Cardiac Rehabilitation Mobile-Health Fall Risk Prevention Intervention

Inclusion Criteria: * All patients referred to and who undergo early outpatient CR irrespective of diagnosis will be eligible for the study. * All participants must have access to a smart mobile device. Exclusion Criteria: * Advanced dementia. * Wheelchair bound. * Vision loss. * Patients that underwent sternotomy within 12-weeks will be excluded from the upper body muscular strength/power assessment and associated upper body training. At the time of enrollment into CR, balance, upper body muscular fitness, and lower body muscular fitness will be assessed in each subject before they are randomized at a 1:1 allocation ratio into one of two parallel groups: * Standard early outpatient center-based supervised CR only (control; CR); or * Early outpatient center-based supervised CR plus individualized, home-based, m-Health delivered physical function training (experimental group; CR+PFt). Balance, upper body muscular fitness, and lower body muscular fitness and gait will be reassessed in each participant after 5-to-6 weeks of CR and again upon completion of the CR program. Patient reported measures of fall risk will be measured at baseline with the Stop Elderly Accidents, Deaths, and Injuries (STEADI) tool kit. Balance confidence, health-related quality of life, physical activity level, and functional capacity will be evaluated before and after CR and CR+PFt using the Activities-Specific Balance Confidence (ABC) Scale, the Dartmouth Primary Care Cooperative Information Project (COOP) charts, and the Duke Activity Status Index (DASI).