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- Title
The effect of overcommitment and reward on muscle activity, posture, and forces in the arm-wrist-hand region - a field study among computer workers.
- Authors
HW Eijckelhof, Belinda; L Bruno Garza, Jennifer; A Huysmans, Maaike; M Blatter, Birgitte; W Johnson, Peter; H van Dieen, Jaap; J van der Beek, Allard; T Dennerlein, Jack
- Abstract
Eijckelhof BHW, Bruno Garza JL, Huysmans MA, Blatter BM, Johnson PW, van Dieen JH, van der Beek AJ, Dennerlein JT. The effect of overcommitment and reward on muscle activity, posture, and forces in the arm-wrist-hand region - a field study among computer workers. Scand J Work Environ Health. 2013;39(4):379-389. dol:10.5271/sjweh.3346 Objective Office workers with high levels of overcommitment and low levels of reward are thought to be more prone to arm-wrist-hand symptoms, possibly through a higher internal physical exposure. The aim of this study was to examine the effects of high overcommitment and low reward on (i) forearm muscle activity, (ii) wrist posture and kinematics, and (iii) forces applied to computer input devices during computer work in an actual work setting. Methods We continuously measured wrist extensor muscle activity, wrist posture and kinematics, and forces applied to the keyboard and mouse for two hours during the daily work of 120 office workers with four different levels of overcommitment and reward (low-high, high-high, low-low, and high-low). Results Wrist velocities and accelerations in radial-ulnar direction were higher for workers with high com-pared to low overcommitment, while their wrist range of motion was similar, possibly indicating a higher work pace. Wrist extensor muscle activity and forces applied to the keyboard and mouse were not increased by high overcommitment and/or low reward. Conclusion Overall, our findings provide little support for the proposed pathway of high overcommitment and low reward in the development of arm-wrist-hand symptoms through a higher internal physical exposure.o
- Subjects
POSTURE; ERGONOMICS; INDUSTRIAL hygiene; BIOMECHANICS; HUMAN kinematics; REWARD (Psychology)
- Publication
Scandinavian Journal of Work, Environment & Health, 2013, Vol 39, Issue 4, p379
- ISSN
0355-3140
- Publication type
Article
- DOI
10.5271/sjweh.3346