International Journal of Environmental Research and Public Health

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11 pages, 361 KiB

Open AccessArticle

Impact of a Season of Bike Patrol on Police Officers’ Level of Fitness: A Pilot Study

by Frédérique Lehouillier, Marc-Olivier Dugas and Martin Lavallière

Int. J. Environ. Res. Public Health 2021, 18(12), 6214; https://doi.org/10.3390/ijerph18126214 - 8 Jun 2021

Cited by 2 | Viewed by 3345

Abstract

Bike patrollers must have a good level of fitness to perform their patrolling duties adequately and effectively by bike and accomplish specific work tasks, which may require the use of various physical capacities. However, there is little information on the real workload associated [...] Read more.

Bike patrollers must have a good level of fitness to perform their patrolling duties adequately and effectively by bike and accomplish specific work tasks, which may require the use of various physical capacities. However, there is little information on the real workload associated with bike patrol and its impact on health. The purpose of this study was to assess the general physical fitness of police officers before and after a season of bike patrolling and then quantify its effects on each patroller’s health. All six male police officers (29.5 ± 4.3 years old) performed two complete physical fitness evaluations (PRE- and POST-season), which included anthropometric measurements (weight, waist circumference, and body mass index), a push-up test, a sit-up test, a grip strength test, a vertical jump test, a sit-and-reach test, and an aerobic capacity test on a bicycle ergometer. Paired t-tests were used to evaluate the differences in test performance between the PRE- and POST-season. Grip strength, estimated VO₂max, and power deployed on the bike all showed significant improvement after the season (p-value 0.0133; 0.007; and 0.003, respectively). No significant differences were found among the evaluation’s other components (p > 0.05). Results show the workload associated with a bike patrol season caused a considerable improvement in grip strength, VO₂max, and power deployed on the bike, and might be beneficial for their overall health as a work-integrated avenue to keep the officers fit for duty. Further research on the subject is suggested. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

13 pages, 3175 KiB

Open AccessArticle

Isokinetic Strength, Vertical Jump Performance, and Strength Differences in First Line Professional Firefighters Competing in Fire Sport

by Petr Miratsky, Tomas Gryc, Lee Cabell, Frantisek Zahalka, Matej Brozka, Matej Varjan and Tomas Maly

Int. J. Environ. Res. Public Health 2021, 18(7), 3448; https://doi.org/10.3390/ijerph18073448 - 26 Mar 2021

Cited by 3 | Viewed by 3502

Abstract

The purpose of our study was to investigate peak torque (PT) of knee extensors (KE) and knee flexors (KF), bilateral and unilateral strength asymmetries in isokinetic testing and vertical jump height (JH), vertical ground reaction force (VGRF), and force differences (_ΔVGRF) [...] Read more.

The purpose of our study was to investigate peak torque (PT) of knee extensors (KE) and knee flexors (KF), bilateral and unilateral strength asymmetries in isokinetic testing and vertical jump height (JH), vertical ground reaction force (VGRF), and force differences (_ΔVGRF) between legs during different jump tests in professional first-line firefighters (n = 15) competing in fire sports disciplines. There was a significant effect of jump type on JH (F_2,44 = 7.23, p < 0.05), VGRF (F_2,44 = 16.03, p < 0.05), and _ΔVGRF (F_2,44 = 3.45, p < 0.05). Professional firefighters achieved a mean JH of 50.17 cm in the countermovement jump free arms and high PT of KEs (3.15 Nm/kg). No significant differences (p > 0.05) and small effect sizes (d < 0.3) were found between the legs when PTs were assessed. We found a slightly higher (d = 0.53) unilateral strength ratio in non-dominant legs (58.12 ± 10.26%) compared to dominant legs (55.31 ± 7.51%). No effect of laterality was found among limb comparisons, but a higher unilateral isokinetic strength ratio was found in non-dominant legs of firefighters. A high level of strength (PT of KEs > 3 times body weight) and vertical jump performance is comparable to the performance of elite athletic populations. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

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8 pages, 320 KiB

Open AccessArticle

Influence of Body Composition on Post-Exercise Parasympathetic Reactivation of Firefighter Recruits

by David J. Cornell, Sabrina E. Noel, Xiyuan Zhang and Kyle T. Ebersole

Int. J. Environ. Res. Public Health 2021, 18(1), 339; https://doi.org/10.3390/ijerph18010339 - 5 Jan 2021

Cited by 11 | Viewed by 3376

Abstract

Firefighters have a sustained risk for experiencing a sudden cardiac event after completing a fire call. Heart rate recovery (HRR) can be utilized to characterize autonomic nervous system (ANS) recovery and has been linked to cardiac events. Research suggests that body composition influences [...] Read more.

