Hypo-pressive Abdominal Exercise on Inspiratory Muscle Strength, Diaphragm Thickness and Pain in Chronic Nonspecific Low Back Pain

The purpose of this study will be to assess the effects of an 8-week hypo-pressive abdominal exercise program on Inspiratory muscle strength, diaphragm thickness, pressure pain threshold and disability in patients with non-specific chronic low back pain. A randomized clinical trial will be carried out. A total sample of 40 patients with non-specific chronic low back pain will be recruited and divided into 2 groups including an experimental group (n=20) which will receive an 8-week hypo-pressive abdominal exercise program and a control group (n=20) which will not receive any training program. Inspiratory muscle strength, diaphragm thickness, pressure pain threshold and disability will be assessed.