Network Magazine spring 2015 | Page 31

SHORTENING THE LEVER By cueing participants to shorten the levers, you can help them avoid unnecessary strain and reduce their risk of back injury. WORDS: LISA GREENBAUM hen we move our spine into flexion, extension, twisting, or lateral flexion, the position of our arms can dramatically change the overall safety of our movement. Depending on our arm position, we can create a ‘long lever’ or a ‘short lever’. A long lever uses the arms to add to the overall length of the torso (e.g. when the arms are lifted so that the biceps are next to the ears). In this position, when we move the spine from neutral into extension, flexion, or lateral flexion, it increases the amount of load that the back supports. For the general popu ][ۋ\