Testing Adaptive Interventions to Improve Physical Activity for Sedentary Women

Summary

This study employs a Sequential Multiple Assignment Randomized Trial (SMART) and aims to determine the most effective adaptive intervention combining four efficacious treatments (enhanced physical activity monitor, motivational text messages, motivational personal calls, group meetings) to increase physical activity and improve cardiovascular health among sedentary employed women.

Conditions

• Physical Activity

Interventions

BEHAVIORAL

Step 1: PA Monitor

The participant will receive an enhanced physical activity monitor treatment for weeks 1-8, which includes goal setting with a physical activity prescription, and self-monitoring with a physical activity monitor.

BEHAVIORAL

Step 1: PA Monitor + Text

The participant will receive an enhanced physical activity monitor treatment for weeks 1-8, which includes goal setting with a physical activity prescription, and self-monitoring with a physical activity monitor. In addition, these participants will receive motivational text messages. For participants who remain less than halfway to their daily step goal by a designated daily time, a motivational text message with a strategy to overcome barriers will be sent.

BEHAVIORAL

Step 2: PA Monitor with Calls

Nonresponders to the enhanced physical activity monitor, will receive an augmented treatment. The participant will continue to receive an enhanced physical activity monitor treatment for weeks 9-34. In addition they will receive ten brief motivational telephone calls, made by an interventionist, every two to three weeks during weeks 9-34.

BEHAVIORAL

Step 2: PA Monitor with Meetings

Nonresponders to the enhanced physical activity monitor, will receive an augmented treatment. The participant will continue to receive an enhanced physical activity monitor treatment for weeks 9-34. In addition, the participant will take part in five 45-minute group meetings held every four to six weeks during Weeks 9-34.

BEHAVIORAL

Step 2: PA Monitor + Texts with Calls

Nonresponders to the enhanced physical activity monitor plus text messaging, will receive an augmented treatment. The participant will continue to receive an enhanced physical activity monitor treatment for weeks 9-34. In addition, these participants will continue to receive motivational text messages. For participants who remain less than halfway to their daily step goal by a designated daily time, a motivational text message with a strategy to overcome barriers will be sent. In addition they will receive ten brief motivational telephone calls, made by an interventionist, every two to three weeks during weeks 9-34.

BEHAVIORAL

Step 2: PA Monitor + Texts with Meetings

Nonresponders to the enhanced physical activity monitor plus text messaging, will receive an augmented treatment. The participant will continue to receive an enhanced physical activity monitor treatment for weeks 9-34. In addition, these participants will continue to receive motivational text messages. For participants who remain less than halfway to their daily step goal by a designated daily time, a motivational text message with a strategy to overcome barriers will be sent. In addition, the participant will take part in five 45-minute group meetings held every four to six weeks during Weeks 9-34.

BEHAVIORAL

Step 3: PA Monitor

During Weeks 35-50, all women will receive enhanced physical activity monitors only.

Sponsors & Collaborators

• University of Illinois at Chicago

  collaborator OTHER

• Michigan State University

  collaborator OTHER

• National Institute of Nursing Research (NINR)

  collaborator NIH

• Rush University Medical Center

  lead OTHER

Principal Investigators

• Susan Buchholz, PhD · Michigan State University, College of Nursing

Study Design

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

SINGLE

Model

SEQUENTIAL

Eligibility

Min Age

18 Years

Max Age

70 Years

Sex

FEMALE

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2018-08-24

Primary Completion

2023-08-28

Completion

2025-06-30

Countries

• United States

Study Locations