title: Frontiers Commentary: The HEART Mobile Phone Trial: The Partial Mediating Effects of Self-Efficacy on Physical Activity among Cardiac Patients.
authors.affiliation: Department of Psychology, Colorado School of Public Health, Colorado State University , Fort Collins, CO , USA.
authors.forename: Dan J
authors.initials: DJ
authors.lastname: Graham
keywords: mHealth; mobile phone; physical activity; self-efficacy; smartphone