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. 2017 Mar 16:25:8.
doi: 10.1186/s12998-017-0139-x. eCollection 2017.

Lumbar lordosis in prone position and prone hip extension test: comparison between subjects with and without low back pain

Amir Massoud Arab  1 , Arash Haghighat  2 , Zahra Amiri  2 , Fariba Khosravi  2
Affiliations

Lumbar lordosis in prone position and prone hip extension test: comparison between subjects with and without low back pain

Amir Massoud Arab et al. Chiropr Man Therap. .

Abstract

Background: Prone hip extension (PHE) is a common and widely accepted test used for assessment of the lumbo-pelvic movement pattern. Considerable increased in lumbar lordosis during this test has been considered as impairment of movement patterns in lumbo-pelvic region. The purpose of this study was to investigate the change of lumbar lordosis in PHE test in subjects with and without low back pain (LBP).

Method: A two-way mixed design with repeated measurements was used to investigate the lumbar lordosis changes during PHE in two groups of subjects with and without LBP. An equal number of subjects (N = 30) were allocated to each group. A standard flexible ruler was used to measure the size of lumbar lordosis in prone-relaxed position and PHE test in each group.

Result: The result of two-way mixed-design analysis of variance revealed significant health status by position interaction effect for lumbar lordosis (P < 0.001). The main effect of test position on lumbar lordosis was statistically significant (P < 0.001). The lumbar lordosis was significantly greater in the PHE compared to prone-relaxed position in both subjects with and without LBP. The amount of difference in positions was statistically significant between two groups (P < 0.001) and greater change in lumbar lordosis was found in the healthy group compared to the subjects with LBP.

Conclusions: Greater change in lumbar lordosis during this test may be due to more stiffness in lumbopelvic muscles in the individuals with LBP.

Keywords: Flexible ruler; Low back pain; Lumbar lordosis; Movement pattern; Prone hip extension.

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Figures

Fig. 1
Fig. 1
Lumbar lordosis in each position for two groups. PHE Prone hip extension, LBP Low back pain
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