Effects of a Wearable Device ,Phone App and Exercise on Cervico-thoracic Posture in University Students.

Forward head posture(FHP) and thoracic kyphosis are increasingly prevalent among university students due to sustained flexed-neck postures during smartphone use, laptop-based study, and prolonged sitting. Chronic FHP alters the normal cervical lordotic curve, increases mechanical loading on cervical spine structures, and has been associated with muscular imbalance, cervicogenic pain , and headache.

Conventional postural correction exercise programs are well established, but adherence to postural correction outside of supervised sessions remains a key limitation. Students are typically unaware of their posture lapsing during daily activities such as studying, phone use and prolonged sitting and correction cues are usually absent outside the clinical or exercise setting.

Technology-assisted feedback systems have emerged as a potential solution to this adherence gap. Wearable biofeedback devices provide immediate, real-time correction cues when a threshold postural deviation is detected, theoretically reinforcing correct postural habits through continuous behavioral conditioning. App-based reminder systems, offers a scheduled, intermittent prompts rather than continuous monitoring , it is more practical and scalable given lower cost and no specialized hardware requirement.

This three arm, parallel group randomized controlled trial is designed to generate comparative evidence on the relative effectiveness of continuous biofeedback, scheduled reminders, and conventional exercise therapy alone, in order to inform evidence-based, resource-appropriate postural correction strategies for university and academic health settings.

The results of this trial are intended to directly inform clinical decision-making for physiotherapists and university wellness programs considering adoption of wearable or app-based postural correction tools. Should either technology-assisted approach demonstrate superiority over conventional exercise alone, this would support integration of low-cost, scalable postural feedback technology into standard student musculoskeletal health programs. Conversely, if outcomes are comparable across groups, this would support conventional supervised exercise as a sufficient, lower-cost first-line approach, without the added expense or complexity of technology-assisted feedback devices.

University students represent a population with high daily screen-time exposure and sedentary study behavior, making them broadly representative of the wider demographic at risk for posture-related cervical musculoskeletal strain seen in academic and early-career professional environments. Evidence generated from this population is expected to have relevance beyond the immediate study setting, informing postural health strategies applicable to similarly screen-intensive occupational and educational contexts.

Inclusion criteria

• University students aged 18-30 years enrolled in a degree program at Riphah International University.
• Daily sitting duration ≥ 5 hours (academic and/or device-related activities).
• Presence of at least one observable postural deviation confirmed at baseline assessment: forward head posture (CVA < 50°), rounded shoulders (protracted shoulder distance in supine line), or thoracic kyphosis (> 40° via digital inclinometer).
• Smartphone ownership and basic digital literacy

Exclusion criteria

• History of spinal surgery, vertebral fracture, or major cervical/thoracic trauma within the past 12 months.
• Diagnosed neurological disorders affecting posture or motor control (e.g., Parkinson's disease, stroke, cervical dystonia).
• Structural spinal deformities requiring active medical or surgical management (e.g., scoliosis Cobb angle > 20°, Scheuermann's kyphosis).
• Current participation in physiotherapy, chiropractic treatment, or another structured posture correction program.
• Cardiovascular or pulmonary conditions contraindicating moderate-intensity exercise (e.g., uncontrolled hypertension, severe asthma).
• Skin conditions, open wounds, or allergies precluding safe use of the posture correction belt.