Effects of Janda's Approach Versus Instrument Assisted Soft Tissue Mobilization on Pain, Fatigue and Posture Among Individuals With Upper Cross Syndrome

Upper Crossed Syndrome (UCS) is a widespread muscle imbalance defined by tightness in the upper trapezius, pectoralis major and minor, and sternocleidomastoid, coupled with weakness in deep neck flexors, lower trapezius, and serratus anterior. It is usually triggered by sustained faulty posture, predominantly in computer users, drivers, or other prolonged forward head and trunk flexion positions, resulting in pain, fatigue, limited ROM and functional limitations.

On a global scale, estimates suggest that UCS affects between 11% and 60% of individuals, spanning various age groups and cultural backgrounds. Individuals who engage in prolonged slouching, such as desk workers, teachers, drivers, IT professionals, students, and laundry workers, demonstrate prevalence rates of approximately 32.4%, 16.2%, 26.4%, 67%, 37.1%, and 28% respectively.

Janda's approach, aims to restore or normalize muscle balance and refine posture by combining stretching of tight and overactive muscles with strengthening of weak and inhibited muscles, in sequence. Instrument-Assisted Soft Tissue Mobilization (IASTM) enhances ROM and alleviates pain by directing myofascial restrictions. As adjuncts, hot packs and transcutaneous electrical nerve stimulation (TENS) are frequently used to reduce discomfort and prepare tissues for further therapeutic interventions.

Although numerous intervention techniques are offered for UCS but limited research has compared Janda's approach and IASTM, especially with respect to their impact on fatigue. Therefore, this study aims to evaluate and compare the effects of these interventions on pain, fatigue, and posture in adults with UCS.