Background: Mulligan sustained natural apophyseal glide (SNAG) is a mobilization technique that aims to reduce pain and improve function by correcting positional errors in the facet joint.

Purpose: To investigate the immediate effects of the Mulligan SNAG application on muscle stiffness, pain, pressure pain threshold (PPT) and range of motion (RoM) in patients with chronic mechanical neck pain.

Methods: A randomized, double-blind trial was conducted. Forty individuals with chronic mechanical neck pain (mean age = 39.35 ± 6.68 years) were randomized into two groups: Mobilization with movement group (MWMG), and sham group (SG). Muscle stiffness was measured with MyotonPro, pain intensity with Numerical Pain Rating Scale, cervical RoM with a digital inclinometer, and PPT with an algometer. Measurements were performed pre-and 5 minutes post-intervention in a single session.

Results: Muscle stiffness significantly changed in the MWMG for the left trapezius and right cervical extensors ( = .003, effect size (ES) = 0.42;  = .031, ES = 0.49, respectively), whereas no significant changes were observed in the SG ( = .097, ES = 0.12;  = .270, ES = 0.22, respectively). The MWMG showed improvements in pain ( = .001, ES = 0.70) and RoM (right:  = .0001, ES = 0.89; left: = .0001, ES = 0.99). The SG also showed improvements in pain ( = .0001, ES = 0.76) and RoM (right:  = .0001, ES = 0.49; left:  = .0001, ES = 0.35). PPT improvements were observed in the MWMG for right and left trapezius ( = .0001, ES = 1.21;  = .040, ES = 0.43, respectively), whereas no significant changes occurred in the SG ( = .713, ES = 0.03;  = .839, ES = 0.01, respectively).

Conclusion: The mobilization with movement technique leads to significant immediate improvements in muscle stiffness and pain-related parameters in individuals with chronic neck pain.

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http://dx.doi.org/10.1080/09593985.2025.2473471DOI Listing

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