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New article alert!
Apr 12, 2020
New article alert!
Apr 12, 2020

Association of Sex-Related Differences in Body Composition to Change of Direction Speed in Police Officers While Carrying Load

ABSTRACT:

Association of Sex-Related Differences in Body Composition to Change of Direction Speed in Police Officers While…

New article alert!

Posted: Apr 12, 2020

Association of Sex-Related Differences in Body Composition to Change of Direction Speed in Police Officers While Carrying Load

ABSTRACT:

Regardless of sex or body size, police tasks may require officers to change direction speed (CODS) under occupational loads. The purpose of this study was to investigate body composition and CODS in female and male police cadets in both unloaded and occupationally loaded conditions. Body composition and CODS of 51 female (FPC) and 70 male police cadets (MPC) were assessed. Six body composition indices were used: Body mass index (BMI), percent body fat (PBF), percent of skeletal muscle mass (PSMM), protein fat index (PFI), index of hypokinesia (IH), and skeletal muscle mass index (SMMI). The CODS was assessed by Illinois Agility Test (IAT) and IAT while carrying a 10-kg load (LIAT). An independent sample t-test was used to identify the differences between the sexes. The regression determined associations between body composition and LIAT. The alpha level was set at p < 0.05 a priori. MPC had significantly higher (p < 0.001) BMI, PSMM, PFI and SMMI and lower PBF and IH than FPC. MPC were also faster in IAT and LIAT, carrying lower relative loads that imparted less of an impact on CODS performance. Body composition was strongly associated with the time to complete LIAT (R2 = 0.671, p < 0.001). Difference in relative load and body composition influenced CODS performance in both unloaded and loaded conditions. Thus, optimizing body composition through increasing skeletal muscle mass and reducing fat mass could positively influence unloaded and loaded CODS performance and improve elements of police task performance.

 

URL: https://scielo.conicyt.cl/scielo.php?pid=S0717-95022020000300731&script=sci_arttext&tlng=n

New article alert!
Apr 12, 2020
New article alert!
Apr 12, 2020

The effects of body armour on mobility and postural control of police officers

ABSTRACT:

The effects of body armour on mobility and postural control of police officers

ABSTRACT:

New article alert!

Posted: Apr 12, 2020

The effects of body armour on mobility and postural control of police officers

ABSTRACT:

Background: Police officer use of Individual Light Armour Vests (ILAVs) is increasing due to potential occupational hazards that include blunt trauma, stabbing and light calibre bullets. It is unclear how addition of this extra load will affect the officer’s mobility or postural control.

Objectives: The aim of this study was to determine the effects of various ILAVs on the mobility and postural control of police officers when compared to wearing their normal station wear.

Methods: A prospective, within-subjects, repeated measures study was conducted in which officers wore one of three different ILAV variants or normal station wear (N) and acted as their own controls. Officer mobility was assessed via the Functional Movement Screen (FMS) and postural sway (including total sway, average sway velocity, medial-lateral velocity, anterior-posterior velocity and total excursion area) via force plate.

Results: Significant differences were found between ILAV or N conditions in various components of the FMS, including (R) Straight Leg Raise, (L) Shoulder Mobility and both (R) and (L) quad rotary stability. No significant differences were found in any of the balance measures between these conditions.

Conclusion: It appears ILAVs can significantly affect police officer mobility and therefore may contribute to injury risk and decreased ability to complete occupational tasks, though this should be weighed against protective benefits. ILAVs should therefore be carefully selected to minimise injury risk without detracting from occupational performance.

URL: https://www.bodyworkmovementtherapies.com/article/S1360-8592(20)30053-X/fulltext

New article alert!
Apr 12, 2020
New article alert!
Apr 12, 2020

The Relationship Between Acute: Chronic Workload Ratios and Injury Risk in Sports: A Systematic Review

ABSTRACT:

The Relationship Between Acute: Chronic Workload Ratios and Injury Risk in Sports: A Systematic Review

New article alert!

