Association between musculoskeletal pain and exposures to awkward postures during work: a compositional analysis approach

Author:

Lohne Fredrik Klæboe1ORCID,Xu Kailiang12,Fimland Marius Steiro13,Palarea-Albaladejo Javier4,Redzovic Skender1

Affiliation:

1. Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology , Edvard Griegs gate 8, 7030, Trondheim , Norway

2. Department of Orthopaedics, Beijing Miyun District Hospital , Yanguang Street, 383, 101500, Beijing , China

3. Unicare Helsefort Rehabilitation Centre , Hysnesveien 11, 7112, Rissa , Norway

4. Department of Computer Sciences, Applied Mathematics and Statistics, University of Girona , Carrer Universitat de Girona 6, 17003, Girona , Spain

Abstract

Abstract Objectives This study aimed to explore the association between arm elevation and neck/shoulder pain, and trunk forwarding bending and low back pain among home care workers. Methods Home care workers (N = 116) from 11 home care units in Trondheim, Norway, filled in pain assessment and working hours questionnaire, and wore 3 accelerometers for up to 7 consecutive days. Work time was partitioned into upright awkward posture, nonawkward posture, and nonupright time, i.e. sitting. Within a compositional approach framework, posture time compositions were expressed in terms of log-ratio coordinates for statistical analysis and modeling. Poisson generalized linear mixed models were used to analyze the relationship between arm elevation in upright postures and neck/shoulder pain, and between trunk forward bending in upright postures and low back pain, respectively. Isotemporal substitution analysis was used to investigate the association of pain assessment with the reallocation of time spent in the different postures. Results Time spent in awkward postures was modest, especially for the more extreme angles (60° and 90°). Adjusting for age, gender, and body mass index, our study suggested that the compositions of time spent by home care workers in awkward postures were significantly associated with pain assessment (P < 0.01). Isotemporal substitution analysis showed that reallocating 5 min from upright posture with arms elevated below to above 60° and 90° was associated with a 6.8% and 19.9% increase in the neck/shoulder pain score, respectively. Reallocating 5 min from a forward bending posture while upright below to above 30°, 60°, and 90° was associated with 1.8%, 3.5%, and 4.0% increase in low back pain, respectively. Conclusions Although the exposure to awkward postures was modest, our results showed an association between increased time spent in awkward postures and an increase in neck/shoulder pain and low back pain in home care workers. As musculoskeletal pain is the leading cause of sickness absence, these findings suggest that home care units could benefit from re-organizing work to avoid excessive arm elevation and trunk forward bending in workers.

Funder

Spanish Ministry of Science and Innovation

Norwegian Labour and Welfare Administration

Publisher

Oxford University Press (OUP)

Reference51 articles.

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2. Combined ergonomic exposures and development of musculoskeletal pain in the general working population: a prospective cohort study;Andersen,2021

3. Action levels for the prevention of work-related musculoskeletal disorders in the neck and upper extremities: a proposal;Arvidsson,2021

4. Pain severity cut-points and analgesic use by community-dwelling people for chronic pain;Brown,2012

5. Combined effects of time spent in physical activity, sedentary behaviors and sleep on obesity and cardio-metabolic health markers: a novel compositional data analysis approach;Chastin,2015

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