If yr left ITB is still 'shorter' and tighter, it is no longer elastic and so will continue to hold yr left hip down lower relative to yr right. Even if yr right glute med is strengthened, u will still experience some foot splay on yr right and poor coordination bec thr right side is being pulled upwds.
Like when we treat achilles injuries, I find that using eccentric strengthening for ITB in this case works well. But for ITB specific we need to combine both concentric as well as eccentric strengthening so as to restore the band's elasticity and durability. W/o the left ITB's elasticity, our left leg will pick up way slower than our right, upsetting the timing and coordination of the running cycle.
Therefore, while the right leg will 'shoot up' naturally partially due to the elastic qualities of the muscles on that side, the left leg will need to clear the ground solely by conscious muscular activation, taking more energy as a result. This creates a scenario where we tire out more on the left than on the right side and this is where we lose coordination.
Also the 'higher' right side takes longer to land and if the right glute med is weak the right foot will land anteriorly crossing the midline of the body, resulting in overpronation and splaying. The left leg will land too much laterally and oversupinates, due to the left ITB being too stiff and thus restricting the leg's ability to adduct.
It is easy to see where excessive left track turns come in here. When the left leg is on the curve, the left ITB works extra hard to keep yr leg fr collapsing inwds fr over-adduction. This balances out the rest of yr body as it runs thru the turns w/o falling infield. Due to either ITB weakness or over-use, the band becomes inflamed and tightens, and that's why it causes the left leg to be perpetually more 'abducted' because it is over-used in countering adduction.
Moreover, most tracks are not really flat as we might think. They r usually cambered towards lane 1 to facilitate drainage. Just go to a track after heavy rain and check out where most of the water accumulates. Probably lanes 1 & 2.
That means we have a situation where our left leg is running on lower ground all the time when we mk counterclockwise turns. According to most injury findings on ITBS, the leg running on lower side of roads/paths will most often be the afflicted leg because the band needs to pull down harder and longer in order to mk grd contact as well as to 'spring up' harder upon footstrike. With every lower step that leg takes our whole gait tilts left-wards more before we return to neutral posture.
We already know what the left turns do to the hips; add this to the lower ground we expose our left leg to continuously and u have left ITBS and shortened TFL, misfiring right glute med, possibly right achilles tendonitis, stress fracture and knee pain on either side.
Result: Loss of coordination in leg.
That's why I suggest checking out the ITB just in case....