Firefighters have a sustained risk for experiencing a sudden cardiac event after completing a fire call. Heart rate recovery (HRR) can be utilized to characterize autonomic nervous system (ANS) recovery and has been linked to cardiac events. Research suggests that body composition influences post-exercise HRR responses in non-firefighter populations. The purpose of this study was to examine the influence of body mass index (BMI), waist circumference (WC), and percent body fat (BF) on the HRR response of firefighter recruits. BMI (kg·m⁻²), WC (cm), and BF (%) data from 57 firefighter recruits were collected. HRR (b·min⁻¹) data were collected at completion (HR₀), as well as 15 (HR₁₅), 30 (HR₃₀), 45 (HR₄₅), 60 (HR₆₀), 120 (HR₁₂₀), and 180 (HR₁₈₀) seconds following a submaximal step test, and commonly utilized clinical HRR indices were calculated (ΔHRR₃₀, ΔHRR₆₀, ΔHRR₁₂₀, and ΔHRR₁₈₀). After controlling for sex, linear mixed regression models did not identify significant interactions between body composition (ps > 0.05) and HRR response across time. However, significant (ps < 0.05) indirect semi-partial correlations were identified between BF and ΔHRR₃₀ (r_sp = −0.31) and ΔHRR₆₀ (r_sp = −0.27), respectively. Reducing overall BF (vs. BMI or WC) should be prioritized to improve the post-exercise ANS recovery of firefighter recruits. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

11 pages, 2934 KiB

Open AccessArticle

Training-Induced Acute Neuromuscular Responses to Military Specific Test during a Six-Month Military Operation

by Kai Pihlainen, Arto J Pesola, Joonas Helén, Keijo Häkkinen, Taija Finni, Tommi Ojanen, Jani P. Vaara, Matti Santtila, Jani Raitanen and Heikki Kyröläinen

Int. J. Environ. Res. Public Health 2021, 18(1), 215; https://doi.org/10.3390/ijerph18010215 - 30 Dec 2020

Cited by 5 | Viewed by 4450

Abstract

Limited data are available regarding strength and endurance training adaptations to occupational physical performance during deployment. This study assessed acute training-induced changes in neuromuscular (electromyography; EMG) and metabolic (blood lactate, BLa) responses during a high-intensity military simulation test (MST), performed in the beginning [...] Read more.

Limited data are available regarding strength and endurance training adaptations to occupational physical performance during deployment. This study assessed acute training-induced changes in neuromuscular (electromyography; EMG) and metabolic (blood lactate, BLa) responses during a high-intensity military simulation test (MST), performed in the beginning (PRE) and at the end (POST) of a six-month crisis-management operation. MST time shortened (145 ± 21 vs. 129 ± 16 s, −10 ± 7%, p < 0.001) during the operation. Normalized muscle activity increased from PRE to POST in the hamstring muscles by 87 ± 146% (116 ± 52 vs. 195 ± 139%EMG_MVC, p < 0.001) and in the quadriceps by 54 ± 81% (26 ± 8 vs. 40 ± 20%EMG_MVC, p < 0.001). In addition, higher acute BLa values were measured after MST during POST. Changes in BLa and EMG suggested an increased neural input and metabolic rate during POST MST, likely leading to faster performance times at the end of the operation. High EMG values throughout the different phases of MST suggested that despite the anaerobic nature of the test, the soldiers were able to maintain their voluntary muscle activation level until the end of the test. This indicates only limited neural fatigue during the two-minute high-intensity military specific performance. While learning effect may explain some part of the improvement in the MST performance times, combined strength and endurance training three times per week may improve neuromuscular performance in occupationally relevant tasks. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

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10 pages, 616 KiB

Open AccessArticle

Influence of a Training Academy on the Parasympathetic Nervous System Reactivation of Firefighter Recruits—An Observational Cohort Study

by David J. Cornell, Sabrina E. Noel, Xiyuan Zhang and Kyle T. Ebersole

Int. J. Environ. Res. Public Health 2021, 18(1), 109; https://doi.org/10.3390/ijerph18010109 - 26 Dec 2020

Cited by 6 | Viewed by 3223

Abstract

Sudden cardiac death (SCD) is the leading type of line-of-duty death among firefighters. An inability to restore parasympathetic nervous system (PSNS) control after activity is associated with SCD. Post-exercise heart rate recovery (HRR) provides unique insight into reactivation of the PSNS. Thus, the [...] Read more.

