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July 25, 2008

Midfoot strike, Forefoot strike or Heel strike…which one is best?

There seems to be much debate in the running community today on what is the best footstrike for running. Runners of all levels divide themselves into three basic camps: the midfoot strikers, the forefoot strikers and the heel strikers. So, here is my attempt to put forward my best understanding of the three basic types of foot strike and what each one does for a runner.

The Midfoot Strike
The midfoot strike is characterized as having your heel and the ball of your foot touching the ground simultaneously with each foot strike. You can see this very clearly when you watch young children run. They always land with their whole foot on the ground. I would say that at least 95% of all people run this way as kids.

In the ChiRunning technique, we promote the midfoot strike because it is, for most runners, the most injury-preventive way to run. Our emphasis is on preventing the lower legs (including the knees) from over-working, because this area of the body is where, conservatively speaking, 90% of all running injuries occur. Plantar fasciitis, achilles tendonitis, shin splints, calf pulls, knee pain, IT band problems, over-pronation, bunions, metatarsal and tibial stress fractures, and hammer toes lead the list of the most common running injuries. This list is immense compared to everything that can go wrong above the knees.

The propulsion in ChiRunning comes from allowing your body to fall forward with the pull of gravity, not from pushing yourself forward with your feet and legs. For this reason it is more energy-efficient because your legs are not required for propulsion. When your feet come down onto the ground, they land either under or slightly behind your center of mass, in a midfoot strike. The only work required of your legs is to provide momentary support for your body between strides. Landing on your midfoot, in most cases, either reduces or eliminates the work done by A.) the lower leg muscles…especially the shins and calves, and B.) the two tendons that are most commonly injured… the plantar tendon and the achilles tendon.

The ChiRunning technique is primarily focused on energy efficiency and injury-prevention with speed being a secondary focus.

The Forefoot Strike
The forefoot is basically the part of the foot between the forward-most part of the arch and the end of the toes… generally speaking, the balls of the feet. If your heels don’t touch the ground when you run, you’re a forefoot striker.

Sprinters, middle-distance runners, and some triathletes tend to prefer running on the forefoot because of the extra speed obtained by “paw-back” and “toeing off.” This way of running is great if you want lots of speed, but it puts the responsibility for most of the body’s propulsion squarely onto the legs…especially the lower legs. Some of the faster elite middle-distance runners (i.e. Kenyans, Moroccans, Ethiopians, Mexicans) run with a forward lean added in combination with a forefoot strike. This takes some but not all of the burden off the lower legs.

Because forefoot running is primarily used for running at faster speeds, energy efficiency tends to take a distant back seat. As far as being injury-preventive, forefoot striking helps prevent knee injuries because it lowers the impact to the knees. This is a good thing. But the problem with it is that running on the balls of your feet increases the workload on your calves, shins, achilles tendons, and plantar tendons, so you risk either overworking a muscle or pulling a tendon if you go too far or too fast while running on your forefeet.

The Heel Strike
Heel striking is when your heel strikes the ground in front of your body. At least 75% of all runners run with a heel strike. The interesting thing about this fact is that, although it is by far the most common of all the footstrike patterns, it is not done by choice, but by default. The vast majority of all runners are not elite runners or competitors, they’re just regular folks like you and me, who like to run and like to stay fit.

Most recreational runners tend to run with their body in an upright position… with no lean at all. This forces them to have to reach forward with their legs when they run…and when you run upright and reach with your legs, your feet will always land in front of your body and your heels will come down first. When you run this way, you’re basically putting on the brakes with each stride, which sends a lot of impact to your lower legs and knees. For this reason, many heel strikers complain of knee pain at some point in their running career. This is the group that keeps orthopedists and physical therapists in business.

But, just because you might be a heel striker, it doesn’t mean you’re doomed to be a heel striker for the rest of your life. Work on improving your running technique. If you can learn to run safely and efficiently, you’ll be eliminating the causes of running injuries and you won’t have to worry about ending up in a doctor’s office getting fixed.

The midfoot strike works for most runners…the forefoot strike works for some runners…but, the heel strike doesn’t seem to work well for anybody. Try all three and see which one works the best for you.

With the ChiRunning book, DVD or audio CD you can easily learn the midfoot strike. We offer you an alternative way to approach your running so that you can learn the midfoot strike and spend many more years enjoying one of the world’s best and most natural sports.

Happy trails,

Danny

January 31, 2008

How to Avoid Sore Quads

I’ve been focusing lately on relaxing my quads so that I can get them to work even less than they already do. (It’s a regular practice of mine to use efficiency as my mantra.) Here’s what I’ve been working on. As my leg swings out behind me I allow my spine to twist which in turn allows my hip to go rearward along with my leg. (This is covered on pages 179-180 in the ChiRunning book.)

But, here’s an important aspect of allowing your leg to swing to the rear instead of thinking of swinging it forward. If I think of my leg as swinging to the rear instead of forward, my leading leg (opposite) is much more likely to come down in a mid-foot strike. Whereas, if I lift my leg forward it is more likely to swing too far forward, creating a heel strike. In order to avoid lifting my leg forward, I found that as soon as my rear foot leaves the ground, I need to relax my quads so that I do not engage them to lift my leg forward. The reason why I want to avoid using my quads is because they are the largest muscles in my body; they require lots of fuel and oxygen; and they take time to recover.

What I discovered today was this; in order to keep my quads from engaging I need to keep my knees as low as possible as my feet return to the midfoot strike position. The job of returning my leg to the support phase is left to the recoil action of the tendons in my psoas and hip flexors, which are stretched like elastic bands with each rearward leg swing. The recoiling action of the large tendons in the core muscles takes the place of the quads having to do the work of returning the leg to the support phase.

BUT, keeping my knees low does not imply that I’m keeping my feet low. Quite the opposite. I make sure that my feet are coming up behind me and that my knees bend more as my speed increases.

I know this probably sounds a bit technical, but just take your time digesting it. And when you think you grok what I’m talking about, go out and try it. I will say that this gets into some of the advanced material. I would not expect (or even require) a beginning ChiRunner to be able to apply this to their running in the early stages of learning the ChiRunning form, simply because the basic focuses are more important to think of when you’re first learning this technique.

Happy trails,
Danny



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