Ethical Considerations
BROWN
All the study protocols received approval from the institutional review boards of the Brown University and University of Connecticut via an institutional review board authorization agreement (1612001664). All study participants provided written informed consent after review of study consent forms with program staff. Participants received up to US $215 as participant incentives for study participation and gym membership worth US $60 (or financial equivalent). Participants provided identifiable data which were stored on secure Brown University network servers. Only authorized personnel had access to participants identifiable data.