The effect of adding Global postural reeducation to lumbar - cervical motor control training on posture, proprioception, selected muscle strength, and scapular movement patterns in individuals with upper crossed syndrome

Determining the Effect of Adding Postural Retraining to Lumbar–Cervical Motor Control Exercises on Posture, Proprioception, Selected Muscle Strength, and Scapular Movement Pattern in Individuals with Upper Crossed Syndrome

This study is a single-blind randomized controlled clinical trial with a pretest–posttest design, including two intervention groups and one control group. The outcome assessor will remain blinded to group allocation. The study population consists of male students with Upper Crossed Syndrome (UCS) at Kharazmi University. Participants meeting the inclusion criteria will be selected using purposive sampling.The sample size was estimated using G*Power software (version 3.1.7). The calculation was based on a statistical power of 0.80, a significance level of α = 0.05, and an effect size of 0.26 derived from previous studies.The initial sample size was 39 participants. Allowing for a 15% dropout rate, the final sample size was increased to 45 participants.

Kharazmi University

Inclusion Criteria: Male participants with Upper Crossed Syndrome (UCS), forward head angle >44°, rounded shoulder angle >49°, and thoracic kyphosis angle (TKA) >42°.Presence of scapular dyskinesis. BMI 18–25 kg/m² and age 18–28 years. Exclusion Criteria: History of joint disorders involving the spine, shoulder,or pelvis, fracture, or surgery..Participation in exercise programs related to the study during the previous6 months.

Group Postural Retraining + Lumbar–Cervical Motor Control Exercises. Group Lumbar–Cervical Motor Control Exercises Alone. Control Group

Lumbar–Cervical Motor Control Exercises، Global postural reeducation، Posture، Proprioception، Selected Muscle Strength. Scapular Movement Pattern

This study is a **single-blind randomized controlled clinical trial**. The study employs a **pretest–posttest design** with two intervention groups and one control group. In this trial, the outcome assessor will be blinded to group allocation. Participants will be randomly assigned to one of three groups: (1) a **combined lumbar–cervical motor control exercises plus posture retraining group**, (2) a **lumbar–cervical motor control exercises-only group**, and (3) a **control group**. Randomization will be performed using the **Randomizer** software. The randomization sequence will not be disclosed to participants until completion of the baseline assessment. Outcome assessors will remain blinded to group allocation throughout the study. Although participants cannot be blinded to the intervention because of the nature of the treatments, they will not be informed which intervention is considered the primary treatment group.

This study is a **single-blind randomized controlled clinical trial**. The study follows a **pretest–posttest design** with two intervention groups and one control group. In this study, the outcome assessor will be blinded to group allocation.