The Effect of Somatosensory Cue on Postural Stability in Blinded Persons

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00650676
Recruitment Status : Completed
First Posted : April 2, 2008
Last Update Posted : September 21, 2010
Information provided by:
Soroka University Medical Center

Brief Summary:
Blind Adults that willing to participate in the study will be tested with well-established measuring techniques of Balance control using force plate in the movement and Rehabilitation Laboratory at Ben-Gurion University. An automated algorithm will be used to extract standardized stabilogram-diffusion parameters from each of the COP data sets collected during quiet standing. These parameters include diffusion coefficients, critical displacement, critical time and scaling exponents for both lateral and anterior-posterior sway directions (Collins & De Luca, 1993). the subjects will be tested in 3 task conditions (eyes blindfolded, eyes blindfolded holding stick, eyes blindfolded holding a dog). Participants will be required to stand on the platform 10 times for 30 s For each trial, they will be instructed to sway as little as possible.

Condition or disease
Visual Impairment

Study Type : Observational
Estimated Enrollment : 60 participants
Observational Model: Case Control
Time Perspective: Cross-Sectional
Official Title: The Effect of Somatosensory Cue on Postural Stability in Blinded Persons
Study Start Date : January 2008
Actual Primary Completion Date : March 2009
Actual Study Completion Date : June 2010


Primary Outcome Measures :
  1. SDF parameters [ Time Frame: baseline ]

Information from the National Library of Medicine

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Ages Eligible for Study:   20 Years to 70 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population
30 blind persons and 30 control

Inclusion Criteria:

  • Blind persons
  • Able to stand safely for 30 seconds
  • Able to walk independently
  • Hip OA prior THA

Exclusion Criteria:

  • Stroke or other neurological diseases
  • Orthopedic surgery at the past year

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00650676

Soroka University Medical Center
Beer-Sheva, Israel
Sponsors and Collaborators
Soroka University Medical Center
Principal Investigator: Itshak Melzer, PhD Ben-gurion University of the Negev, Beer-Sheva, Israel
Study Chair: Ronit Yagev, MD Soroka University Medical Centar

Responsible Party: Itshak Melzer PhD, PT, Ben-Gurion University of the Negev Identifier: NCT00650676     History of Changes
Other Study ID Numbers: sor464308ctil
First Posted: April 2, 2008    Key Record Dates
Last Update Posted: September 21, 2010
Last Verified: September 2010

Additional relevant MeSH terms:
Vision Disorders
Vision, Low
Sensation Disorders
Neurologic Manifestations
Nervous System Diseases
Eye Diseases
Signs and Symptoms