Sudden cardiac death (SCD) is the leading type of line-of-duty death among firefighters. An inability to restore parasympathetic nervous system (PSNS) control after activity is associated with SCD. Post-exercise heart rate recovery (HRR) provides unique insight into reactivation of the PSNS. Thus, the purpose of this study was to examine longitudinal changes in HRR responses of 25 male firefighter recruits. HR data were collected after submaximal exercise at week 1 (W1), week 6 (W6), and week 15 (W15) of their training at an academy. Percent maximal heart rate (%MHR) measures were computed at each HRR time point (%MHR₀, %MHR₁₅, %MHR₃₀, %MHR₄₅, %MHR₆₀, %MHR₁₂₀, %MHR₁₈₀) and absolute HRR values were calculated at 30 s (ΔHRR₃₀), 60 s (ΔHRR₆₀), 120 s (ΔHRR₁₂₀), and 180 s (ΔHRR₁₈₀). After controlling for age and percent body fat, there was no statistically significant interaction between Week × HRR (p = 0.730), and there were no changes in ΔHRR₃₀, ΔHRR₆₀, and ΔHRR₁₂₀, and ΔHRR₁₈₀ indices across time. However, %MHR at W6 and W15 was significantly lower than %MHR at W1 at every HRR time point (ps < 0.001). Therefore, although the firefighter recruit training academy elicited positive training adaptations, changes in PSNS reactivation after submaximal activity were not identified. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

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8 pages, 634 KiB

Open AccessCommunication

Muscular Fitness Improves during the First Year of Academy Studies among Fighter Pilot Cadets

by Tuomas Honkanen, Harri Rintala, Jani P. Vaara and Heikki Kyröläinen

Int. J. Environ. Res. Public Health 2020, 17(24), 9168; https://doi.org/10.3390/ijerph17249168 - 8 Dec 2020

Cited by 3 | Viewed by 2959

Abstract

Background: An adequate level of muscular fitness is related to occupational performance in military personnel, including pilots flying high performance aircraft. The aim of this study was to describe the baseline level and the change in muscular fitness between the first and [...] Read more.

Background: An adequate level of muscular fitness is related to occupational performance in military personnel, including pilots flying high performance aircraft. The aim of this study was to describe the baseline level and the change in muscular fitness between the first and the second years of the Air Force Academy among fighter pilot cadets. Methods: The muscular strength and endurance test results of 182 male fighter pilot cadets were analyzed during their first year in the Air Force Academy and one year after. Maximal isometric strength tests included trunk flexion, trunk extension and bilateral leg extension tests, whereas muscle endurance was measured with modified a sit-up test and seated alternative dumbbell press. Results: The maximal isometric bilateral strength of the leg extensor muscles increased from 220 ± 42 to 232 ± 42 kg. The maximal isometric trunk extension strength increased from 117 ± 21 to 120 ± 19 kg and trunk flexion from 82 ± 16 to 86 ± 17 kg. Muscle endurance increased from 68 ± 13 to 75 ± 15 repetitions/min in seated dumbbell press and from 47 ± 12 to 51 ± 13 repetitions/min in sit-up test. Conclusions: Both maximal strength and muscular endurance improved among fighter pilot cadets, which indicates that occupational performance is well maintained or improved from the perspective of physical fitness during the early phase of academy studies. Education in the Air Force Academy, including physical education, seems beneficial in improving muscular fitness among military pilots. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

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15 pages, 669 KiB

Open AccessArticle

Can Physiological and Psychological Factors Predict Dropout from Intense 10-Day Winter Military Survival Training?

by Jani P Vaara, Liisa Eränen, Tommi Ojanen, Kai Pihlainen, Tarja Nykänen, Kari Kallinen, Risto Heikkinen and Heikki Kyröläinen

Int. J. Environ. Res. Public Health 2020, 17(23), 9064; https://doi.org/10.3390/ijerph17239064 - 4 Dec 2020

Cited by 18 | Viewed by 4198

Abstract

Background: In the military context, high levels of physiological and psychological stress together can compromise individual’s ability to complete given duty or mission and increase dropout rates. The purpose of this study was to investigate if baseline physical fitness, body composition, hormonal and [...] Read more.

