Effect of Shock Wave Therapy on Myofascial Pain Syndrome in Adolescent Athletes

Both groups will receive a designed physical therapy program, in the form of myofascial trigger points pressure release, stretching of the upper trapezius muscle, strengthening exercises, and infrared radiation for 4 weeks.

Adolescents of the experimental group will receive Extracorporeal shock wave therapy with the following parameters; low-level energy radial extracorporeal shock wave by (STORZ MEDICAL Master Pulse MP200), each subject received 3 sessions per week for 4 weeks with 700 impulse/session 400 impulse was applied to tight band and 300 impulses will be applied surrounding the tight band, with frequency \[10HZ\], resulting in positive energy flux density \[EFD\] 0.056mJ/mm.