As a runner: To Cross-Over or not to Cross-Over ? That is the question. Lets go back and talk about the Cross Over Gait again (yes, again). This is the next level.
*watch this video (link) and notice 2 things: 1. the size of the glutes on these amazing athletes and 2. pay attention to the few seconds at 1:32. No Cross Over gait anywhere.
If you look at any video on the web of ANY sprinter in competition from the front or back (sagittal progression), you will always see the knees and feet falling underneath the hips. Watch video above again and see this. You will never see a sprinter cross over like we see in many distance runners. Why is that ? Here, look this video (link) as well, at the 1:30 mark there is a great overhead view of the field, look for one of these fellas crossing over, you will not see it. Here are starts out of the blocks, clear abduction (link) and no cross over, in fact there is more leg abduction separation coming out of a start to get more glute power (think of a skater, same thing). Now get on YouTube and watch any distance race and you will have to work at finding non-Cross Over runner or at least someone who is at the tipping point. Everyone does it, but does that make it right ? Does it make it wrong ? Does it make them vulnerable to injury more ? We think it does.
We believe to reduce injury the cross over needs to be corrected. However, in distance running less brute power is needed, we need to conserve energy so we need to dial to a more reasonable and economical and efficient running gear. In distance athletes and your typical 20+ mile a week runner less gluteal power is needed, but most runners have just gone past that tipping point and get into under use and begin to cross over. Lets see if we can expand on this theory a little more.
Well, there are no studies on this. As far as we know we are the only ones trying to solve this mystery of the tipping point cross over gait/run style. Go ahead, search on the web, we seem to be on a solitary voyage all on our own, thankfully we have our Gait Guys brethren (you guys !) with us. It does however bode the question for us, “Why are we able to get so many of these chronic distance runners over their injuries by addressing their Cross-Over Gait and its frequent weaknesses (gluteus medius/maximus/medial quadriceps), excessive pronation and their tightness’s (IT band etc). Why do our sprinters have an entirely different injury pattern ?” Sure the athletes are different and their events are different, that is the simple answer but it is not good enough. One athlete is built for speed, the other built for distance and endurance. But there is something big here that needs all of our attention.
Here is the fundamental difference. We get some vocal challenges particularly from distance runners (but less with time as our theory has yet been refuted) that the cross over is more efficient for a distance runner. (Example of another great cross over here in case you are new to our work on this topic (video link)). We disagree, for now, until research can disprove our theory which has been several years in development. The Cross Over Running form challenges the normal pendulum effect of the lower limbs and challenges the biomechanics of the hip frontal plane stabilizers, namely the gluteus medius (need a biomechanics refresher? , click here). Why would you want to change the natural leg pendulum in a runner ? This is not good running economy, although you will have a fight on your hands if you ask a runner to convert to our anti-cross over gait and drag them from their deeply engrained and comfortable cross over running style ! Beware, they are going to tell you it doesn’t feel right, it is too hard, it feels awkward, “it cannot be right !" Well, so does brushing your teeth with the opposite hand but that doesn’t make it wrong. Our 3 part series on Cross Over Running is pretty thorough if you want to learn more, but this is not the place. We feel we have been pounding the floor on those issues long enough.
Here is our question, go and do your own observational work as well.
Look at the glutes of sprinters (watch the main video with this post again), compare size ratio of glutes to quads. Sprinters have bigger glutes, sure they have massive legs but they have glutes to match that power. Their glutes are in charge of their hip and pelvic mechanics. When there is mismatch there is often injury.
Distance runners have much smaller glutes, their buttocks are small, in some cases you wonder where it has all gone ! But their quadriceps are massive in comparison in many cases. It is clear that in most of the cases the ratio is not the same as in sprinters. There is a mismatch. We like to say that their quadriceps are in charge of their hip mechanics, and are certainly not suited to do so. Now, we know the argument that will arise, that being they are different activities and thus they should be different. Our only argument there is that the quadriceps should not have such a dominance over the gluteal and hip biomechanics. Watch our two part hip biomechanics videos on YouTube again.
When we put our distance athletes on our Total Gym slide-squat board to do primitive squat isolations the distance runners have a great deal of difficulty “getting themselves out of the quads and into the glutes”. The sprinters automatically go right into the glutes, or clearly have a better time of finding the correct pattern in controlling hip extension and eccentric hip flexion during the decent of the squat.
Here is the bottom line. The glutes should always be in charge over the quadriceps when it comes to hip biomechanics. Mess up this ratio and dominance and problems will occur. This goes for both distance runners and sprinters, actually all human beings no matter what sport. It has become painfully clear that the cross over gait allows the leg pendulum to shift too far medially and this is controlled largely by the gluteus medius and its synergists on a neutral pelvis and stable core controlling it. Crossing over is poor gait economy, you must block that faulty cross over collapse. A good distance runner will come right up to the fence, to the tipping point, but not fall off the proverbial fence. Go too far, and the injury clock starts ticking. If you are a runner or even a distance walker and you are crossing over even a little, you need to correct this gait pathology in our humble opinion. You are just not using your glutes correctly and effectively.
( By the way, Here is a drill (link) not to do for a sprinter or any runner for that matter in our opinion, it is driving cross over both mentally and physically. If we had our way he would have run with his foot contact drifting to the outer limits of each marker maintaining a nice vertical pendulum of the limbs from the hip axis, we wouldnt have him run down the line. We ask our runners to run on either sides of the lanes on the track, not between the lines and in the lane. It is a great place to start. It is just enough to get the feel right. We know of two coaches doing this from our consultations with them, we know they are on a serious journey to championship seasons. And, when we walk onto their fields and we see all the runners running down the lines and not down the middle of the lanes we smile. We know it looks crazy. But sometimes crazy is right !
Shawn and Ivo. Beating our bloody foreheads against the wall each time we see another cross over runner with hip, knee or foot issues. You gotta fix the neuromotor pattern problem too !!!!!!!!!! All the in-clinic rehab and physical therapy in the world will not stave off re-injury if the pattern is not corrected !
whew ! (thanks for hanging in there gang…..long post today !)