A comparison of trunk biomechanics, musculoskeletal discomfort and productivity during simulated sit-stand office work.
Ergonomics
; 59(10): 1275-1287, 2016 Oct.
Article
em En
| MEDLINE
| ID: mdl-26804548
ABSTRACT
Sedentary office work has been shown to cause low back discomfort and potentially cause injury. Prolonged standing work has been shown to cause discomfort. The implementation of a sit-stand paradigm is hypothesised to mitigate discomfort and prevent injury induced by prolonged exposure to each posture in isolation. This study explored the potential of sit-stand to reduce discomfort and prevent injury, without adversely affecting productivity. Twenty-four participants performed simulated office work in three different conditions sitting, standing and sit-stand. Variables measured included perceived discomfort, L4-L5 joint loading and typing/mousing productivity. Working in a sit-stand paradigm was found to have the potential to reduce discomfort when compared to working in a sitting or standing only configuration. Sit-stand was found to be associated with reduced lumbar flexion during sitting compared to sitting only. Increasing lumbar flexion during prolonged sitting is a known injury mechanism. Therefore, sit-stand exhibited a potentially beneficial response of reduced lumbar flexion that could have the potential to prevent injury. Sit-stand had no significant effect on productivity. Practitioner Summary:
This study has contributed foundational elements to guide usage recommendations for sit-stand workstations. The sit-stand paradigm can reduce discomfort; however, working in a sit-stand ratio of 155 min may not be the most effective ratio. More frequent posture switches may be necessary to realise the full benefit of sit-stand.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Postura
/
Fenômenos Biomecânicos
/
Região Lombossacral
/
Doenças Profissionais
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article