Effects of adding core stability exercises to neck stability exercises and Mulligan's spinal mobilization technique on pain, range of motion and neck disability index in patients with chronic non-specific neck pain.

to determine the effect of adding core stability exercises to cervical stabilization exercises and Mulligan mobilization technique on pain intensity, range of motion, and neck disability index in patients with chronic non-specific neck pain.

A randomized, double-blind, parallel controlled clinical trial will be conducted on 22 patients, using Random Allocation software for randomization.

both the assessor and the participants will be blinded to group allocation. Eligible participants will be evaluated at Iranmehr Hospital and the School of Rehabilitation, Tehran University of Medical Sciences, before the intervention, after 24 intervention sessions (post-intervention), and one month after the end of the study by the assessor. The control group will receive CS exercises & Mulligan mobilization, while the intervention group will receive CS exercises, Mulligan mobilization & core stability exercises.

Male and female aged 20 to 55 years with chronic neck pain, with or without radiation to the arms, lasting for at least 3 months, a pain intensity of 4 or higher on the Visual Analogue Scale and a Neck Disability Index score of 10 or higher will be included. Participants with specific causes of neck pain, infection, inflammatory disorders, tumor, osteoporosis, fracture, traumatic injury, cervical disc herniation requiring surgery, pregnancy, recent neck surgery and use of medications affecting pain or inflammation ,history of lumbar spine surgery, dizziness or uncontrolled hypertension will be exclude.

control group: cervical stability exercise (CS) & neck mulligan mobilization intervention group: CS exercise & neck mulligan mobilization & core stability exercise

pain intensity, neck range of motion, functional disability, dynamic balance, patient global impression of change.

Participants will be allocated to the intervention and control groups using a block randomization method with balanced blocks of four and a 1:1 allocation ratio. The random sequence will be generated using Random Allocation Software. The person responsible for generating the random sequence will not be involved in any stage of intervention delivery, participant assessment, or data analysis. After confirming participants’ eligibility based on inclusion and exclusion criteria, each set of four participants will form a block, and the software will randomly assign two participants to the intervention group and two to the control group, ensuring balance and randomness throughout the study. To maintain allocation concealment, each participant’s random code will be placed in identical, sealed envelopes. These envelopes will be opened in order of participant enrollment by a person not involved in the intervention process, revealing each participant’s group assignment.

This study will use a double-blind design, meaning that both the participants and the assessor will be unaware of the type of intervention each participant receives (treatment or control group). The intervention will be delivered by a therapist different from the assessor, who will measure the outcomes only before and after the intervention, without access to group allocation.

Some data, such as the mean age and study-related outcome information, can be shared.

The access period begin 6 months after publication of the results.

The data will be available to researchers affiliated with academic and scientific instititions.

The data are only permitted for scientific research analyses, not for commercial or promotional purposes. Analyses must comply with research ethics and maintain data confidentiality. Requests must be submitted formally, along with a research proposal and ethics approval. Data will only be made available after review and approval by the principal research team.

Fatemeh Razmkhah fatemeh.razmkhah76@gmail.com

Requestors must submit a formal research proposal along with their ethics approval to the principal research team. After review and approval of the proposal, the de-identified data will be provided in an appropriate format. The review and data delivery process typically takes approximately 4–6 weeks.