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Title: The association between back pain and trunk posture of workers in a special school for the severe handicaps
Authors: Wong, KCH
Lee, YWR
Yeung, SMS 
Issue Date: 29-Apr-2009
Source: BMC musculoskeletal disorders, 29 Apr. 2009, v. 10, 43
Abstract: Background: The present study aims to determine the time spent in different static trunk postures during a typical working day of workers in a special school for the severe handicaps.
Methods: Eighteen workers with low back pain (LBP) and fifteen asymptomatic workers were recruited. A cross-sectional design was employed to study the time spent in different static trunk postures which was recorded by a biaxial accelerometer attached to the T12 level of the back of the subjects.
Results: The results of ANCOVA revealed that subjects with LBP spent significantly longer percentage of time in static trunk posture when compared to normal (p < 0.05). It was also shown that they spent significantly longer time in trunk flexion for more than 10° (p < 0.0125).
Conclusion: An innovative method has been developed for continuous tracking of spinal posture, and this has potential for widespread applications in the workplace. The findings of the present investigation suggest that teachers in special schools are at increased risk of getting LBP. In order to minimise such risk, frequent postural change and awareness of work posture are recommended.
Publisher: BioMed Central
Journal: BMC musculoskeletal disorders 
EISSN: 1471-2474
DOI: 10.1186/1471-2474-10-43
Rights: © 2009 Wong et al; licensee BioMed Central Ltd.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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