Context: Studies examining the effectiveness of cardiopulmonary resuscitation (CPR) chest compressions have found compression depth and rate to be less than optimal and recoil to full release to be incomplete. Objective: To determine if visual feedback affects the rate and depth of chest compressions and chest recoil values during CPR training of athletic trainers and to determine retention of proficiency over time. Design: Pre-test, post-test. Setting: Medical simulation laboratory. Participants: Eleven females and one male (23.08+.51 years old), from an Athletic Training Graduate Program. All participants were Certified Athletic Trainers (1.12+.46 years of experience) and certified in CPR for the Professional Rescuer. Interventions: Participants completed a pre-test, practice sessions, and a post-test on a SimMan® (Laerdal Medical) manikin with visual feedback of skills in real time. After the pre-test, participants received feedback by the investigators. Participants completed practice sessions as needed (range=1-4 sessions), until they reached 100% skill proficiency. After achieving proficiency, participants returned 8 weeks later to perform the CPR skills. Main Outcome Measures: The average of all compression outcome measures (rate, depth, recoil) was captured every 10 seconds (6x per min). All participants performed 5 cycles of 30 compressions. A two-tailed paired samples t-test (pre to post) was used to compare rate of chest compressions, depth of chest compressions, and recoil of the chest. Significance was set a priori at pResults: There was a significant difference between pre and post-test compression depth average, p=.002. The pre-depth average was 41mm + 9.83mm compared to the post-depth average of 52.26mm + 5mm. There were no significant differences between pre and post-test chest compression rates and recoil. Conclusions: The use of a simulated manikin with visual feedback facilitated participants to reach the recommended compression depth.