PTOtherThe South African journal of physiotherapy2021

Time to re-think our strategy with musculoskeletal disorders and workstation ergonomics.

Vanessa S Redivo, Benita Olivier

PMID 33604477

WHAT IT FOUND

Computer users at work in South Africa with work-related musculoskeletal pain had similar workstation risk scores to those without work-related pain, but reported more trouble switching off from work and a stronger need for approval.

Ergonomic advice alone may miss this.

Key findings

01Mean workstation risk scores measured by ROSA did not differ between the work-related MSD group and the reference group (4.5 ± 1.0 vs 4.3 ± 0.8; p = 0.102).

02Over-commitment was higher in the MSD group than the reference group (14.9 ± 3.1 vs 13.8 ± 3.4 on a 6-25 scale; p = 0.041).

03There were no differences between groups in age, height, weight, BMI, sex or handedness.

STILL TO COME

How it was doneWhat they foundWhat it means for PTs

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What it does not show

The sample was a convenience sample from three companies, so it may not represent all South African computer users. The participants came from varied professions and occupations, which limits generalisability. The study was cross-sectional, so it cannot show whether over-commitment or workstation factors caused musculoskeletal pain. People with recent musculoskeletal surgery or current mental health treatment were excluded, so the findings may not apply to those patients. The mean age was in the early thirties, so older workers may have different risk patterns. MSD status relied on self-report and whether the participant could recall a non-work cause. The authors note ROSA limitations, including that one high sub-score can drive the final score and that low telephone scores can lower a section score. Participants may have adjusted their workstations during the assessment, which could affect the ergonomic scores.

The easy way to misread this

Do not conclude that workstation ergonomics are irrelevant to musculoskeletal pain. The study found no difference in ROSA scores between groups, but it was a convenience sample, the authors describe ROSA limitations, and a score below five still may leave room for adjustment.

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