[논문]Research the Effects of Thoracic and Lumbar Support Fixtures on Forward Head Posture during Visual Display Terminal Work

Kim, Yeoung-Sung; Park, Han-Kyu; Park, Min-Chull

doi:10.13066/kspm.2016.11.3.41

Research the Effects of Thoracic and Lumbar Support Fixtures on Forward Head Posture during Visual Display Terminal Work 원문보기

대한물리의학회지 = Journal of the korean society of physical medicine, v.11 no.3, 2016년, pp.41 - 47

Kim, Yeoung-Sung (Department of Physical Therapy, Graduate School, Catholic University of Pusan) , Park, Han-Kyu (Department of Physical Therapy, Graduate School, Daegu University) , Park, Min-Chull (Department of Physical Therapy, College of Health Sciences, Catholic University of Pusan)

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PURPOSE: Forward head posture (FHP) is one of the most common postural problems among white-collar workers who perform highly repetitive tasks in the same position. The aim of this study was to research the effects of thoracic and lumbar support fixtures on forward head posture (FHP) during visual display terminal (VDT) work. METHODS: The subjects were 36 healthy male students with no problems in their medical history or respiratory systems. The subjects were randomly assigned to three groups: control group (n=12), thoracic support fixtures (n=12), and lumbar support fixtures (n=12). We conducted a text typing task of the same content for 20 minutes, and evaluated the angles, including the craniovertebra angle (CVA), craniorotation angle (CRA) with photogrammetry. RESULTS: The thoracic and lumbar support fixture groups showed a statistically significant difference at the CVA and CRA to the control group (p.05). CONCLUSION: We determined that VDT work using thoracic and lumbar support fixtures has a positive effect on forward head posture in white-collar workers. Further studies are required to find the more effective location of support fixtures.

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문제 정의

Therefore, this study explores the effects of applying thoracic and lumbar support fixtures on movement of the head and neck during visual display terminal (VDT) work in a sitting posture. The study also investigates the necessary positioning of the support fixtures to prevent FHP.
Therefore, this study explores the effects of applying thoracic and lumbar support fixtures on movement of the head and neck during visual display terminal (VDT) work in a sitting posture. The study also investigates the necessary positioning of the support fixtures to prevent FHP.
This study attempted to explore the effects on FHP of applying thoracic and lumbar support fixtures. The research obtained the following results.
This study was conducted to research on the effects of thoracic and lumbar support fixtures on FHP during VDT work. The thoracic and lumbar support fixtures group and control group executed VDT takes for twenty minutes.

제안 방법

The students were divided into three groups of 12 persons each: a group with the lumbar support fixture, another group with the thoracic support fixture, and the final group with no support fixture. The method of this study was based on Ministry of Labor Notification for VDT Management.

대상 데이터

1). The selected support fixtures were 39cm wide, 32cm long and 8cm thick, were made of air-mesh and high elastic urethane materials (Fig. 2). To enhance the reliability of the measurements, different colored pointers were attached at each position when measuring the angles (Chae, 2002).
This study consisted of 36 healthy students in their 20s living in Pusan. The purpose and method of the study were explained to the participants, and all agreed to take part in the experiment voluntarily.

이론/모형

The students were divided into three groups of 12 persons each: a group with the lumbar support fixture, another group with the thoracic support fixture, and the final group with no support fixture. The method of this study was based on Ministry of Labor Notification for VDT Management. To take account of physical differences in the subjects, height adjustable desks and chairs were used.

성능/효과

The research obtained the following results. Targeting ordinary persons, the observation showed that after 20 minutes of a computer task, there was a 9.1 degree decrease of CVA and a 3.8 degree increase of CRA in the group with no support fixture. In the group with the thoracic support fixture, there was a 4.
In addition, the lumbar support prevented forward head posture as it affected the upper and lower cervical spines by creating an appropriate lordosis tilt angle of the pelvis (Ko, 2011). Therefore, even though there was no significant difference in this research, the decrease in the average change of CRA when applying the thoracic support fixture had relatively more effect on the thoracic alignment in decreasing the extension of the upper cervical spine. On the other hand, the decrease in the average change of CVA had a relatively greater effect on the decrease of flexion of the lower cervical spine (Goda, 2015).

후속연구

However, there were limitations to observe differences between the thoracic support and the lumbar support within twenty minutes. In further studies, it will be necessary to conduct in-depth research on the effects of a thoracic support fixture on the overall alignment of the spine as well as to analyze the difference between the thoracic and the lumbar support fixtures in targeting subjects with FHP. Also, for a more precise assessment, it will be necessary to classify the sizes of support fixtures based on the curves, using an electromyography (EMG) and X-ray tests to apply to different segments of the spine

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Research the Effects of Thoracic and Lumbar Support Fixtures on Forward Head Posture during Visual Display Terminal Work 원문보기

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Research the Effects of Thoracic and Lumbar Support Fixtures on Forward Head Posture during Visual Display Terminal Work 원문보기

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