Analysis of sensory system aspects of postural stability during quiet standing in adolescent idiopathic scoliosis patients

Taeyong Sim, Hakje Yoo, Dongjun Lee, Seung Woo Suh, Jae Hyuk Yang, Hyunggun Kim, Joung Hwan Mun

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


Background: The aim of this study was to quantitatively analyze quite standing postural stability of adolescent idiopathic scoliosis (AIS) patients in respect to three sensory systems (visual, vestibular, and somatosensory). Method: In this study, we analyzed the anterior-posterior center of pressure (CoP) signal using discrete wavelet transform (DWT) between AIS patients (n = 32) and normal controls (n = 25) during quiet standing. Result: The energy rate (E EYE %) of the CoP signal was significantly higher in the AIS group than that in the control group at levels corresponding to vestibular and somatosensory systems (p < 0.01). Conclusions: This implies that AIS patients use strategies to compensate for possible head position changes and spinal asymmetry caused by morphological deformations of the spine through vestibular and somatosensory systems. This could be interpreted that such compensation could help them maintain postural stability during quiet standing. The interpretation of CoP signal during quiet standing in AIS patients will improve our understanding of changes in physical exercise ability due to morphological deformity of the spine. This result is useful for evaluating postural stability before and after treatments (spinal fusion, bracing, rehabilitation, and so on).

Original languageEnglish
Article number54
JournalJournal of NeuroEngineering and Rehabilitation
Issue number1
Publication statusPublished - 2018 Jun 22

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP; No. NRF-2016R1A2B3009013).

Publisher Copyright:
© 2018 The Author(s).


  • Adolescent idiopathic scoliosis (AIS)
  • Balance
  • Discrete wavelet transform (DWT)
  • Postural stability
  • Sensory system
  • Somatosensory
  • Vestibular
  • Visual

ASJC Scopus subject areas

  • Rehabilitation
  • Health Informatics


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