hypertension, chronic obstructive pulmonary disease (COPD), and other comorbid conditions deemed to be contraindications for guided, unsupervised physical activity
* self-reported blindness and/or unable to read printed material in English (e.g., a newspaper)
* plans to move from the VAPHS treatment area in the next 12 months
* unable or unwilling to travel to the study site 4 times during the 12-month study period
* VAPHS employee
* current participant in another interventional research study that may confound outcomes
* unable or unwilling to provide signed, informed consent

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes