The Eau Claire Police Department, University of
Wisconsin Eau Claire, and Mayo Clinic conducted
a collaborative research project on the health benefits
of load-bearing vest carriers in comparison to the
traditional police duty belt. This summary will
address why this research occurred, study results and
implementation considerations.
PURPOSE OF THE STUDY
Policing is a physically demanding profession.
Officers wear a duty belt with over 20 pounds of
equipment, spend extended periods of time seated in
a police vehicle and deal with combative people. As
a result, the Eau Claire Police Department has a
number of Officers dealing with lower back and hip
pain. This results in a diminished quality of life, lost
time due to injury and increased healthcare costs that
are shared by our entire community.
The utilization of a load-bearing vest carrier is
commonly viewed as a healthier alternative than the
traditional duty belt for Officers to carry the required
equipment. However, there were several concerns
with transitioning all Eau Claire Police Officers to a
load-bearing vest carrier. These concerns were:
Lack of published research on efficacy of
load-bearing vest carriers.
Unintended health consequences of load-
bearing vest carriers.
A load-bearing vest carrier is inconsistent
with uniform standards.
Militaristic in appearance, does not conform
to community expectations.
In order to address these concerns collaborative
research project was conducted by the UWEC, Mayo
Clinic and the Eau Claire Police Department.
STUDY DESIGN
The six-month research project was facilitated by Dr.
Jeff Janot, Professor of Kinesiology at UWEC, and
several of his students. Additionally, support was
provided by Mayo Clinic. Fifteen Eau Claire Police
Officers volunteered as participants in this study. For
the first three months of the study, the officers were
divided into two groups, a load bearing vest group
and a duty belt group. After this initial period, officers
were reassigned to the opposite group for the last
three months. The following information was
collected during the research study:
A biometric screening involving measures of
aerobic fitness, body composition, blood
cholesterol, blood pressure, core endurance,
and spine range of motion.
An Oswestry Low Back Pain Disability
questionnaire to determine the level of the
officer’s low back functional ability.
A daily journal self-reporting the level of
lower-back and overall discomfort on a
visual-analog scale utilizing a rating of 0-10
(0 = no pain; 10 = worst pain imaginable).
Physical activity and sedentary time while on-
duty as measured by accelerometers worn by
each officer.
Informed consent for the results being shared
amongst the research partners and
documented in a written report.
For the purposes of the study, the following
equipment was moved off of the duty belt onto the
load-bearing vest carrier:
Handcuffs
Ammunition magazines
Pepper spray
Expandable baton
Portable radio
Flashlight
The handgun and electronic control device (Taser)
remained on the duty belt.
Eau Claire Police Department
Vest Summary
and
Implementation
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STUDY RESULTS
Figure 1. Average ratings of low-back discomfort
across the 6-month study period for both vest and belt
groups.
Figure 2. Average time in seconds for core endurance
measures.
Figure 3. Average scores in degrees of flexion for
spine range of motion with or without wearing the
load bearing vest.
Lower-back discomfort
The Oswestry Low Back Pain Disability
questionnaire is the gold standard of low back
functional outcome questionnaires. The score is
calculated as a percentage based on ratings out of a
total possible score of 50. The lower the percentage,
the less limited by low back issues the person is. The
Oswestry data indicated that officers reported
minimal disability (mean score was 8.1% with a
score of less than 20% indicating minimal disability)
prior to start of the study.
Figure 1 details the self-reported low-back
discomfort scores that officers provided at the end of
every shift using a 0-10 visual-analog pain and
discomfort scale. The 6-month average score that
officers reported while wearing the load bearing vest
was 0.88 (range 0-4.75 over the course of the study)
which was interpreted as little to no pain. The 6-
month average score that officers reported while
wearing the duty belt was 3.95 (range 2.0-8.5 over the
course of the study) which was interpreted as mild to
moderate pain.
Core Endurance and Spine Range of Motion
Figures 2 and 3 present the officer’s data collected for
core endurance and spine range of motion measures.
Core endurance was reported as time in seconds that
officers were able to hold four distinct postures until
absolute fatigue. Overall, core endurance for the
group was rated as average for three tests (extensor,
right side bridge, and left side bridge) and above
average for one (flexor test). Spine angle of motion
was measured using inclinometers placed on the
spine. Officers were asked to flex forward in a
standing posture while wearing the load bearing vest
and without wearing the vest. The scores in Figure 3
indicate no differences in spine motion (degrees of
flexion) with or without the load bearing vest at
selection measure points on the spine (C7 and S2).
