Smart Walk: A Culturally Tailored Smartphone-Delivered Physical Activity Intervention for African American Women

Inclusion Criteria:

* Self-reported African American/Black female
* Aged of 24-65 years
* Insufficiently Active (\< 60 minutes of moderate-to-vigorous physical activity per week as measured by Exercise Vital Sign Questionnaire)
* BMI \> 25 kg/m2
* English speaking and reading
* Ownership of a smartphone with the ability to download applications (i.e., apps)
* Ownership of a smartphone with the ability to receive text messages
* Willingness to receive a physical activity intervention delivered through their smartphone
* Willingness to include their first name or create an alias to be used on their profile page on the Smart Walk app

Exclusion Criteria:

* Plans to relocate out of Phoenix area in next 12 months
* Endorsing an item on the Physical Activity Readiness Questionnaire (PAR-Q), unless a doctor's note for study participation in provided
* Resting systolic blood pressure greater than 180 mmHG and/or a diastolic blood pressure greater than 120 mmHG , as assessed at baseline or at any other study assessment
* Self-reported participation in another diet or weight loss study at screening
* Pregnant or planning to become pregnant in the next 12 months