Primary lateral sclerosis (PLS ... the muscle problems start in the legs and move up the body to the trunk, arms, and muscles ...

Medically reviewed by Jennifer Steinhoff, MD The transversus abdominis (TA) muscle is the deepest of the abdominal muscles.

01). Conclusions Larger lateral trunk bending associated with weak flexion strength increased knee valgus moment during single-leg landing. The core muscle training focused on trunk flexion strength ...