الفهرس 
Title : The effect of lumbar lordosis rehabilitation on s1 alpha motor neuron excitability in chronic non specific low back pain
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Abstract
Background: chronic non specific low back pain (CNLBP) represents a significant public health problem and an economic burden to employers. Purpose: This current study was designed to investigate the effect of lumbar lordosis rehabilitation in form of Denneroll traction on S1 alpha motor nerve excitability and absolute rotatory angle in patients with chronic nonspecific low back pain. Subjects and methods: This study was conducted in the Outpatient Clinic of Cleopatra Hospital and from the outpatient clinic, Faculty of Physical Therapy, Cairo University, Egypt. This study was conducted from March 2017 to July 2018. Patients would randomly be divided into two equal groups using coin toss method (Heads for one group and tails for another group): group (A) (control Group):composed of 15 patients with nonspecific CNLBP who received conservative treatment only in form of ultrasound therapy plus stretching and strengthening exercises for 10 weeks. group (B) (study Group): composed of 15 patients with nonspecific CNLBP who received lumbar lordosis rehabilitation in form Denneroll traction plus conservative treatment in form of ultrasound therapy plus stretching and strengthening exercises for 10 weeks. H reflex amplitude, H/M ratio and absolute refractory area were measured before and after treatment. Results: The obtained results of the present study indicated a significant difference of the measured variables (H-reflex amplitude, H/M ratio and ARA) after ten weeks of treatment program in the participated patients of both groups when compared to the results before the treatment. Comparing the post- treatment results of both groups (study and control) revealed significant difference in the mean values of H/M ratio and ARA in favor of the study group