Posted: Apr 12, 2020

The Relationship Between Acute: Chronic Workload Ratios and Injury Risk in Sports: A Systematic Review

ABSTRACT:

Purpose: Low injury rates have previously been correlated with sporting team success, highlighting the importance of injury prevention programs. Recent methods, such as acute:chronic workload ratios (ACWR) have been developed in an attempt to predict and manage injury risk; however, the relation between these methods and injury risk is unclear. The aim of this systematic review was to identify and synthesize the key findings of studies that have investigated the relationship between ACWR and injury risk.
Methods: Included studies were critically appraised using the Downs and Black checklist, and a level of evidence was determined. Relevant data were extracted, tabulated, and synthesized.
Results: Twenty-seven studies were included for review and ranged in percentage quality scores from 48.2% to 64.3%. Almost perfect interrater agreement (κ = 0.885) existed between raters. This review found a high variability between studies with different variables studied (total distance versus high speed running), as well as differences between ratios analyzed (1.50– 1.80 versus ≥ 1.50), and reference groups (a reference group of 0.80– 1.20 versus ≤ 0.85).
Conclusion: Considering the high variability, it appears that utilizing ACWR for external (eg, total distance) and internal (eg, heart rate) loads may be related to injury risk. Calculating ACWR using exponentially weighted moving averages may potentially result in a more sensitive measure. There also appears to be a trend towards the ratios of 0.80– 1.30 demonstrating the lowest risk of injury. However, there may be issues with the ACWR method that must be addressed before it is confidently used to mitigate injury risk. Utilizing standardized approaches will allow for more objective conclusions to be drawn across multiple populations.

URL: https://www.dovepress.com/the-relationship-between-acute-chronic-workload-ratios-and-injury-risk-peer-reviewed-article-OAJSM

 

New article alert!
Apr 12, 2020

New article alert!

Posted: Apr 12, 2020

Heart Rate Responses during Simulated Fire Ground Scenarios among Full-Time Firefighters

ABSTRACT:

 Simulated fire ground scenarios (SFGS) provide firefighters with an opportunity to maintain skills, receive feedback, and optimize performance. Although there is extensive research on heart rate (HR) changes in the firefighter population, few examine the differences between positions. Firefighters are primarily responsible for fire suppression and control (23), officers for emergency operations and organizational management, paramedics for providing on-scene emergency medical care, and drivers are responsible for driving the fire apparatus. Utilizing HR analysis to quantify the physical demands of SFGS among firefighting crews by position. Sixty-seven male (age: 38.97 ± 9.17; ht: 177.99 ± 6.45 cm. wt: 88.83 ± 13.55 kg) firefighters (FF) participated in this investigation. FF crews performed two SFGS involving the suppression and control of a structural fire. Participants were outfitted with heart rate (HR) monitors and average heart rate (HRavg) and maximum heart rate (HRmax) data were collected for each of the two SFGS. Significant differences were observed for Age (P = 0.01), APMHR (P = 0.01), HRmax1(P = 0.04), and HRmax2(P = 0.04) in which firefighters had higher values for Age-predicted maximal heart rate (APMHR), HRmax1, HRmax2compared to the officers. SFGS can be very physically demanding events that may elicit maximal or near maximal HR responses regardless of position. Based on the metabolic demands of these events and the individual firefighter’s capabilities, this information can be used to develop resistance training and conditioning programs that optimize performance at maximal or near maximal heart rates.

URL: https://digitalcommons.wku.edu/ijes/vol13/iss2/10/

New article alert!
Apr 12, 2020

New article alert!

Posted: Apr 12, 2020

Recruit Fitness Standards From a Large Law Enforcement Agency: Between-Class Comparisons, Percentile Rankings, and Implications for Physical Training

ABSTRACT

Between-class comparisons, percentile rankings, and implications for physical training. J Strength Cond Res 34(4): 934–941, 2020—Law enforcement can be a physically demanding profession. Many agencies use a “one-size-fits-all” academy training approach, which may not be optimal for all recruits. There is also little information that benchmarks fitness of law enforcement recruits. The purpose of this study was to analyze between-academy class differences in fitness, as well as produce normative data for the development of strength and conditioning programs. A retrospective analysis of 908 recruits (761 men and 147 women), comprising 11 classes from one agency, was used. Fitness assessment data included push-ups, sit-ups, and mountain climbers in 120 seconds; pull-ups; 201-m run; and 2.4-km run. A one-way analysis of variance with a Bonferroni post hoc adjustment revealed that fitness varied significantly between classes. Class 11 completed less sit-ups than 6 other classes (p ≤ 0.033) and were slower in the 201-m and 2.4-km run than 5 classes (p ≤ 0.005). Class 7 completed less push-ups than 3 classes (p ≤ 0.036) and less mountain climbers and were slower in the 201-m run than 5 classes (p ≤ 0.005). Individual recruit analysis and percentile data indicated a wide spread of all assessment results and the effects upon female recruits. For example, 81% of women completed ≤2 pull-ups and were in the bottom 2 percentile bands; 72–76% of women were in the bottom 3 bands for push-ups and the 201-m run. Fitness varies from class-to-class, and female recruits will generally be less physically fit. Training staff should ideally implement individualized, ability-based programming where appropriate to train their recruits.

