This is a behavioral study that will examine changes in physical activity and vascular health in response to a digital tool (app) that will appear on participant's lock screen of their Android phone. Participants will be asked to use this app for 3 months and to wear a Fitbit device continuously throughout the study. Participants will be asked to complete questionnaires, participate in fitness testing and measures of cardiovascular health at 3 months and 6 months after baseline assessments. The hypothesis is that exposure to the app will lead to increased physical activity volume and improved microvessel function.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
PREVENTION
Masking
NONE
Enrollment
2
Evaluative conditioning (temporally distributed micro-doses presented upon activation of smartphone screen)
Endothelium-dependent vasodilation is tested with the localized delivery of the neurotransmitter
Endothelium-independent vasodilation is tested with the localized delivery of the nitric oxide donor
This nitric oxide inhibitor is continuously given during the localized delivery of the endothelium-dependent agonist acetycholine.
The Pennsylvania State University
University Park, Pennsylvania, United States
Installation of the Heartphone Application.
Change in the total physical activity volume from baseline to 3 months as measured by the Actigraph GT3XP-BTLE (total activity counts)
Time frame: 3 months
Installation of the Heartphone Application.
Change in the total physical activity volume from baseline to 3 and 6 month as measured by the Actigraph GT3XP-BTLE (total activity counts).
Time frame: 6 months
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