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Agreement between test procedures for the single-leg hop for distance and the single-leg mini squat as measures of lower extremity function

Ageberg, Eva LU and Cronström, Anna LU (2018) In BMC Sports Science, Medicine and Rehabilitation 10(15).
Abstract

Background: Different test procedures are often used within performance-based measures, causing uncertainty as to whether results can be compared between studies. Thus, the aim of this study was to assess agreement between different test procedures for the single-leg hop for distance (SLHD) and the single-leg mini squat (SLMS), respectively, two commonly used tasks for assessing deficiency in lower extremity muscle function.

Methods: Twenty-three participants (20-42 years) with lower extremity injury performed the SLHD with arms free and with arms behind back, and the Limb Symmetry Index (LSI; injured leg divided by uninjured and multiplied by 100) was calculated. Another group of 28 participants (mean 18-38 years) performed five... (More)

Background: Different test procedures are often used within performance-based measures, causing uncertainty as to whether results can be compared between studies. Thus, the aim of this study was to assess agreement between different test procedures for the single-leg hop for distance (SLHD) and the single-leg mini squat (SLMS), respectively, two commonly used tasks for assessing deficiency in lower extremity muscle function.

Methods: Twenty-three participants (20-42 years) with lower extremity injury performed the SLHD with arms free and with arms behind back, and the Limb Symmetry Index (LSI; injured leg divided by uninjured and multiplied by 100) was calculated. Another group of 28 participants (mean 18-38 years) performed five SLMSs at a pre-defined speed and maximum number of SLMSs during 30 seconds, and were visually observed and scored as either having a knee-over-foot or a knee-medial-to-foot position (KMFP).

Results: No systematic difference between test procedures for the LSI of the SLHD was noted (p=0.736), Cohen's kappa = 0.42. The Bland & Altman plot showed wide limits of agreement between test procedures, with particularly poor agreement for participants with abnormal LSI (<90%). Ten participants were scored as having a KMFP during five SLMSs at a predefined speed, while five had a KMFP during maximum number of SLMSs during 30 seconds (p=0.063, Cohen's kappa = 0.56).

Conclusions: The moderate agreement between the two test procedures for the SLHD and the SLMS, respectively, indicate that results from these different test procedures should not be compared across studies. SLHD with arms behind back, and five SLMSs at a pre-defined speed, respectively, were the most sensitive procedures to detect individuals with poor functional performance.

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Contribution to journal
publication status
published
subject
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BMC Sports Science, Medicine and Rehabilitation
volume
10
issue
15
article number
15
publisher
BioMed Central (BMC)
external identifiers
  • scopus:85065608679
  • pmid:30167308
ISSN
2052-1847
DOI
10.1186/s13102-018-0104-6
language
English
LU publication?
yes
id
6e2a0415-36b4-4274-8c27-7590f610b3ee
date added to LUP
2019-05-15 19:44:47
date last changed
2021-04-06 04:41:35
@article{6e2a0415-36b4-4274-8c27-7590f610b3ee,
  abstract     = {<p>Background: Different test procedures are often used within performance-based measures, causing uncertainty as to whether results can be compared between studies. Thus, the aim of this study was to assess agreement between different test procedures for the single-leg hop for distance (SLHD) and the single-leg mini squat (SLMS), respectively, two commonly used tasks for assessing deficiency in lower extremity muscle function.</p><p>Methods: Twenty-three participants (20-42 years) with lower extremity injury performed the SLHD with arms free and with arms behind back, and the Limb Symmetry Index (LSI; injured leg divided by uninjured and multiplied by 100) was calculated. Another group of 28 participants (mean 18-38 years) performed five SLMSs at a pre-defined speed and maximum number of SLMSs during 30 seconds, and were visually observed and scored as either having a knee-over-foot or a knee-medial-to-foot position (KMFP).</p><p>Results: No systematic difference between test procedures for the LSI of the SLHD was noted (p=0.736), Cohen's kappa = 0.42. The Bland &amp; Altman plot showed wide limits of agreement between test procedures, with particularly poor agreement for participants with abnormal LSI (&lt;90%). Ten participants were scored as having a KMFP during five SLMSs at a predefined speed, while five had a KMFP during maximum number of SLMSs during 30 seconds (p=0.063, Cohen's kappa = 0.56).</p><p>Conclusions: The moderate agreement between the two test procedures for the SLHD and the SLMS, respectively, indicate that results from these different test procedures should not be compared across studies. SLHD with arms behind back, and five SLMSs at a pre-defined speed, respectively, were the most sensitive procedures to detect individuals with poor functional performance.</p>},
  author       = {Ageberg, Eva and Cronström, Anna},
  issn         = {2052-1847},
  language     = {eng},
  month        = {08},
  number       = {15},
  publisher    = {BioMed Central (BMC)},
  series       = {BMC Sports Science, Medicine and Rehabilitation},
  title        = {Agreement between test procedures for the single-leg hop for distance and the single-leg mini squat as measures of lower extremity function},
  url          = {http://dx.doi.org/10.1186/s13102-018-0104-6},
  doi          = {10.1186/s13102-018-0104-6},
  volume       = {10},
  year         = {2018},
}