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Journal of Medical and Biological Engineering

, Volume 38, Issue 4, pp 534–543 | Cite as

Control of the Motions of the Body’s Center of Mass and End-Points of the Lower Limbs in Patients with Mild Parkinson’s Disease During Obstacle-Crossing

  • Yen-Hung Liu
  • Mei-Ying Kuo
  • Ruey-Meei Wu
  • Zhi-You Chen
  • Tung-Wu LuEmail author
Original Article
  • 76 Downloads

Abstract

Neuromuscular impairments in Parkinson’s disease (PD) alter the mechanics and control of the body, leading to an increased risk of falling during more challenging functional tasks such as obstacle-crossing. However, little is known about these changes. The current study aimed to bridge the gap by quantifying the motion of the body’s center of mass (COM) relative to the center of pressure (COP) in terms of COM-COP inclination angles (IA) and their rate of change (RCIA) in fifteen older adults with mild PD and fifteen healthy controls when crossing obstacles of heights of 10, 20 and 30% leg length. There were no between-group differences for either the leading or trailing toe clearances (p > 0.05). With the unaffected limb leading, the PD subjects significantly increased the crossing sagittal and frontal IA, crossing sagittal RCIA, the peak RCIA, and average sagittal and frontal RCIAs during double-limb support for all obstacle heights when compared to those with the affected limb leading and those of the Controls (p < 0.05). The poor balance control in the mediolateral direction during obstacle-crossing in PD indicated an increased risk of falling. The differences in the crossing patterns between leading with the affected or unaffected limb suggest that patients with PD should lead with the affected limb when crossing obstacles. The current findings suggest that early dynamic balance training is important in the management of patients with PD.

Keywords

Parkinson’s disease Obstacle-crossing Balance Gait analysis 

Notes

Acknowledgements

The authors are grateful for the financial support from the National Science Council, Taiwan (NSC 98-2320-B-002-005-MY3). The assistance in data collection provided by Drs Chu-Fen Chang and Sheng-Chang Chen is also greatly appreciated.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Taiwanese Society of Biomedical Engineering 2017

Authors and Affiliations

  • Yen-Hung Liu
    • 1
    • 2
  • Mei-Ying Kuo
    • 3
  • Ruey-Meei Wu
    • 4
  • Zhi-You Chen
    • 1
  • Tung-Wu Lu
    • 1
    • 5
    Email author
  1. 1.Institute of Biomedical EngineeringNational Taiwan UniversityTaipeiTaiwan, ROC
  2. 2.Department of Physical TherapyTzu-Hui Institute of TechnologyPingtungTaiwan, ROC
  3. 3.Department of Physical TherapyChina Medical UniversityTaichungTaiwan, ROC
  4. 4.Department of NeurologyNational Taiwan University HospitalTaipeiTaiwan, ROC
  5. 5.Department of Orthopaedic Surgery, School of MedicineNational Taiwan UniversityTaipeiTaiwan, ROC

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