الفهرس 
Title : Effect of scapular upward rotation exercises on neural tissue mechanosensitivity In subjects with depressed scapular alignment
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Abstract
Background: Although passive scapular correction and exercise programs yields
positive effects for regaining periscapular muscular function, and hence affect
neural tissue mechanosensitivity, further exercise programs need to be investigated.
Purpose: The current study aimed to assess the effect of scapular upward rotation
exercises on neural tissue mechanosensitivity in depressed scapular alignment
subjects. Methods: Thirty subjects classified as depressed scapular alignment were
recruited through screening test into a pre-test post-test single group experimental
study design. Brachial plexus mechanosensitivity, on the side classified as having
depressed scapular alignment, was assessed pre-test and post-test utilizing 1) strength
duration curve, both motor and sensory on the nerve to trapezius, 2) upper limb
neurodynamic test assessing symptoms response in terms of pain intensity and
quality, and 3) pain pressure threshold using pressure algometer over the peripheral
nerve trunks of the upper limb, the upper trapezius muscle and cervical zygapophyseal
joints. All patients received intervention in the form of scapular upward rotation
exercises for 6 weeks, 3 days per week. Results: As compared to pre-treatment
values, there was a significant increase in post-treatment sensory and motor Rheobase
values and a significant decrease in post-treatment sensory and motor chronaxie
values (p < 0.001). In the upper limb neurodynamic test, there was a significant
decrease in pain intensity of median, ulnar and radial nerves (p < 0.001). There was a
significant improvement in pain quality of median, ulnar and radial nerves (p <
0.001). The study showed that there was a significant increase in pain pressure
threshold (PPT) (p < 0.001). The percent of increase in PPT of median nerve, ulnar
nerve, radial nerve, upper trapezius, C2/C3 and C5/C6 zygapophyseal joints were
81.85%, 93.38%, 92.68%, 87.54%, 76.32% and 69.66 % respectively. Conclusion:
These results suggest that scapular upward rotation exercises reduce irritability of
neural tissues in subjects with scapular downward rotation syndrome (SDR), through regaining optimal scapular function and posture that reduces neuromuscular tenderness in subjects with SDR.