Background: In the military context, high levels of physiological and psychological stress together can compromise individual’s ability to complete given duty or mission and increase dropout rates. The purpose of this study was to investigate if baseline physical fitness, body composition, hormonal and psychological factors could predict dropout from a 10-day intense winter military survival training. Methods: 69 conscripts volunteered to participate in the study. Physical fitness (muscle strength and power, muscle endurance, and aerobic fitness), body composition and hormonal variables (BDNF, testosterone, cortisol, SHBG, DHEAS, IGF-1) together with self-reported psychological factors (short five personality, hardiness, sense of coherence, stress, depression) were assessed prior the survival training. Results: During the survival training, 20 conscripts (29%) dropped out. Baseline aerobic fitness (hazard ratio, HR: 0.997, 95% CI: 0.994–0.999, p = 0.006) and serum cortisol (HR: 1.0006, 95% CI: 1.001–1.011, p = 0.017) predicted dropout in Cox regression model. Each 10 m increase in the 12 min running test decreased the risk for dropout by 3%. Conclusion: Although most of the physiological and psychological variables at the baseline did not predict dropout during a short-term winter survival military training, baseline information of aerobic fitness and serum cortisol concentration may be useful to target support for individuals at higher potential risk for dropout. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

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13 pages, 1014 KiB

Open AccessArticle

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

by Matthew R. Moreno, Karly A. Rodas, Ashley M. Bloodgood, J. Jay Dawes, Joseph M. Dulla, Robin M. Orr and Robert G. Lockie

Int. J. Environ. Res. Public Health 2020, 17(21), 8177; https://doi.org/10.3390/ijerph17218177 - 5 Nov 2020

Cited by 10 | Viewed by 3361

Abstract

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%), [...] Read more.

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. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

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14 pages, 534 KiB

Open AccessArticle

Special Weapons and Tactics Occupational-Specific Physical Assessments and Fitness Measures

by Jessica Strader, Ben Schram, Shane Irving, Jeremy Robinson and Robin Orr

Int. J. Environ. Res. Public Health 2020, 17(21), 8070; https://doi.org/10.3390/ijerph17218070 - 2 Nov 2020

Cited by 10 | Viewed by 3880

Abstract

Specialist tactical response police are required to frequently perform physically demanding tasks at high-risk capability levels, emphasizing the need for optimal physical fitness in this population. The aim of this study was to investigate the relationships between select measures of physical fitness and [...] Read more.

Specialist tactical response police are required to frequently perform physically demanding tasks at high-risk capability levels, emphasizing the need for optimal physical fitness in this population. The aim of this study was to investigate the relationships between select measures of physical fitness and performance on an occupational-specific physical assessment (OSPA). A retrospective analysis on 18 male specialist police candidates (age = 32.1 ± 5.04 yrs; height = 183.72 ± 5.79 cm; body mass = 89.44 ± 8.56 kg; body mass index (BMI) = 26.45 ± 1.58 kg/m²) was conducted. Data were comprised of anthropometric measures, assorted fitness measures and OSPA performance scores. A stepwise linear regression determined the influence of measured fitness parameters on OSPA performance. A regression featuring both the 1 RM military shoulder press and grip strength of the non-dominant hand was the most significant predictor of performance (adjusted r² = 0.565, p = 0.001). A separate model, exclusively using the 1 RM military shoulder press additionally predicted OSPA performance (adjusted r² = 0.240, p = 0.023). These results emphasize the importance of optimal upper-limb muscular strength and its impact on key occupational tasks in specialist police candidates. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

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17 pages, 1163 KiB

Open AccessArticle

Effects of Task-Specific and Strength Training on Simulated Military Task Performance in Soldiers

by Tommi Ojanen, Keijo Häkkinen, Jaakko Hanhikoski and Heikki Kyröläinen

Int. J. Environ. Res. Public Health 2020, 17(21), 8000; https://doi.org/10.3390/ijerph17218000 - 30 Oct 2020

Cited by 13 | Viewed by 4489

Abstract

A soldier’s occupational physical task requirements are diverse and varied. However, the type of physical training that most effectively improves soldiers’ occupational task requirements has not been studied previously. The purpose of this study was to determine the important strength characteristics for soldiers [...] Read more.

