Elastic kinesiology tape (Kinesio Tape Tex Gold, 5 cm width) will be applied to the shoulder region. A Y-shaped strip will be placed over the anterior and posterior deltoid muscles with 10-15% tension during shoulder positioning in external rotation and abduction/adduction. An additional I-shaped strip will be applied over the acromioclavicular joint for mechanical correction. Application will be performed by a trained physiotherapist.

Participants in this group will receive sham taping using the same elastic kinesiology tape (Kinesio Tape Tex Gold, 5 cm) applied without therapeutic tension or mechanical correction. The tape will be placed superficially over the shoulder region to mimic the application procedure without intending to produce biomechanical or neurosensory effects.

Elastic kinesiology tape (Kinesio Tape Tex Gold, 5 cm width) will be applied to the shoulder region. A Y-shaped strip will be placed over the anterior and posterior deltoid muscles with 10-15% tension during shoulder positioning in external rotation and abduction/adduction. An additional I-shaped strip will be applied over the acromioclavicular joint for mechanical correction. Application will be performed by a trained physiotherapist.

Shoulder pain intensity will be assessed using a 10-cm Visual Analog Scale (VAS), where 0 indicates no pain and 10 indicates the worst imaginable pain. Pain will be evaluated at rest, during activity, and at night.

Shoulder joint range of motion (flexion, extension, internal rotation, and external rotation) will be measured using a universal goniometer.

Kinesiophobia will be measured using the Tampa Scale for Kinesiophobia, a 17-item questionnaire scored on a 4-point Likert scale ranging from 17 to 68, with higher scores indicating greater fear of movement.

Proprioception will be assessed using a laser pointer-assisted angle reproduction test at predefined shoulder positions (55°, 90°, 125°). Angular deviation will be recorded in degrees.