We Need You: Influence of Hiring Demand and Modified Applicant Testing on the Physical Fitness of Law Enforcement Recruits

Law enforcement recruit fitness: Changes across the fitness spectrum

BACKGROUND

Law enforcement is a profession of sedentary physical activity interspersed with physically demanding activity that requires high levels of fitness. It is imperative that agencies training law enforcement recruits maximise their fitness during their time at the academy.

OBJECTIVE

The aim of this study was to investigate changes in physical fitness during academy training.

METHODS

Retrospective data for 10 academy recruit classes, totalling 715 participants, were collected from a US law enforcement agency. The change in performance on two standardised tests were used as outcome measures. Comparisons were made between percentiles utilising one-way ANOVA and a linear mixed model (LMM).

RESULTS

Overall, higher percentiles were found to have smaller improvements in physical fitness than lower percentiles. The results of the LMM support this supposition, showing that lower physical fitness scores resulted in greater improvements in a generalised fitness assessment (value = -0.45, standard error 0.02, p < 0.001) and an occupational assessment (value = -0.49, standard error = 0.02, p < 0.001).

CONCLUSION

The results of this study suggest that recruits with lower physical fitness will see greater improvements during academy training. This could be due to a ceiling effect for the more fit but may also be due to recruits of higher physical fitness being under trained during academy. Utilising ability-based training and prescribing an appropriate workload to recruits of higher fitness may improve overall recruit fitness upon graduation.

Introduction of an applicant Job-Related Task Assessment (JTA) and the effects on the health and fitness of police recruits

BACKGROUND

In 2020, a police department in the south-eastern USA introduced a Job-Related Task Assessment (JTA). The JTA included running, climbing, crawling, balance, direction changes, stair climbing, dragging, pushing, and simulated controlling of a struggling subject and needed to be completed by applicants in 6 : 57 min:s. It is not known whether introducing the JTA in the hiring process affected the health and fitness of hired recruits.

OBJECTIVE

To compare the health and fitness of recruits hired prior to, and following, the JTA introduction.

METHODS

Analysis was conducted on recruit data split into academy training year: 2016 (n = 91), 2017 (n = 129), 2018 (n = 167), 2019 (n = 242), and 2020 (n = 37). The 2020 group was hired after the JTA introduction and included one academy class. The following were recorded for all recruits: age, height, body mass, and body mass index; systolic and diastolic blood pressure (BP); sit-and-reach; grip strength; push-ups; sit-ups; 2.4-km run; and a physical ability test (PAT). A univariate ANOVA, with sex and age as covariates and Bonferroni post hoc, determined between-year differences.

RESULTS

The recruits from 2020 were significantly lighter than 2018 recruits (p < 0.031), had higher systolic and diastolic BP than recruits from 2016-2018 (p≤0.006), completed the 2.4-km run faster than recruits from all years (p < 0.001), and completed the PAT faster than the 2016 and 2019 (p = 0.006-0.007) recruits.

CONCLUSION

The JTA introduction led to the selection of recruits with lower body mass, and better aerobic (2.4-km run) and job-specific fitness (PAT). However, 2020 recruits also had higher BP which should be monitored.

The Effects of Traditional versus Ability-Based Physical Training on the Health and Fitness of Custody Assistant Recruits

This study investigated traditional training (TT) versus ability-based training (ABT) in custody assistant recruits. Retrospective analysis was conducted on two recruit classes who completed an 8-week academy. The TT group (18 males, 13 females) followed a physical training model where recruits completed the same exercises with the same intensity; the ABT group (17 males, 12 females) had exercises tailored towards their ability. Pre- and post-academy, recruits were assessed in: body mass; body fat percentage (BF%); resting heart rate (RHR); blood pressure (BP); waist circumference (WC); waist-to-hip ratio (WHR); grip strength; push-ups; sit-ups; YMCA step test recovery HR; 201-m run; and 2.4-km run. Independent samples t-tests evaluated between-class pre-test differences, with significance set at p ≤ 0.05. Paired samples t-tests (p ≤ 0.05) detected within-group training changes. Change scores were calculated for each variable; independent samples t-tests (p ≤ 0.05) compared change scores between groups. The TT group had lower BF%, BP, and WC; and were superior in sit-ups and the 2.4-km run before training. After academy, the TT recruits improved WHR, grip strength, recovery HR, 201-m run, and 2.4-km run, but increased diastolic BP. The ABT recruits decreased BF%, RHR, and WC, and improved push-ups, sit-ups, recovery HR, 201-m run, and the 2.4-km run. ABT recruits had greater positive changes in BF%, RHR, diastolic BP, and sit-ups. TT and ABT recruits generally experienced favorable fitness changes; the degree of positive change tended to be greater for ABT recruits for select tests. Coupled with the diastolic BP increase for TT recruits, this may provide evidence for ABT.