A soldier’s occupational physical task requirements are diverse and varied. However, the type of physical training that most effectively improves soldiers’ occupational task requirements has not been studied previously. The purpose of this study was to determine the important strength characteristics for soldiers during a repeated simulated military task course, and the type of training that may be effective to improve these abilities during a specialized military training period. Forty-two (n = 42) soldiers participated in the study. They were divided into three training groups; a soldier task-specific training group (TSG, n = 17), a strength training group (STG, n = 15), and a control group (CON, n = 10). Participants were measured before (PRE), middle (MID) and after (POST) the 12-week training intervention for strength performance and simulated military task test. Simulated military task performance improved significantly in TSG and STG between the PRE and MID measurements (from 9.4 to 15.7%). TSG and STG improved in various spilt times, especially in strength tasks; casualty drag (from 8.3 to 13.6%) and kettlebell carry (from 13.2 to 22.4%) between the PRE and MID measurements. The present study showed that both the training of TSG and STG were more effective than the training of CON (control group) in terms of improving the performance in the repeated simulated military task course. The present study showed that training of TSG was as effective as STG to improve repeated simulated military task course time. Therefore, an optimal training combination should include high-intensity simulated military task field training and strength training programmed with consideration of the military training phase and environmental possibilities. Full article

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12 pages, 339 KiB

Open AccessArticle

Perceived and Measured Physical Fitness of Police Students

by Filip Kukić, Robert G. Lockie, Ana Vesković, Nikola Petrović, Dane Subošić, Danijela Spasić, Darko Paspalj, Lazar Vulin and Nenad Koropanovski

Int. J. Environ. Res. Public Health 2020, 17(20), 7628; https://doi.org/10.3390/ijerph17207628 - 19 Oct 2020

Cited by 8 | Viewed by 4078

Abstract

The physical fitness of police officers needs to support good health and physical performance. Physical fitness comprises a considerable amount of training for police students who are to become police officers. However, to what degree police students are able to perceive their fitness [...] Read more.

The physical fitness of police officers needs to support good health and physical performance. Physical fitness comprises a considerable amount of training for police students who are to become police officers. However, to what degree police students are able to perceive their fitness level and differentiate between health-related and performance-related physical fitness is unknown. Therefore, the first aim of this study was to investigate the possibility of differentiation between health-related and performance-related physical fitness using physical self-concept and measured indicators of physical fitness. The second aim of this study was to investigate the association between components of physical self-concept and measured indicators of physical fitness of police students. The sample of 177 police students of both sexes (98 males and 79 females) completed a 40-item physical self-description questionnaire and their physical abilities were assessed for handgrip strength, standing long jump, 30 s sit-ups, and 12-min running. Principal component analysis established health-related and performance-related physical fitness from both perceived and measured physical fitness measures. Correlation analysis revealed a significant relationship between the perceived and measured physical fitness. Results suggest small to moderate ability to recognize the level of certain physical abilities, indicating the association between psychological mechanisms and biological functioning. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

12 pages, 658 KiB

Open AccessArticle

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

by Robert G. Lockie, J. Jay Dawes, Matthew R. Moreno, Megan B. McGuire, Tomas J. Ruvalcaba, Ashley M. Bloodgood, Joseph M. Dulla and Robin M. Orr

Int. J. Environ. Res. Public Health 2020, 17(20), 7512; https://doi.org/10.3390/ijerph17207512 - 15 Oct 2020

Cited by 13 | Viewed by 3579

Abstract

A challenge for law enforcement agencies is the many positions that need filling. Agencies may modify their applicant test battery (ATB; multilevelled testing including fitness, background checks, psychological evaluations) to increase the hiring pool of potential recruits by augmenting the utility of testing. [...] Read more.

A challenge for law enforcement agencies is the many positions that need filling. Agencies may modify their applicant test battery (ATB; multilevelled testing including fitness, background checks, psychological evaluations) to increase the hiring pool of potential recruits by augmenting the utility of testing. This study determined fitness differences of law enforcement recruits hired under two different ATB protocols. Retrospective analysis was conducted on seven academy classes (442 males, 84 females) hired under an older ATB, and one class (45 males, 13 females) hired under a newer ATB. Recruits completed the following before academy: 60 s push-ups and sit-ups (muscular endurance); vertical jump (lower-body power); medicine ball throw (upper-body power); 75 yard pursuit run (75PR; change-of-direction speed); and 20 m multistage fitness test (20MSFT; aerobic fitness). Independent sample t-tests (p ≤ 0.001) and effect sizes (d) evaluated between-group fitness differences for recruits hired under the different ATB protocols (combined sexes, males, and females). There were no significant differences between the ATB groups. However, newer ATB female recruits completed 13% fewer 20MSFT shuttles than the older ATB group, which, although not significant (p = 0.007), did have a moderate effect (d = 0.62). Females hired under the newer ATB had lower aerobic fitness, which could impact physical training performance and graduation. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