Additionally, average total lumbar spine flexion was
within normal limits for the group.
INTERPRETATION OF FINDINGS
According to the Oswestry questionnaire data, the
officers in the study were healthy and had no
limitations regarding low back pain and disability.
Thus, if anything contributed to increased pain or
discomfort while on duty, it was not likely a pre-
Flexor
Extensor
R bridge
L Bridge
0
100
200
300
400
Tests
Time (sec)
C7 Flexion w/o vest
C7 flexion w/ vest
S2 Flexion w/o vest
S2 Flexion w/ vest
0
50
100
150
Degrees of Flexion
3
existing issue. Also, core endurance and spine range
of motion data all fell within normal limits of
function, thus indicating that it is unlikely that these
issues were contributory to any pain or discomfort
experienced while on duty. It was clear from the
visual-analog data that officers rated their pain and
discomfort significantly higher while wearing the
duty belt compared to the load bearing vest
Based on these data, it seems the load bearing vests
are more effective at evenly distributing the weight of
police equipment and put less strain on the hips and
lower back compared to the traditional duty belt.
Additionally, there were no unintended consequences
discovered related to the health of the officers or
functional safety of the vest while on duty. It could
be concluded that the use of the load bearing vest
carrier may well have potential short- and long-term
health and wellness benefits for officers.
EAU CLAIRE POLICE DEPARTMENT’S
IMPLEMENTATION
Once the study results were presented to the Eau
Claire Police Department it was determined to offer a
load-bearing vest carrier as a uniform option for all
sworn Officers. The primary implementation
concerns were functionality, maintaining uniform
standards and a militarized appearance.
All of the Officers who participated in the study were
asked to provide feedback on the load-bearing vest
carrier utilized during the study. Once these Officers
provided their thoughts on functionality, fit,
durability, and any other issues, the department began
researching load-bearing vest carrier options. The
research focused on vests that addressed the input
from the study group, maintained a professional
appearance, uniform standardization, functionality
and carried the same equipment as examined by the
study.
One area of importance identified was the challenge
some study Officers had in having adequate space on
the vest carrier for the designated equipment. Several
Officers with smaller body frames could not properly
carry all required equipment on the vest carrier.
Another area of importance identified related to
Patrol supervisors who spend significant time
working within the police department.
Bluestone Safety Products was selected as a possible
long-term option. Bluestone developed a vest carrier
intended at meeting the functionality and fit
parameters identified by the Officers who
participated in the research study. Additionally, the
vest carrier developed by Bluestone Safety products
also remained consistent with the department’s
traditional uniform.
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The Eau Claire Police Department ordered several
load-bearing vest carriers from Bluestone. These vest
carriers were worn by five Officers for a three-month
period. At the completion of this additional study
period the feedback offered by these Officers was
shared with staff at Bluestone and incorporated into
the vest carrier designed and manufactured for all Eau
Claire Police Department Officers.
The Eau Claire Police Department revised its uniform
policy to reflect the offering of a load-bearing vest
carrier as a uniform option. The updated policy
allows Patrol Officers to wear the department
approved load-bearing vest carrier as part of the
standard uniform of the day. The policy outlines that
six equipment holders are included on the vest carrier
to contain ammunition magazines, a flashlight,
expandable baton, handcuffs, pepper spray, and
portable radio. The revised policy also allowed the
exception for the portable radio to be placed on the
duty belt if space on the vest carrier is limited or a
Patrol supervisor. Officers are allowed the option of
utilizing a traditional duty belt.
A concern related to the utilization of load-bearing
vest carriers is their militarized appearance. This was
addressed through the design of the load-bearing vest
carrier and community outreach. The collaborative
nature of the research study, the evidence-based
decision making, the health benefits and the likely
cost savings made for a very positive message to
share with our community. In conjunction with
UWEC, several articles were published by local print
and internet-based media outlets as well as several
features produced by television media outlets. We
found this transparency helped garner community
understanding and support for the uniform change.
Berthiaume, Judy (2018, Nov 12) Load-bearing vest vs. duty
belt: Ergonomic researchers determine the winner.” Retrieved
from PoliceOne.co m https://www.policeone.com/Officer-
Safety/articles/482040006-Load-bearing-vest-vs-duty-belt-
Ergonomic-researchers-determine-the-winner/
If you have further questions regarding the load-
bearing vest summary or implementation, you can
contact UWEC Professor, Dr. Jeff Janot at
[email protected] or Eau Claire Police
Department Deputy Chief Matt Rokus at