Analysis of Total and Segmental Body Composition Relative to Fitness Performance Measures in Law Enforcement Recruits

Law enforcement agencies often test the fitness performance and body composition of incoming recruits. This study investigated the relationships between whole and segmental body composition, and fitness tests in law enforcement recruits. A retrospective analysis of 72 male and 11 female recruits was performed. Bioelectrical impedance analysis (BIA) variables were: lean mass (LM), upper-extremity lean mass (UELM), trunk LM, lower-extremity lean mass (LELM), fat mass (FM), upper-extremity fat mass (UEFM), trunk FM, and lower-extremity fat mass (LEFM). Fitness tests included: vertical jump (VJ), peak anaerobic power (PAPw), 75-yard pursuit run (75PR), push-ups, sit-ups, 2-kg medicine ball throw (MBT), and the multi-stage fitness test (MSFT). Partial correlations and ANCOVAs between quartiles assessed relationships between body composition and performance. Significant moderate-to-large relationships were found; LM, UELM, trunk LM, LELM all related to PAPw (r = 0.500-0.558) and MBT (r = 0.494-0.526). FM, UEFM, trunk FM, LEFM all related to VJ (r = -0.481 to -0.493), 75PR (r = 0.533-0.557), push-ups (r = -0.484 to -0.503), sit-ups (r = -0.435 to -0.449), and MSFT (r = -0.371 to -0.423). The highest LM quartile (4) had superior PAPw and MBT than LM quartiles 1-3. Higher FM quartiles performed poorer in VJ, push-ups, and sit-ups. The 75PR quartiles 2, 3, and 4 were slower than quartile 1, and MSFT quartile 4 completed less shuttles. Total and segmental measures of LM and FM shared the same relationships; lower FM and higher LM related to better performance. Monitoring body composition could help guide training to optimize performance.

The Health and Fitness Characteristics of Civilian Jailer Recruits Prior to Academy Training

Civilian jailer (CJ) recruits may not complete fitness testing within their hiring process. As certain job tasks in custody/jail facilities can be physically demanding (e.g., inmate restraint), better health and fitness should help a recruit graduate from a CJ academy and be prepared for the occupation. This study investigated the health and fitness characteristics of CJ recruits entering academy training, detailed between-sex differences, and categorized recruits relative to population norms. Retrospective analysis was conducted on data from 89 CJ recruits (48 males, 41 females) across three academy classes from one law enforcement agency. The following were measured before academy: resting heart rate (RHR); blood pressure (BP); height, body mass, and body mass index (BMI); waist circumference; sit-and-reach; grip strength; 60-s pushups; and YMCA step test recovery heart rate (HR). Independent samples t-tests derived any between-sex differences. Recruit data were compared to categorical population norms. The results indicated that male recruits were taller, heavier, had greater grip strength, and completed more push-ups than female recruits (p < 0.001). Approximately 53% of recruits were overweight or obese according to BMI, ~63% had an RHR below average-to-very poor, and ~75% had elevated BP or hypertension. Most recruits had good-to-excellent flexibility (sit-and-reach; ~66%) and muscular endurance (push-ups; ~85%). However, ~70% of recruits had fair-to-poor grip strength, and ~79% had poor-to-very poor aerobic fitness measured by step test recovery HR. Aerobic conditioning and strength training should be a focus of CJ recruits during academy. Furthermore, better aerobic fitness should benefit job performance and lessen cardiovascular disease risk.

Moving Past the One-Size-Fits-All Education-Training Model of Police Academies to the Self-Prescribed Individualized Exercise Prescription Model

Law enforcement agencies generally employ the "one-size-fits-all" education-training model. Its effectiveness compared to alternative training models has been under scrutiny. Physical fitness scores of Serbian male (n = 98) and female (n = 79) police cadets during their yearly evaluation were compared. Cadets trained for the first 3 years with the "one-size-fits-all" model. In the fourth year, they self-prescribed an individualized exercise program based on the obtained curriculum knowledge. A two-way MANOVA revealed a significant effect of academic years on combined variables (p < 0.001) and significant differences between academic years for deadlift, half squat, standing long jump, sit-ups and 12-min Cooper test time (p < 0.001). Sex also had a significant main effect on combined variables (p < 0.001) with males outscoring females on all of the fitness assessments. For pull-ups, there was a significant year * sex interaction (p = 0.01) with the third year to be pivotal for female and male performance, respectively. In conclusion, the use of a "one-size-fits-all" model, presented differences in physical fitness scores between the years one to three, pointing to its questionable effectiveness. On the contrary, the self-prescribed individualized exercise program of the fourth year elicited greater fitness scores, indicating the need to evaluate the applicability of such a training model more.

