Test–retest reliability for assessment of postural stability using center of pressure spatial patterns of three-dimensional statokinesigrams in young health participants

2014 ◽  
Vol 47 (12) ◽  
pp. 2919-2924 ◽  
Author(s):  
Arthur de Sá Ferreira ◽  
Patrícia Junqueira Ferraz Baracat
Keyword(s):  
Spatial Patterns ◽  
Postural Stability ◽  
Center Of Pressure ◽  
Three Dimensional ◽  
Retest Reliability ◽  
Test Retest Reliability

scholarly journals Test-Retest Reliability of Low-Cost Posturography for Assessing Postural Stability Control Performance during Standing

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Sumet Heamawatanachai ◽  
Witawit Wiriyasakunphan ◽  
Kanokwan Srisupornkornkool ◽  
Chaiyong Jorrakate
Keyword(s):  
Postural Stability ◽  
Center Of Pressure ◽  
Low Cost ◽  
Intraclass Correlation ◽  
Stability Control ◽  
Control Performance ◽  
Cross Sectional ◽  
Stability Tests ◽  
Retest Reliability ◽  
Test Retest Reliability

Postural stability control performance assessment is necessary in providing important information for individuals who are at risk of falling or who have balance impairment. Instrumented assessment is suggested as a valid and reliable test, but the cost and the difficulty of setup are significant limitations. The aim of this cross-sectional (test-retest reliability) study was to develop and determine the reliability of a low-cost posturography for assessing postural stability control performance during standing. The low-cost posturography was developed with four load cells and an acrylic platform. The center of pressure (COP) displacement and velocity were analyzed using written software. Test-retest reliability was performed with six different standing postural stability tests in twenty healthy volunteers on two different days. Intraclass correlation coefficient (ICC), standard error of measurement (SEM), coefficient of variation (CV), and Bland–Altman plot and limits of agreements (LOA) were used for analyses. The low-cost posturography was accurate (ICC = 0.99, p < 0.001 ; SEM = 0.003 cm) when compared to the true with calculated X and Y coordinates, with a moderate to excellent test-retest reliability for both COP displacement (ICCs ranged 0.62–0.91, p < 0.05 ; SEMs ranged 17.92–25.77%) and COP velocity (ICCs ranged 0.62–0.91, p < 0.05 ; SEMs ranged 18.09–27.69%) in all standing postural stability tests. Bland–Altman plots and LOAs suggested good agreement of tested parameters from the developed low-cost posturography between different days. In conclusion, the developed low-cost posturography had adequate reliability for assessing COP displacement and velocity during standing postural control stability performance tests.

Test-Retest Reliability of Center of Pressure Measures for Postural Control Assessment in Older Cardiac Patients

2021 ◽  
Author(s):  
Jeanette Dobberke ◽  
Omar Baritello ◽  
Miralem Hadzic ◽  
Heinz Völler ◽  
Sarah Eichler ◽  
...  
Keyword(s):  
Postural Control ◽  
Center Of Pressure ◽  
Cardiac Patients ◽  
Retest Reliability ◽  
Test Retest Reliability

scholarly journals Test-retest reliability of linear and nonlinear measures of postural stability during visual deprivation in healthy subjects

2017 ◽  
Vol 29 (10) ◽  
pp. 1766-1771 ◽  
Author(s):  
Masoud Ghofrani ◽  
Golamreza Olyaei ◽  
Saeed Talebian ◽  
Hossein Bagheri ◽  
Kazem Malmir
Keyword(s):  
Postural Stability ◽  
Healthy Subjects ◽  
Visual Deprivation ◽  
Retest Reliability ◽  
Linear And Nonlinear ◽  
Test Retest Reliability

scholarly journals 72 Test-Retest Reliability and Minimal Detectable Change for Postural Sway by using Sway Meter in Elderly Subjects

2019 ◽  
Vol 48 (Supplement_4) ◽  
pp. iv18-iv27 ◽  
Author(s):  
Kitima Rongsawad ◽  
Laddawon Worawan ◽  
Karnsiree Jirarojprapa ◽  
Sararat Kaewkham ◽  
Sarawut Khattiwong
Keyword(s):  
Clinical Relevance ◽  
Postural Stability ◽  
Postural Sway ◽  
Intraclass Correlation ◽  
Elderly Subjects ◽  
Minimal Detectable Change ◽  
Detectable Change ◽  
Simple Method ◽  
Retest Reliability ◽  
Test Retest Reliability

