Percussive Therapy vs Instrument-Assisted Soft Tissue Mobilization on Chronic Non-Specific Low Back Pain.

PT will be performed by the same researcher using a hand-held massage gun, tapping at a frequency of 30 Hz (rotational speed 1800 rpm/min) with a flat massage head. Each percussive massage session will last for 15 minutes. This frequency of 30 Hz is chosen based on its effectiveness for myofascial release and previous studies have indicated that a 15-minute duration of back massage is beneficial

The Graston group performed as IASTM during 4 weeks. After warmup session, Friction free oil or gel was used to facilitate the device to move over the skin. Gua Sha tools were used. The instrument was kept at 45°, moved over the skin from cranial to caudal for 40-120 Sec on the back, while patients were lying in the prone position.The mobilization with sweeping strokes followed by fanning strokes were applied over the Erector spinae, quadratus lumborum, scrolling the device on the muscle belly from the posterior fascia and sacrum.