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http://dx.doi.org/10.5103/KJSB.2013.23.4.369

Kinematic Analysis of Dynamic Stability Toward the Pelvis-spine Distortion during Running  

Park, Gu-Tae (Department of Physical Education, College of Arts and Physical Education, Incheon National University)
Yoo, Kyoung-Seok (Department of Sports and Leisure Studies, School of Arts and Physical Education, Chodang University)
Publication Information
Korean Journal of Applied Biomechanics / v.23, no.4, 2013 , pp. 369-376 More about this Journal
Abstract
The purposes of this study were to assess dynamic stability toward pelvis-spine column distortion during running and to compare the typical three-dimensional angular kinematics of the trunk motion; cervical, thoracic, lumbar segment spine and the pelvis from the multi-segmental spine model between exercise group and non-exercise group. Subjects were recruited as exercise healthy women on regular basis (group A, n=10) and non-exercise idiopathic scoliosis women (group B, n=10). Data was collected by using a vicon motion capture system (MX-T40, UK). The pelvis, spine segments column and lower limbs analysiaed through the 3D kinematic angular ROM pattern. There were significant differences in the time-space variables, the rotation motion of knee joint in lower limbs and the pelvis variables; obliquity in side bending, inter/outer rotation in twisting during running leg movement. There were significant differences in the spinal column that is lower-lumbar, upper-lumbar, upper-thoracic, mid-upper thoracic, mid-lower thoracic, lower thoracic and cervical spine at inclination, lateral bending and twist rotation between group A and group B (<.05, <.01 and <.001). As a results, group B had more restrictive motion than group A in the spinal column and leg movement behaved like a 'shock absorber". And the number of asymmetry index (AI) showed that group B was much lager unbalance than group A. In conclusion, non-exercise group was known to much more influence the dynamic stability of equilibrium for bilateral balance. These finding suggested that dynamic stability aimed at increasing balance of the trunk ROM must involve methods and strategies intended to reduce left/right asymmetry and the exercise injury.
Keywords
Running; Pelvis-spine; Dynamic Stability; Balance;
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