Effect of a Comprehensive Corrective Exercise Program With and Without Instrument-Assisted Soft Tissue Mobilization on Cervical Range of Motion, Muscle Strength, Disability, and Postural Alignment in Individuals With Upper-Crossed Syndrome

Upper-Crossed Syndrome (UCS) is a commonly observed postural dysfunction characterized by a predictable pattern of muscular imbalance involving tightness of the upper trapezius, levator scapulae, and pectoral muscles, along with weakness of the deep cervical flexors, lower trapezius, and serratus anterior. This imbalance alters normal cervical-thoracic alignment, resulting in forward head posture, rounded shoulders, and increased thoracic kyphosis. These postural deviations are frequently associated with neck pain, reduced cervical range of motion, impaired neuromuscular control, and decreased functional performance.

The prevalence of UCS has increased significantly due to modern lifestyle factors such as prolonged screen exposure, sedentary work environments, and poor ergonomic habits. Individuals including students, office workers, and healthcare professionals are particularly vulnerable. UCS is now recognized as a multidimensional condition involving biomechanical, neuromuscular, and sensorimotor dysfunction rather than a purely structural disorder.

Corrective exercise programs are widely regarded as the cornerstone of UCS management. These programs aim to restore muscular balance by stretching shortened muscles and strengthening inhibited muscles, thereby improving posture, alignment, and functional outcomes. Evidence from randomized controlled trials demonstrates that structured corrective exercise programs can significantly improve forward head posture, scapular alignment, muscle activation, and functional performance.

Instrument-Assisted Soft Tissue Mobilization (IASTM) has emerged as an effective adjunctive intervention in musculoskeletal rehabilitation. IASTM is believed to improve soft tissue mobility, reduce fascial adhesions, enhance local circulation, and facilitate neuromuscular activation. Previous studies have shown that IASTM can lead to reductions in pain, improvements in cervical range of motion, and enhanced functional outcomes in individuals with chronic neck pain and related conditions.

Despite evidence supporting both corrective exercise programs and IASTM independently, limited research has evaluated their combined effects specifically in individuals with Upper-Crossed Syndrome. Existing studies have often used general physiotherapy protocols without incorporating structured Comprehensive Corrective Exercise Programs tailored to UCS. Therefore, it remains unclear whether the integration of IASTM with a targeted corrective exercise program provides superior outcomes compared to exercise alone.

This study aims to address this gap by evaluating the effectiveness of combining IASTM with a Comprehensive Corrective Exercise Program (CCEP) in individuals with UCS. The study will be conducted as a double-blind randomized controlled trial at the Department of Physiotherapy and Rehabilitation, Ghurki Trust Teaching Hospital.

A total of 60 participants aged 18-40 years meeting the inclusion criteria will be recruited using a non-probability convenience sampling technique. Participants will be screened for eligibility and those meeting the criteria will be randomly allocated into two groups using a computer-generated randomization sequence. Allocation concealment will be ensured using sealed, opaque, sequentially numbered envelopes.

The control group (Group A) will receive a Comprehensive Corrective Exercise Program (CCEP), which includes stretching of overactive muscles, strengthening of weak muscles, and postural re-education exercises. The experimental group (Group B) will receive the same exercise program combined with Instrument-Assisted Soft Tissue Mobilization (IASTM).

Each intervention session will last approximately 40 minutes and will be conducted three times per week for six consecutive weeks, resulting in a total of 18 sessions. The exercise program will include therapist-assisted stretching of muscles such as the pectoralis major and minor, upper trapezius, levator scapulae, and sternocleidomastoid. Strengthening exercises will target deep cervical flexors, lower trapezius, rhomboids, and serratus anterior. Postural re-education and motor control exercises will be included to improve cervical and scapular alignment.

In the experimental group, IASTM will be applied to overactive muscles using standardized tools and techniques, including scanning, sweeping, and fanning. Each muscle group will be treated for a specified duration, followed by stretching to enhance tissue extensibility and reduce muscle tone.

Outcome measures will be assessed at baseline and after completion of the six-week intervention period by a blinded assessor. Cervical range of motion will be measured using a goniometer. Muscle strength and endurance will be assessed using the Deep Neck Flexor endurance test. Functional disability will be evaluated using the Neck Disability Index (NDI), and postural alignment will be assessed using a plumb line method.

Data analysis will be performed using SPSS software. Descriptive statistics will summarize demographic characteristics and baseline data. Normality of data distribution will be assessed using the Shapiro-Wilk test. Based on the results, appropriate parametric or non-parametric tests will be used. Between-group comparisons will be conducted using independent samples t-tests or Mann-Whitney U tests, while within-group comparisons will be performed using paired t-tests or Wilcoxon signed-rank tests.

Ethical considerations will be strictly followed throughout the study. Participants will provide informed consent prior to participation. Confidentiality of participant data will be maintained, and participants will have the right to withdraw from the study at any time without consequences. Any adverse events will be monitored and documented.

This study is expected to provide evidence regarding the effectiveness of combining Instrument-Assisted Soft Tissue Mobilization with a Comprehensive Corrective Exercise Program in improving cervical range of motion, muscle strength, functional disability, and postural alignment in individuals with Upper-Crossed Syndrome. The findings may contribute to improved clinical decision-making and the development of more effective rehabilitation strategies for postural dysfunctions.

Inclusion criteria

• Age between 18-40 years
• Both males and females
• Diagnosed with Upper-Crossed Syndrome
• Presence of forward head posture and rounded shoulders
• Chronic neck pain related to postural dysfunction

Exclusion criteria

• History of cervical spine surgery or fracture
• Neurological conditions (e.g., radiculopathy, myelopathy)
• Systemic musculoskeletal disorders (e.g., rheumatoid arthritis)
• Current physiotherapy treatment for neck pain
• Skin conditions preventing IASTM application