The immediate effect of unilateral lumbar Z-joint mobilisation on posterior chain neurodynamics: A randomised controlled study

Division of Physiotherapy, Faculty of Health Science & Medicine, Bond University, Gold Coast, QLD 4229, Australia.
Manual therapy (Impact Factor: 1.71). 07/2011; 16(6):609-13. DOI: 10.1016/j.math.2011.06.004
Source: PubMed


Hamstring strain (HS) is a common musculoskeletal condition and abnormal neurodynamics has been shown to influence HS and delay recovery. The efficacy of stretching for preventing and treating HS remains uncertain despite extensive research and wide-spread use. The effects of cervical spine mobilisation on peripheral nervous system function, neurodynamics and muscle force in the upper limb have been reported. Very few studies have reported effects of lumbar spine mobilisation on these variables in the lower limb. This study aimed to determine immediate effects of either a unilateral zygopophyseal joint posteroanterior mobilisation or a static posterior chain muscle stretch on the range of passive straight leg raise (SLR) in comparison to a non-treatment control. Using a single-blinded, randomised controlled study design, 36 healthy participants were allocated into one of three groups (control; mobilisation; static posterior chain muscle stretch). Measures of SLR were taken before and after intervention for each group on the day of testing. A General Linear Model (GLM) and a paired sample t-test showed a significant difference between base line and post-intervention for the mobilisation group only (p < 0.001), and suggests that unilateral lumbar spine zygopophyseal joint mobilisation can immediately restore posterior chain neurodynamics.

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    • "The researcher practiced the mobilization while listening to the metronome until he became proficient in applying a postero-anterior mobilization at the set frequency of 2 Hz. This was the same dosage as administered to the participants in the Szlezak et al., 2011 "
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    ABSTRACT: Few studies have reported the effects of lumbar spine mobilization on neurodynamics. In a recent study, Szlezak et al. (2011) reported immediate improvement of posterior chain neurodynamics [range of passive straight leg raise (SLR)] following ipsilateral lumbar spine zygopophyseal (Z) joint mobilization. We re-duplicated the study with a 24 h follow-up measurement. Sixty healthy college students were assigned to two groups, mobilization and control. The mobilization group received ipsilateral grade 3 Maitland mobilizations to Z joint at a frequency of 2 MHz for 3 min and the control group received no treatment. The SLR was measured before and after the intervention for both the groups on the day of testing and 24-h later. Repeated measures ANOVA showed statistically significant pre to post improvement in SLR range after mobilization. The improvement was retained at 24-h. The results of the study are consistent with Szlezak et al. (2011). Copyright © 2014 Elsevier Ltd. All rights reserved.
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