URL:https://journals.lww.com/nsca-jscr/Abstract/2020/04000/Recruit_Fitness_Standards_From_a_Large_Law.7.aspx

 

New article alert!
Feb 25, 2020
New article alert!
Feb 25, 2020

The Relationship Between Strength Measures and Task Performance in Specialist Tactical Police

ABSTRACT

The Relationship Between Strength Measures and Task Performance in Specialist Tactical Police

ABSTRACT…

New article alert!

Posted: Feb 25, 2020

The Relationship Between Strength Measures and Task Performance in Specialist Tactical Police

ABSTRACT

Specialist tactical police officers (STPOs) carry heavier on-body loads than generalist police officers. Improvements in strength may mitigate the impacts of these heavier loads. The aim of this investigation was to determine the correlations between absolute and relative strength measures and occupational task performance in STPOs. Retrospective data were provided for 47 male specialist police officers from an elite Australian police unit. Data included body mass (mean = 89.0 ± 8.58 kg), strength measures (1 repetition maximum measures for a bench press, squat, deadlift, and pull-up), and task performance measures (85-kg victim drag wearing 15 kg of operational load and 5-km pack march wearing 40 kg of operational load). Pearson's correlations were conducted to determine relationships between measures and were plotted on a linear regressions model. Significant, moderate to strong correlations were found between all strength measures and victim drag performance and significant negative moderate correlations between relative bench press, absolute and relative squat, and absolute and relative pull-up and pack march times. The absolute deadlift had the strongest correlation to the victim drag (r = 0.747, p < 0.01) while the relative pull-up showed the strongest correlation with pack march performance (r = −0.466, p < 0.01). The requirement to lift a portion of the dummy off the ground during the victim drag may explain the increased importance of absolute strength while the requirement to transport load affixed to the body may explain the importance of relative strength requirements. Improvements in absolute and relative upper- and lower-body strength may improve task performance in this population.

URL:https://journals.lww.com/nsca-jscr/Abstract/publishahead/The_Relationship_Between_Strength_Measures_and.94511.aspx

5th International Congress on Soldier Physical…
Feb 25, 2020
5th International Congress on Soldier Physical Performance
Feb 25, 2020

5th International Congress on Soldier Physical Performance

5th International Congress on Soldier Physical Performance

The TRU team have just returned after…

5th International Congress on Soldier Physical Performance

Posted: Feb 25, 2020

5th International Congress on Soldier Physical Performance

The TRU team have just returned after another successful congress. 14 Poster and 4 Podium presentations, collaborations, network meetings and formal and social events kept team busy. 

From the Field: VR Stress
Jan 31, 2020
From the Field: VR Stress
Jan 31, 2020

From the Field: VR Stress

From the Field: VR Stress

The Tactical Research Unit and Bond University's Doctor of Physiotherapy…

From the Field: VR Stress

Posted: Jan 31, 2020

From the Field: VR Stress

The Tactical Research Unit and Bond University's Doctor of Physiotherapy students hit Zero Latency last night to capture data on VR stress responses and their differences between tactical and non-tactical personnel when stacking zombies. Thanks Zero Latency Brisbane for all the support.

From the Field: Reaper Shield Support System
Jan 31, 2020
From the Field: Reaper Shield Support System
Jan 31, 2020

From the Field: Reaper Shield Support System

From the Field: Reaper Shield Support System

The Tactical Research Unit from Bond University together…

From the Field: Reaper Shield Support System

Posted: Jan 31, 2020

From the Field: Reaper Shield Support System

The Tactical Research Unit from Bond University together with Doctor of Physiotherapy students were out in force capturing data on the mobility and lethality of specialist police officers wearing full gear both with and without a REAPER load distribution system

From the Field: Mounted Police
Jan 23, 2020
From the Field: Mounted Police
Jan 23, 2020

From the Field: Mounted Police Research

From the Field: Mounted Police Research

TRU staff and Doctor of Physiotherpay students are in the…

From the Field: Mounted Police

Posted: Jan 23, 2020

From the Field: Mounted Police Research

TRU staff and Doctor of Physiotherpay students are in the field collecting data for the NSW Mounted Police. The research is investigating task, injury and physical requirement differences and challenges faced by these officers