Body Care and Maintenance – The QL and how it relates to paddlers by isaaclevinson | Mar 11, 2018 | Fitness, WhitewaterWhat is the QL? The QL or Quadratus Lumborium is a deep muscle in your low back that extends, stabilizes and laterally flexes your low back. It also aids in breathing and lifting your hip. I think this is a muscle that kayakers often overlook until...