Publication: Straight Leg Raise Test: Influence of Lumbosant© and
Assistant Examiner in Hip, Pelvis Tilt and
Lumbar Lordosis
Authors
Santonja Renedo, Sara ; Ferrer, Vicente ; Pastor, Antonio ; Collazo Diéguez, Mónica ; Rodríguez Ferrán, Olga ; Andújar, Pilar ; Ayala Rodríguez, Francisco ; Santonja Medina, Fernando ; Cejudo Palomo, Antonio ; Sainz de Baranda Andújar, Pilar
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Publisher
MDPI
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DOI
https://doi.org/10.3390/sym12060927
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info:eu-repo/semantics/article
Description
© 2020 by the authors. This manuscript version is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by/4.0/
This document is the Published Manuscript version of a Published Work that appeared in final form in Symmetry. To access the final edited and published work see https://doi.org/10.3390/sym12060927
Abstract
The passive straight leg raise (PSLR) test is widely used to assess hamstring extensibility.
However, to accurately measure hamstring extensibility throughout PSLR, appropriate stabilization
of the pelvis must be provided in order to minimize the possible influence of any compensatory
movement in the scores reached. The main purpose of this study was to demonstrate the degree of
influence of the Lumbosant© and an assistant examiner in hamstring extensibility in healthy young
adults. A secondary objective was to verify the variability of the posterior pelvic tilt movement.
Hamstring muscle extensibility was measured using the traditional (only an examiner) and new (using
a low-back protection support Lumbosant© and two trained [principal and assistant] examiners)
PSLR procedures. Correlation coefficients were expressed using r values, accompanying descriptors
and 90% confidence intervals. Variance explained was expressed via the R2
statistic. To examine
possible differences, the Mann-Whitney U-test was conducted. Additionally, Cohen’s d was calculated
for all results, and the magnitudes of the effect were interpreted and statistical significance set at
p < 0.05. A stepwise multiple regression analysis was performed to examine the relationship between
scores and values. The final score that was determined with the new PSLR is significantly lower
(13◦ approximately) than the one obtained through the traditional procedure (75.3 ± 14.4◦ vs. 89.2 ± 20.8◦
;
d = −0.777 [moderate]). The data presented in this study suggest that the PSLR may overestimate
hamstring extensibility unless lumbopelvic movement is controlled. Therefore, we recommend the
use of Lumbosant© and an auxiliary examiner to obtain more accurate hamstring extensibility scores.
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Citation
Symmetry, 2020, Vol. 12, Issue 6 : 927
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