Abstract Introduction Static postural stability is the ability to maintain the posture with minimum sway. Increasing postural sway during standing in different sensory conditions is associated with aging due to decline in sensory and motor functions. Sway area measured by using sway meter is usually simple method for assessing postural stability in elderly subjects. Like many biological measurements, sway area has an intrinsic variability that affects their test-retest reliability and responsiveness of postural stability assessment. The minimal detectable change (MDC) is ability to detect smallest change beyond measurement error that reflects a reliable change. Therefore, the MDC value could provide information of clinical relevance on postural stability. The aims of this study were to determine test-retest reliability and MDC of sway area obtained from sway meter in elderly subjects. Methods Twelve healthy elderly subjects aged 60 years and above were participated in this study. The test and retest repeatability of postural sway measurements were performed twice with a 1-hour interval. For each subject was assess postural sway using Lord’s sway meter during standing on 4 sensory conditions for 30 seconds of each condition. The test-retest reliability of sway area was calculated using intraclass correlation coefficient. The MDC for each sway area was calculated to quantify clinical relevance. Results The test-retest reliability of sway area revealed good to excellent reliability ranged from 0.85 to 0.94. Standard error of measurement (SEM) and MDC ranged from 75 to 205 mm2 and 209 to 568 mm2, respectively. Discussion and Conclusion Our findings reveal that sway area in different sensory conditions could be used in assessment of postural stability in elderly subjects. SEM and MDC of sway area increased when subjects were asked to close their eyes and on foam surface. The sway meter is a reliable tool for assessing postural stability in clinical setting.

scholarly journals Test-retest reliability of smile tasks using three-dimensional facial topography

2018 ◽  
Vol 88 (3) ◽  
pp. 319-328 ◽  
Author(s):  
Chihiro Tanikawa ◽  
Kenji Takada
Keyword(s):  
Facial Expression ◽  
Repeated Measures ◽  
Three Dimensional ◽  
Wire Mesh ◽  
Minimal Detectable Change ◽  
Perfect Agreement ◽  
Retest Reliability ◽  
Maximum Effort ◽  
Test Retest Reliability ◽  
Rest Posture

ABSTRACT Objectives: To evaluate the test-retest reliability of three types of facial expression tasks using three-dimensional (3D) facial topography. Materials and Methods: Twelve adult volunteers were enrolled in this study. They were instructed to perform three different facial expression tasks: rest posture, posed smile, and maximum effort smile. Each task was recorded using a 3D image-capturing device on two separate occasions with an interval of 1 week between sessions. The images of two sessions were superimposed based on the forehead. For each participant and for each facial expression, a wire mesh fitting was conducted. This method generated 6,017 points on the wire mesh. Intraindividual reliability between sessions for each task was statistically tested by intraclass correlation coefficients (ICCs) and the 95% confidence interval minimal detectable change (MDC95). Results: The MDC95 for the repeated measures of the rest posture, posed smile, and maximum effort smile exhibited means of 0.8, 1.5, and 1.3 mm, respectively, on the z-axis. The ICCs ranged from substantial to almost perfect agreement for repeated measures for the rest posture and maximum effort smile (0.60 &lt; ICC ≤ 1.00). The right corner of the mouth in the posed smile showed moderate agreement (0.40 &lt; ICC ≤ 0.60). Conclusions: The overall test-retest reliability of the maximum effort smile and rest posture showed substantial to almost perfect agreement, and this was clinically acceptable.

scholarly journals Three-Month Test-Retest Reliability of Center of Pressure Motion During Standing Balance in Individuals with Multiple Sclerosis

2016 ◽  
Vol 18 (2) ◽  
pp. 59-62 ◽  
Author(s):  
Douglas A. Wajda ◽  
Robert W. Motl ◽  
Jacob J. Sosnoff
Keyword(s):  
Multiple Sclerosis ◽  
Center Of Pressure ◽  
Temporal Structure ◽  
Standing Balance ◽  
Retest Reliability ◽  
Eyes Closed ◽  
Prevention Studies ◽  
Eyes Open ◽  
Balance Deficits ◽  
Test Retest Reliability

Background: Balance impairment and an increased rate of falls are commonly reported in individuals with multiple sclerosis (MS). Force platform–generated center of pressure (COP) metrics have previously been recommended as an outcome measure to quantify balance deficits and distinguish between fallers and nonfallers in MS. Information is limited regarding the preservation of postural control in individuals with MS over extended time frames in the absence of an intervention. This report examines the test-retest reliability and magnitude of change of COP motion during standing balance over 3 months. Methods: Twenty individuals with MS and a history of falling underwent testing on two occasions 3 months apart in the absence of an intervention. On both occasions, participants completed two 30-second trials of three conditions: eyes open, eyes closed, and eyes open with concurrent cognitive challenge (dual task). Measures of COP area, velocity, and temporal structure were calculated and included in the reliability analysis. Results: The COP metrics displayed fair-to-excellent reliability over 3 months without an intervention. Reliability was maintained across the three commonly used balance conditions. Conclusions: These results offer insight into the reliability of COP measures over a 3-month period in MS and can inform the use of COP metrics for future study design (eg, sample size estimates) and balance outcome assessment during randomized controlled trials and fall-prevention studies in individuals with MS.

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