Prisoner Side Crunch - Quadratus Lumborum and low back strengthening exercise
Exercise Overview
The Prisoner Side Crunch is a standing trunk-strengthening exercise that targets the quadratus lumborum and other lateral core muscles. It is commonly used to improve side-bending strength, trunk control, and low back stability during functional movement.
Muscles Involved
Quadratus lumborumInternal obliqueExternal obliqueErector spinaeTransversus abdominis
Related Conditions
Nonspecific low back painLumbar instabilityCore weaknessLateral trunk weaknessPostural control deficits