"The purpose of this research was to evaluate the efficacy and acceptability of integrating holistic human performance (HHP) training into Basic Law Enforcement Training (BLET). Historical data from 37 police officer trainees (28 males, 9 females; M = 25.78 years) who completed BLET at a police department training academy in the southeastern United States were analyzed to determine the acceptability and efficacy of HHP training. Efficacy of HHP training was measured by comparing Connor Davidson Resilience Scale (CD-RISC) scores, resting Heart Rate Variability, and BLET performance scores of those trainees who received HHP training to those who did not. One-way between-groups Analysis of Variance (ANOVA) supported efficacy for trainee performance during the Practical Skills Unity of BLET instruction; there was a statistically significant difference in performance between trainees that received HHP training and those that did not. Additionally, acceptability of HHP training was supported based on trainee responses to 5-point Likert-scale and open-ended items on end-of-program evaluation surveys completed by the BLET trainees who received HHP training. Trainees reported that they enjoyed HHP training, it increased their knowledge, helped them feel more prepared for beginning a career in law enforcement, and they would recommend including it in future BLET classes. Overall, findings support the feasibility of integrating HHP training into BLET. Future research should build upon these findings to improve HHP training in BLET."--Abstract from author supplied metadata.