Building the evidence
The physical stress and strains involved in the construction industry mean workers are at high risk of developing musculoskeletal disorders (MSDs). Overhead tasks such as brickwork and painting can lead to shoulder injuries in particular, and a new study has explored the impact of carrying out these actions on consecutive days.
Researchers recruited participants from across a range of trades including electricians, plumbers and drywallers. For two days, they measured their physical fatigue three times a day using a variety of tests, including maximal voluntary force, electromyography and rates of perceived exertion.
They found there was “progressive onset of shoulder fatigue” over the course of both a single shift and two consecutive working days. The results could be used to improve work planning and help spot signs of fatigue that could lead to MSDs.
The research, published in the journal Ergonomics, said: “This study reveals progressive shoulder fatigue during and across working days in construction workers performing overhead tasks.
“Through the assessment of both objective and subjective metrics, it highlights measurable fatigue effects. These findings support ergonomists in designing interventions and schedules to mitigate musculoskeletal strain and improve long-term worker health and performance.”
