Table 2 Description of the flexibility exercises used in the 8-week intervention program

Pectoralis flexibility

Supine on a foam roller with their spine, contracting transverses abdominous and flattening the lumbar curve against the foam roller. Arms together with shoulders and elbows flexed to 90°, touching forearms and palms.

Then shoulders horizontally abducted and scapula retracted, wrists and elbows aligned in the plane of the body. Holded for 5 s and repeated 10 times.

Chin tucks

The chin pushed into the table in an entirely posterior motion. It was not an exercise of tucking the chin to chest through neck flexion