title: Test-retest reliability of postural stability on two different foam pads.
abstract: OBJECTIVE
  Foam pads are commonly used devices in the clinics and laboratories to assess postural control. However, no reliability data are presently available to support the use of one type of foam over another. The purpose of this study was to evaluate the test-rest reliability of postural sway parameters while using two different types of foam that are commonly used and to determine which type of foam is optimal for providing a consistent and effective perturbation.
  
  
  METHODS
  Test-retest reliability.
  
  
  METHODS
  Clinical setting.
  
  
  METHODS
  Ten healthy young subjects were recruited.
  
  
  METHODS
  The Balance Accelerometry Measure device was used to collect postural sway for 90 seconds with eyes open and closed on three different surface conditions (firm, Airex foam and Neurocom foam). Intraclass correlation coefficients were used to determine test-retest reliability.
  
  
  RESULTS
  Eyes open and eyes closed on a firm surface showed fair to good reliability for the path length value (ICC (3,1) = 0.61-0.64,p<0.05). Eyes open and eyes closed on the Airex pad showed fair to excellent reliability for the path length value (ICC (3,1) = 0.41-0.81,p>0.05 with eyes open and eyes closed). Eyes open and eyes closed on the Neurocom foam showed fair to good reliability for the path length value (ICC (3,1)= 0.29-0.45,p>0.05).
  
  
  CONCLUSIONS
  The Airex and Neurocom foam pads both provide fair to good reliability. The Airex foam had higher reliability scores with eyes closed than the Neurocom foam pad. Both foam pads appear to produce repeatable findings.
authors.affiliation: University of Pittsburgh, Department of Physical Therapy, Pittsburgh, PA, USA ; East Carolina University, Department of Physical Therapy, Greenville, NC, USA.
authors.forename: Chia-Cheng
authors.initials: CC
authors.lastname: Lin
authors.affiliation: University of Pittsburgh, Department of Bioengineering, Pittsburgh, PA, USA.
authors.forename: Jennica L
authors.initials: JL
authors.lastname: Roche
authors.affiliation: University of Pittsburgh, Department of Bioengineering, Pittsburgh, PA, USA.
authors.forename: Daniel P
authors.initials: DP
authors.lastname: Steed
authors.affiliation: Crossroads Consulting, LLC, Johnstown, PA, USA.
authors.forename: Mark C
authors.initials: MC
authors.lastname: Musolino
authors.affiliation: Duquesne University, Department of Physical Therapy, Pittsburgh, PA, USA.
authors.forename: Greg F
authors.initials: GF
authors.lastname: Marchetti
authors.affiliation: University of Pittsburgh, College of Arts and Sciences, Pittsburgh, PA, USA.
authors.forename: Gabriel R
authors.initials: GR
authors.lastname: Furman
authors.affiliation: University of Pittsburgh, Department of Bioengineering, Pittsburgh, PA, USA.
authors.forename: Mark S
authors.initials: MS
authors.lastname: Redfern
authors.affiliation: University of Pittsburgh, Department of Physical Therapy, Pittsburgh, PA, USA.
authors.forename: Susan L
authors.initials: SL
authors.lastname: Whitney
keywords: Accelerometry; Foam; ICC; Postural sway; Test-retest reliability
references.citation: Arch Phys Med Rehabil. 2003 Jan;84(1):90-5
references.pmid: 12589627
references.citation: Gait Posture. 2008 Nov;28(4):649-56
references.pmid: 18602829
references.citation: J Gerontol. 1991 Nov;46(6):B238-44
references.pmid: 1940075
references.citation: Crit Rev Biomed Eng. 1991;18(6):413-37
references.pmid: 1855384
references.citation: J Biomech. 1987;20(4):423-7
references.pmid: 3597457
references.citation: J Physiol. 1993 Sep;469:479-99
references.pmid: 8271209
references.citation: Age Ageing. 1990 May;19(3):215-21
references.pmid: 2363386
references.citation: Exp Brain Res. 1990;82(1):167-77
references.pmid: 2257901
references.citation: J Vestib Res. 1992 Winter;2(4):349-56
references.pmid: 1342407
references.citation: Phys Ther. 1986 Oct;66(10):1548-50
references.pmid: 3763708
references.citation: Eur J Appl Physiol. 2007 Sep;101(1):81-9
references.pmid: 17503068
references.citation: Gait Posture. 2011 Apr;33(4):594-9
references.pmid: 21333541
references.citation: Acta Otolaryngol. 1989 May-Jun;107(5-6):338-45
references.pmid: 2787950
references.citation: J Orthop Res. 1988;6(6):833-9
references.pmid: 3171763
references.citation: J Strength Cond Res. 2012 Feb;26(2):568-74
references.pmid: 22067238
references.citation: Age Ageing. 2009 May;38(3):308-13
references.pmid: 19252205
references.citation: Exp Brain Res. 1979 Aug 1;36(3):463-76
references.pmid: 477777
references.citation: Clin Rehabil. 2011 Nov;25(11):1011-20
references.pmid: 21504952
references.citation: Exp Brain Res. 1998 Sep;122(2):185-95
references.pmid: 9776517
references.citation: J Neurophysiol. 1986 Jun;55(6):1369-81
references.pmid: 3734861
references.citation: Exp Brain Res. 1997 Mar;114(1):163-9
references.pmid: 9125462
references.citation: J Sport Rehabil. 2007 Nov;16(4):363-72
references.pmid: 18246902
references.citation: Otolaryngol Head Neck Surg. 1995 Jan;112(1):8-15
references.pmid: 7816461
references.citation: J Strength Cond Res. 2005 Feb;19(1):231-40
references.pmid: 15705040