How Does Time Spent Working in Custody Influence Health and Fitness Characteristics of Law Enforcement Officers?

This study investigated the influence of time spent working in custody on the health and fitness of law enforcement officers (LEOs). Retrospective analysis was conducted on data from 48 male and 12 female LEOs, divided into groups based upon time spent working custody: LEO ≤ 24 (≤24 months; n = 15); LEO 2547 (25-47 months; n = 24); and LEO 48+ (≥48 months; n = 21). The following were measured: body mass index (BMI); fat mass percentage; waist-to-hip ratio (WHR); resting heart rate (RHR); blood pressure; grip strength; sit-and-reach; push-ups; sit-ups; and YMCA step test recovery heart rate (HR). A univariate ANCOVA (controlling for sex and age) with Bonferroni post hoc determined significant between-group differences. Select assessments were compared to normative data. The LEO 48+ group completed fewer sit-ups than the LEO 2547 group (p = 0.006); there were no other significant between-group differences. Forty-nine LEOs were overweight or obese according to BMI; 52 were fatter than average or above; 27 had a WHR that increased cardiovascular disease risk. Forty-three LEOs had very poor RHR; 52 had elevated blood pressure. Forty-eight LEOs had average-to-very poor step test recovery HR. Irrespective of time spent working in custody, personnel should be physically active to maintain health and fitness and, where possible, engage in formal strength training and conditioning.

Are There Differences in Fitness between Recruits from Larger (Hosting) and Smaller (Participating) Law Enforcement Agencies?

Law enforcement agencies often conduct academy training classes that include recruits hired by both the larger hosting agency (HA), and by smaller participating agencies (PA). HAs that need to fill more positions may have recruits with a wide range of fitness levels. Smaller agencies may be more selective in their hiring as they do not have as many available positions. This study compared HA and PA recruit fitness prior to academy. Retrospective analysis was conducted on 11 academy classes, incorporating 742 HA recruits (602 males, 140 females) and 99 PA recruits (82 males, 17 females). The following fitness tests were administered prior to academy: push-ups and sit-ups completed in 60 seconds, vertical jump; 2-kg medicine ball throw, 75-yard pursuit run, and 20-m multistage fitness test. A univariate analysis of variance, with sex as a covariate, analyzed each fitness test to determine any differences between HA and PA recruits. Effect sizes were also calculated. There were significant differences in push-up (p = 0.034, d = 0.22) and situp (p < 0.001, d = 0.47) repetitions between HA and PA recruits. PA recruits completed ~8% and ~12% more repetitions, respectively. There were trivial differences between HA and PA recruits in the other fitness tests, although HA recruits tended to have a wider range of fitness levels. The push-up and sit-up differences may provide some indication that PA were more selective in their hiring. Nonetheless, staff should recognize that individual fitness differences may exist in recruits from different agencies prior to academy training.

The Influence of Aerobic Fitness on Heart Rate Responses of Custody Assistant Recruits during Circuit Training Sessions

This study captured heart rate (HR) responses of custody assistant (CA) recruits undertaking circuit training sessions. Data from 10 male and 12 female CA recruits were analyzed. Based on YMCA step test recovery HR, recruits were divided into higher fitness (HF; top 25%), lower fitness (LF; bottom 25%), and moderate fitness (MF; remaining recruits) groups. HR was measured during two circuit training sessions featuring calisthenics and running. HR zones were defined as: very light (<57% of age-predicted maximum heart-rate [HRmax]); light (57-63% HRmax); moderate (64-76% HRmax); vigorous (77-95% HRmax); and very vigorous (>95% HRmax). A one-way ANOVA, with Bonferroni post hoc, calculated between-group differences in time spent, and percentage of total time, in the HR zones. In session one, the LF group spent less time in the light training zone compared to the MF group, and more time in the very vigorous zone compared to the HF group (p = 0.027-0.047). In session two, the LF group spent more time in the moderate zone compared to both groups, and a greater percentage of time in the very vigorous zone compared to the MF group (p = 0.002-0.004). LF recruits generally worked harder during circuit training than their fitter counterparts, which supported recommendations for ability-based modifications.