Physical Activity Clinical Trial
Official title:
An Adaptive Physical Activity Intervention for Overweight Adults: A Randomized Controlled Trial
Verified date | January 2014 |
Source | Arizona State University |
Contact | n/a |
Is FDA regulated | No |
Health authority | United States: Institutional Review Board |
Study type | Interventional |
The purpose of this study is to develop and evaluate an adaptive shaping intervention based
on Behavioral Economics and Operant principles to promote physical activity behaviors
(adaptive group) and compare to a static physical activity intervention (static group) using
a two-group randomized controlled trial design. Participants will include 20 overweight men
and women (BMI 25-35 kg/m2) between 18 to 55 years. Both groups will receive the following
components: 1) a pedometer, 2) self-monitoring of physical activity, 3) brief educational
materials, 4) motivational prompts, 5) physical activity goals, and 6) small financial
incentives. The Adaptive Intervention (AI) group will receive adaptive goals and feedback
based on percentiles and a "moving" window of their recent physical activity, with
incentives linked to goal attainment. Comparison intervention participants will receive the
static 10,000 steps per day goal, with matching incentive amounts but without incentives
linked to goal attainment. The study will compare differences in goal setting and shaping
procedures that aim to increase physical activity behavior.
Primary aims include:
1. To determine whether physical activity (pedometer-measured steps/day) in both the
Adaptive and Static interventions increased compared to their respective baselines.
Hypothesis: Both the adaptive and static interventions will result in increased
physical activity over 6 months.
2. To evaluate whether the Adaptive Intervention results in greater change in physical
activity (pedometer-measured steps/day) compared to the Static Intervention.
Hypothesis: The adaptive intervention will result in significantly greater physical
activity, measured by pedometer, compared to the static intervention over 6 months.
3. To assess participants' satisfaction with the overall program. Hypothesis: Adaptive
Intervention participants will report greater overall satisfaction with the
intervention than the Static Intervention participants.
Status | Completed |
Enrollment | 20 |
Est. completion date | September 2011 |
Est. primary completion date | September 2011 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Both |
Age group | 18 Years to 55 Years |
Eligibility |
Inclusion Criteria: 1. Live in San Diego County. 2. Be between 18 and 55 years old. 3. Currently not exceeding 1,000 MET-minutes per week of physical activity determined by the International Physical Activity Questionnaire (IPAQ short form). 4. Not suffering from a medical condition or taking medication(s) that would prohibit one from adopting a moderate intensity physical activity program. 5. Have a body mass index between 25 and 35 kg/m2. 6. Not currently pregnant. 7. Familiar with email and access to email and the internet daily, 8. Not planning to leave San Diego County for more than 10 days over the next 6 months. 9. Not planning to move away from San Diego County in the next 6 months. 10. Potential participants must have access to Microsoft Windows (XP, Vista, or windows 7) on a daily basis. If they do not, they would need to have daily access to and use Windows virtualization software (e.g. Parallels, VMware) for an Apple operating system. Exclusion Criteria: 1. Does not live in Dan Diego. 2. Individuals under the age of 18 or over 55. 3. Those who exceed 1,000 met-minutes of physical activity per week determined by the International Physical Activity Questionnaire (IPAQ short form). 4. Suffering from a medical condition or taking medication which will prohibit one from adopting a moderate intensity physical activity program. 5. Does not have a BMI between 25 and 35 kg/m2. 6. Currently Pregnant. 7. Unfamiliar with email, or does not have access to the internet and email daily. 8. Planning to leave San Diego for more than ten days. 9. Planning to move from San Diego in the next 6 months. 10. Does not have access to Microsoft Windows or a Windows virtualization software for an Apple operating system. |
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Prevention
Country | Name | City | State |
---|---|---|---|
United States | San Diego State University | San Diego | California |
Lead Sponsor | Collaborator |
---|---|
Arizona State University | Active Living Research |
United States,
Adams MA, Sallis JF, Norman GJ, Hovell MF, Hekler EB, Perata E. An adaptive physical activity intervention for overweight adults: a randomized controlled trial. PLoS One. 2013 Dec 9;8(12):e82901. doi: 10.1371/journal.pone.0082901. eCollection 2013. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Physical activity measured daily over 6 months by Omron pedometers (HJ-720ITC) . | Participants in both groups will be provided an Omron (HJ-720ITC) pedometer on the first day of the baseline phase, and will continue to use the pedometer throughout the entire study. | 6 months | No |
Secondary | Satisfaction Survey | At the end of the intervention phase, participants completed a satisfaction interview to rate on Likert-type scales and open-ended questions how motivating or burdensome specific study components were to them, their overall satisfaction with the study, personal experience with the intervention, any side effects or injuries, and their recommendations for improvement. | 6 months | No |
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