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J Phys Ther Sci. 2014 Jan;26(1):87-91. doi: 10.1589/jpts.26.87. Epub 2014 Feb 6.

Thoracic coupled motions of korean men in good health in their 20s.

Author information

  • 1Department of Physical Therapy, Kunjang College University, Republic of Korea.
  • 2Department of Physical Therapy, Yongin University, Republic of Korea.
  • 3Department of Physical Therapy, Namseoul University, Republic of Korea.
  • 4Department of Physical Therapy, Dongnam Health College, Republic of Korea.
  • 5Department of Physical Therapy, International University of Korea, Republic of Korea.
  • 6Department of Physical Therapy, Pohang College, Republic of Korea.
  • 7Department of Physical Therapy, Kyungwoon University, Republic of Korea.
  • 8Department of Physical Therapy, Daegu Science College, Republic of Korea.


[Purpose] The purpose of this study was to investigate thoracic coupled motions of 20 Korean young individuals. [Methods] Thoracic motion of twenty healthy male college students aged 23.2±3.1 was examined. The coupled motions of the thoracic regions T1-4, T4-8, T8-12 were measured using a three dimensional motion capture system. [Results] Coupled axial rotation in the same direction as lateral bending was observed in T1-T4 and T4-T8 in the neutral, flexed, and extended postures of the thoracic spine. In T8-T12, coupled axial rotation in the same direction as lateral bending were observed in the neutral and flexed postures, while coupled axial rotation in the opposite direction was observed in an extended posture. [Conclusion] The patterns of coupled motions in the thoracic spine demonstrated some variability between postures and regions in vivo. However, coupled motions in the same direction were predominantly lateral flexion or axial rotation in the three postures.


Coupled motion; Thoracic spine; Three-dimensional motion capture system

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