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Duty belt or load-bearing vest? Discomfort and pressure distribution for police driving standard fleet vehicles
Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering. Högskolan i Jönköping, Hälsohögskolan, HHJ. ADULT.ORCID-id: 0000-0001-7389-7080
Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering. Högskolan i Jönköping, Hälsohögskolan, HHJ. CHILD.ORCID-id: 0000-0001-8994-8786
Department of Orthopaedics, Institute of Clinical Sciences, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden.
2019 (engelsk)Inngår i: Applied Ergonomics, ISSN 0003-6870, E-ISSN 1872-9126, Vol. 80, s. 146-151Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Police working in active duty have a high prevalence of musculoskeletal pain, with lower back pain being the most frequently reported. As a part of uniform regulations, Swedish police are mandated to wear body armour and duty belts at all times during work. This study aimed to investigate the effect of different load carriage designs on in-vehicle sitting pressure and self-rated discomfort among police. Results showed less discomfort when wearing the alternate load carriage system incorporating a load-bearing vest and thigh holster compared to the standard load carriage system consisting of a duty belt. Pressures in the lower back were reduced when wearing the load-bearing vest whereas pressures in the upper back region increased. Relocating appointments away from the waist has the potential to improve sitting positions and the ergonomic situation for police when driving fleet vehicles.

sted, utgiver, år, opplag, sider
Elsevier, 2019. Vol. 80, s. 146-151
Emneord [en]
Driving, Law enforcement, Lower back, Occupational health, Protective equipment
HSV kategori
Identifikatorer
URN: urn:nbn:se:hj:diva-39059DOI: 10.1016/j.apergo.2019.05.017ISI: 000477687200017PubMedID: 31280798Scopus ID: 2-s2.0-85066295219Lokal ID: PP HHJ 2019 embargo 24OAI: oai:DiVA.org:hj-39059DiVA, id: diva2:1193715
Merknad

Included in thesis in manuscript form.

Tilgjengelig fra: 2018-03-27 Laget: 2018-03-27 Sist oppdatert: 2019-12-12bibliografisk kontrollert
Inngår i avhandling
1. Factors related to musculoskeletal disorders in Swedish police
Åpne denne publikasjonen i ny fane eller vindu >>Factors related to musculoskeletal disorders in Swedish police
2018 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Background: Police working in active duty are subject to occupation-specific exposures in the workplace which could place them at an increased risk of developing musculoskeletal disorders. These exposures include the requirement to wear a duty belt and body armour as well as sitting for long periods in fleet vehicles. It is well recognised that the development of musculoskeletal disorders is multifactorial and that both physical and psychosocial workplace factors must be considered when addressing this issue.

Aim: The overall aim of this thesis was to increase knowledge related to musculoskeletal disorders in Swedish police by exploring the prevalence of pain and its relationship to physical and psychosocial factors in the work environment.

Methods: Studies included in this thesis were conducted using different quantitative methods. Studies I and II were based on data from a self-administered online survey, distributed to all police officers working in active duty. Descriptive statistics and regression analyses were used to document the prevalence of musculoskeletal pain and the effects of exposure variables (physical and psychosocial) and covariates on multi-site pain. Study III was conducted using a three-dimensional gait analysis system incorporating two force plates to explore the effect of different load carriage systems on kinematic and kinetic variables. Study IV included the same three conditions as in Study III but investigated sitting postures and comfort. A pressure mat was utilised to determine contact pressure and contact area while sitting in and driving police vehicles while a survey was used to measure experienced discomfort related to the vehicle seat. Non-parametric statistical tests were used to investigate differences between load carriage conditions in Studies III and IV.

Results: The results of this thesis revealed that the most frequently reported musculoskeletal disorder among Swedish police working in active duty was lower back pain (43.2%) and that multi-site musculoskeletal pain (41.3%) was twice as prevalent as single-site pain (19.7 The physical workplace factor with the greatest association to multi-site musculoskeletal pain was found for individuals reporting discomfort experienced from wearing duty belts (OR 5.42 (95% CI 4.56 – 6.43)). The psychosocial workplace factor with the greatest association to multi-site musculoskeletal pain was found for individuals reporting high-strain jobs (OR 1.84 (95% CI 1.51 – 2.24)). Wearing body armour, or body armour combined with a load-bearing vest, resulted in less rotation of the trunk when compared to not wearing any equipment. Wearing a thigh holster and load-bearing vest allowed for a greater range of rotation in the right hip compared to the standard load-bearing condition, which incorporated a belt-mounted hip holster. Kinetics of the ankle joints were greater for both load carriage conditions compared to the control condition. Discomfort ratings revealed a clear preference for the alternate load-carriage condition. The lower back was found to be the body region with most experienced discomfort (30.5; IQR 11 - 42 mm). Pressure data demonstrated that wearing a thigh holster and load-bearing vest resulted in less pressure in the lower back when compared to the standard load carriage condition. At the same time, contact pressure in the upper back increased followed by a decrease in contact area.

Conclusion: Musculoskeletal pain is a considerable problem among Swedish police with lower back pain being the most frequently reported pain site. Multi-site musculoskeletal pain was found to be more common than single-site pain and both physical and psychosocial factors were associated to multi-site musculoskeletal pain. Of the exposures studied in this thesis, duty belts and high strain jobs were found to have the greatest association to musculoskeletal pain. The use of load-bearing vest and thigh holster were found to affect levels of discomfort, especially while driving. Also, range of motion in the trunk and right hip was affected by wearing mandatory equipment.

sted, utgiver, år, opplag, sider
Jönköping: Jönköping University, School of Health and Welfare, 2018. s. 80
Serie
Dissertation Series. School of Health and Welfare, ISSN 1654-3602 ; 088
Emneord
Load carriage, Musculoskeletal pain, Occupational health, Police
HSV kategori
Identifikatorer
urn:nbn:se:hj:diva-39061 (URN)978-91-85835-87-4 (ISBN)
Disputas
2018-04-27, Forum Humanum, School of Health and Welfare, Jönköping, 10:00 (svensk)
Opponent
Veileder
Tilgjengelig fra: 2018-03-27 Laget: 2018-03-27 Sist oppdatert: 2019-12-12bibliografisk kontrollert

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