Effect of Textured insole on the complexity of center of pressure sway in faller older adults

Document Type : Original article

Authors

1 1. Student Research Committee, MSc Student of Occupational Therapy, Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

2 2. PhD Student of Occupational Therapy, Lecturer of Occupational Therapy Department, Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

3 3. PhD student of Neurosciences, Lecturer of Occupational Therapy Department, Faculty of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran

4 4. PhD student of Neurosciences, Faculty of advanced Technologies in medicine, Tehran University of Medical Sciences, Tehran, Iran, Hajar

5 5. Occupational Therapy Department, Faculty of Rehabilitation Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Abstract

Background and Aim: Aging is associated with reduction in the complexity of biological systems such as postural control system. Somatosensory system plays an important role in the complexity of the postural control system which its inputs reliability is reduced with age. Therefore, the interventions that improve complexity of postural control system by increasing sensory input can improve balance performance and reduce risk of falling.
Materials and Methods: In this study 8 faller older adults with the average age of 66.25 (±3.53) years were selected by simple non-probability sampling method. The complexity of the center of pressure (COP) sway was measured by approximate entropy in medial-lateral and anterior-posterior directions in different conditions: using textured insole [with and without textured insole] with open and closed eyes.
Results: Textured insole significantly improved medial-lateral approximate entropy values in faller older adults. The post-hoc analysis of medial-lateral approximate entropy of different postural conditions showed the approximate entropy in eyes closed with textured insole condition increased significantly compared with  eyes closed without textured insole condition (p=0.004). This parameter also increased significantly (p=0.001) in eyes closed with textured insole condition compared with eyes open without textured insole condition.
Conclusion: Since textured insole increased complexity of postural sway, it can be used as an intervention which may reduce the risk of falling in older adults with a history of falling.

Keywords


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Volume 4, Issue 2 - Serial Number 2
July and August 2015
Pages 29-36
  • Receive Date: 08 July 2014
  • Revise Date: 25 September 2014
  • Accept Date: 09 February 2015
  • First Publish Date: 22 June 2015