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Test-retest reliability of knee kinesthesia in healthy adults

Ageberg, Eva LU ; Flenhagen, Johan and Ljung, Jonatan (2007) In BMC Musculoskeletal Disorders 8(57).
Abstract
Background



Sensory information from mechanoreceptors in the skin, muscles, tendons, and joint structures plays an important role in joint stability. A joint injury can lead to disruption of the sensory system, which can be measured by proprioceptive acuity. When evaluating proprioception, assessment tools need to be reliable. The aim of this study was to assess the test-retest reliability of a device designed to measure knee proprioception.

Methods



Twenty-four uninjured individuals (14 women and 10 men) were examined with regard to test-retest reliability of knee kinesthesia, measured by the threshold to detection of passive motion (TDPM). Measurements were performed towards extension and... (More)
Background



Sensory information from mechanoreceptors in the skin, muscles, tendons, and joint structures plays an important role in joint stability. A joint injury can lead to disruption of the sensory system, which can be measured by proprioceptive acuity. When evaluating proprioception, assessment tools need to be reliable. The aim of this study was to assess the test-retest reliability of a device designed to measure knee proprioception.

Methods



Twenty-four uninjured individuals (14 women and 10 men) were examined with regard to test-retest reliability of knee kinesthesia, measured by the threshold to detection of passive motion (TDPM). Measurements were performed towards extension and flexion from the two starting positions, 20 degrees and 40 degrees knee joint flexion, giving four variables. The mean difference between test and retest together with the 95% confidence interval (test 2 minus test 1), the intraclass correlation coefficient (ICC2,1), and Bland and Altman graphs with limits of agreement, were used as statistical methods for assessing test-retest reliability.

Results



The intraclass correlation coefficients ranged from 0.59 to 0.70 in all variables except one. No difference was found between test and retest in three of the four TDPM variables. TDPM would need to decrease between 10% and 38%, and increase between 17% and 24% in groups of uninjured subjects to be 95% confident of detecting a real change. The limits of agreement were rather wide in all variables. The variables associated with the 20-degree starting position tended to have higher intraclass correlation coefficients and narrower limits of agreement than those associated with 40 degrees.

Conclusion



Three TDPM variables were considered reliable for observing change in groups of subjects without pathology. However, the limits of agreement revealed that small changes in an individual's performance cannot be detected. The higher intraclass correlation coefficients and the narrower limits of agreement in the variables associated with the starting position of 20 degrees knee joint flexion, indicate that these variables are more reliable than those associated with 40 degrees. We, therefore, recommend that the TDPM be measured with a 20-degree starting position. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Test-retest, knee, kinesthesia
in
BMC Musculoskeletal Disorders
volume
8
issue
57
publisher
BioMed Central
external identifiers
  • wos:000248475400001
  • scopus:34547625736
ISSN
1471-2474
DOI
10.1186/1471-2474-8-57
language
English
LU publication?
yes
id
cf500858-5c51-4be5-92ea-9cf043427d8d (old id 541065)
date added to LUP
2007-10-10 21:00:19
date last changed
2017-03-05 04:06:44
@article{cf500858-5c51-4be5-92ea-9cf043427d8d,
  abstract     = {Background<br/><br>
<br/><br>
Sensory information from mechanoreceptors in the skin, muscles, tendons, and joint structures plays an important role in joint stability. A joint injury can lead to disruption of the sensory system, which can be measured by proprioceptive acuity. When evaluating proprioception, assessment tools need to be reliable. The aim of this study was to assess the test-retest reliability of a device designed to measure knee proprioception.<br/><br>
Methods<br/><br>
<br/><br>
Twenty-four uninjured individuals (14 women and 10 men) were examined with regard to test-retest reliability of knee kinesthesia, measured by the threshold to detection of passive motion (TDPM). Measurements were performed towards extension and flexion from the two starting positions, 20 degrees and 40 degrees knee joint flexion, giving four variables. The mean difference between test and retest together with the 95% confidence interval (test 2 minus test 1), the intraclass correlation coefficient (ICC2,1), and Bland and Altman graphs with limits of agreement, were used as statistical methods for assessing test-retest reliability.<br/><br>
Results<br/><br>
<br/><br>
The intraclass correlation coefficients ranged from 0.59 to 0.70 in all variables except one. No difference was found between test and retest in three of the four TDPM variables. TDPM would need to decrease between 10% and 38%, and increase between 17% and 24% in groups of uninjured subjects to be 95% confident of detecting a real change. The limits of agreement were rather wide in all variables. The variables associated with the 20-degree starting position tended to have higher intraclass correlation coefficients and narrower limits of agreement than those associated with 40 degrees.<br/><br>
Conclusion<br/><br>
<br/><br>
Three TDPM variables were considered reliable for observing change in groups of subjects without pathology. However, the limits of agreement revealed that small changes in an individual's performance cannot be detected. The higher intraclass correlation coefficients and the narrower limits of agreement in the variables associated with the starting position of 20 degrees knee joint flexion, indicate that these variables are more reliable than those associated with 40 degrees. We, therefore, recommend that the TDPM be measured with a 20-degree starting position.},
  author       = {Ageberg, Eva and Flenhagen, Johan and Ljung, Jonatan},
  issn         = {1471-2474},
  keyword      = {Test-retest,knee,kinesthesia},
  language     = {eng},
  number       = {57},
  publisher    = {BioMed Central},
  series       = {BMC Musculoskeletal Disorders},
  title        = {Test-retest reliability of knee kinesthesia in healthy adults},
  url          = {http://dx.doi.org/10.1186/1471-2474-8-57},
  volume       = {8},
  year         = {2007},
}