Behavior, Goals, Physical Activity
Conditions
Keywords
Reinforcement, Walking, Exercise, Built Environment, Adaptive, Financial incentive, Walkability
Brief summary
The purpose of this study is to develop adaptive (AI) and micro-incentive (MI) interventions and test them against static (SI) and delayed-incentive (DI) interventions in a 4-arm randomized factorial trial to increase MVPA adoption and maintenance among inactive adults. Using neighborhood walkability and socioeconomic status, participants will be recruited from four neighborhood types: high walkable/high SES, high walkable/low SES, low walkable/high SES, and low walkable/low SES. We will evaluate synergistic or antagonistic effects of interventions and neighborhood factors on MVPA adoption by 12 months and maintenance by 24 months.
Interventions
BEHAVIORALAdaptive Goals
Prescribed goals change daily based on participant's performance
BEHAVIORALStatic Goals
Prescribed goals remain the same throughout study
BEHAVIORALDelayed (non-contingent) Incentives
Incentives are provided on bi-monthly basis for participation
BEHAVIORALImmediate Micro-Incentives
Incentives are provided immediately for each goal attained
Sponsors
National Cancer Institute (NCI)
Arizona State University
Study design
Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes
Inclusion criteria
* women and men of all races/ethnicities living in Maricopa County, Arizona
Exclusion criteria
* Live in one of the eligible neighborhood quadrants in Maricopa County, Arizona * Adult men and women between 18 and 60 years old * Inactive as screened by the International Physical Activity Questionnaire (IPAQ) short form and confirmed by baseline accelerometer measures * No history of heart failure or type 2 diabetes * No contraindications to exercise testing or requirement for medically supervised exercise (assessed by Physical Activity Readiness Questionnaire+ (PAR-Q+). * Not currently pregnant and not planning to becoming pregnant in the next 2 years * Not currently participating in physical activity, diet, or weight loss programs * Daily access to a mobile phone with text messaging capabilities or an iOS or Android smartphone * Willing to wear a small accelerometer on the wrist daily for 1 year * Willing to send and receive 2-3 text messages per day for 1 year * Not planning to be outside of Maricopa County for \> 30 days consecutively in the next 2 years * Not planning to move from their current home in the next 2 years
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Change in mean ActiGraph accelerometer-derived moderate-to-vigorous physical activity min/day (MVPA min/day) between study arms. | 12 months |
| Change in mean ActiGraph accelerometer-derived moderate-to-vigorous physical activity min/day (MVPA min/day) across high walkable (vs. low walkable) neighborhoods by 12 months. | 12 months |
| Change in mean ActiGraph accelerometer-derived moderate-to-vigorous physical activity min/day (MVPA min/day) across high walkable (vs. low walkable) neighborhoods by 24 months | 24 months |
Secondary
| Measure | Time frame |
|---|---|
| Change in mean fitness (VO2max measured by treadmill test) between study arms. | 12 months |
| Change in self-reported physical activity measured by the International Physical Activity Questionnaire (IPAQ). | 12 months |
Countries
United States
Outcome results
None listed