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11 pages, 887 KiB

Open AccessArticle

Profile of Self-Reported Physical Tasks and Physical Training in Brazilian Special Operations Units: A Web-Based Cross-Sectional Study

by Eduardo Marins, Ossian Barbosa, Eduardo Machado, Robin Orr, Jay Dawes and Fabrício Del Vecchio

Int. J. Environ. Res. Public Health 2020, 17(19), 7135; https://doi.org/10.3390/ijerph17197135 - 29 Sep 2020

Cited by 14 | Viewed by 3054

Abstract

There is limited research examining the physical tasks that Brazilian special policemen groups can perform in the line of duty. The aims of this study were to (a) identify the occupational tasks of specialist police personnel serving in the Rapid Response Group (GRR) [...] Read more.

There is limited research examining the physical tasks that Brazilian special policemen groups can perform in the line of duty. The aims of this study were to (a) identify the occupational tasks of specialist police personnel serving in the Rapid Response Group (GRR) and Tactical Operations Command (COT), and to profile the frequency, difficulty, and importance of these tasks, and (b) to explore the current physical training these special operations police units (SOPUs) officers undertake to maintain their operational fitness. Univariate analysis for numerical variables (mean and standard deviation (SD)), as well as the absolute and relative frequencies for categorical variables were performed. Two Brazilian SOPUs performed a questionnaire with demographic, performance, and physical training sections. A total of 78 respondents (24 of the GRR and 54 of the COT) completed the survey. “Standing and/or sitting with complete equipment for long periods in different climatic conditions”, and “lifting/pushing/pulling heavier objects” were the most frequent and difficult occupational tasks of both SOPUs, respectively. “Shooting a long weapon” and “breaking a door” were the most important for GRR and COT, respectively. All officers undertook regular physical training (~9 h/week), in an unstructured manner, without supervision, and planning of physical training is carried out autonomously (COT) or a mixture of autonomously and directed (GRR), with the main objectives of developing aerobic endurance and muscle strength. It is important that SOPUs teams train their members’ physical capabilities to perform the tasks identified in this study, as well as follow a structured, supervised, and planned physical training program. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

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Review

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26 pages, 2787 KiB

Open AccessReview

Monitoring Neuromuscular Performance in Military Personnel

by Justin J. Merrigan, Jason D. Stone, Andrew G. Thompson, W. Guy Hornsby and Joshua A. Hagen

Int. J. Environ. Res. Public Health 2020, 17(23), 9147; https://doi.org/10.3390/ijerph17239147 - 7 Dec 2020

Cited by 42 | Viewed by 7662

Abstract

A necessarily high standard for physical readiness in tactical environments is often accompanied by high incidences of injury due to overaccumulations of neuromuscular fatigue (NMF). To account for instances of overtraining stimulated by NMF, close monitoring of neuromuscular performance is warranted. Previously validated [...] Read more.

A necessarily high standard for physical readiness in tactical environments is often accompanied by high incidences of injury due to overaccumulations of neuromuscular fatigue (NMF). To account for instances of overtraining stimulated by NMF, close monitoring of neuromuscular performance is warranted. Previously validated tests, such as the countermovement jump, are useful means for monitoring performance adaptations, resiliency to fatigue, and risk for injury. Performing such tests on force plates provides an understanding of the movement strategy used to obtain the resulting outcome (e.g., jump height). Further, force plates afford numerous objective tests that are valid and reliable for monitoring upper and lower extremity muscular strength and power (thus sensitive to NMF) with less fatiguing and safer methods than traditional one-repetition maximum assessments. Force plates provide numerous software and testing application options that can be applied to military’s training but, to be effective, requires the practitioners to have sufficient knowledge of their functions. Therefore, this review aims to explain the functions of force plate testing as well as current best practices for utilizing force plates in military settings and disseminate protocols for valid and reliable testing to collect key variables that translate to physical performance capacities. Full article

(This article belongs to the Special Issue Testing and Physical Conditioning for Tactical Populations)

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