A large following and interest in barefoot running has camisetas de futbol barcelona been developed lately, encouraged by Christopher McDougall's book "Born to Run" which describes the Tarahumara or Rarámuri, an indigenous peoples from Northern camiseta de barcelona Mexico, who have been known to run long distances in thin soled sandals. We recently assisted a runner with some video analysis as he trains to run a marathon wearing theVibram FiveFingers minimal shoe.
Last year we discussed using video analysis to?analyze rear foot pronation and attempted to see whether there was a difference in rear foot pronation between running in shoes and running barefoot. We described how a camera should camiseta nueva del barcelona be setup and the measurements that could be done. However, as we studied a runner who does not suffer from pronation we were only able to see a normal amount of pronation in the foot stance phase of his running.
Our runnerwanted to determine how much he was pronating when running in his FiveFingers minimal shoes. He also reported getting blisters under the pads of his feet and on his right big toe.
He used all the techniques for filming his motion that we have discussed on this website in the past and sent the videos on to us. He set up to run on a treadmill at a constant speed of 8.3 miles per hour and ran 12 miles in total capturing video at intervals along the way. Set his camera on a tripod at the level of the treadmill to capture the video and his foot placement. He captured video both from the side view and the rear view so that we could assist him in analyzing his foot strike.?
From the video we have taken a few snapshots to help us analyze his foot strike characteristics.
In the images above we can see a side view of the left and right foot strike. We can see that:
- Both the left and right foot is inverted at foot strike. This means the feet are turned in and the athlete lands on the outside of his foot.
- The main muscle used to invert the foot is the Tibialis Anterior (the muscle on the outside of the shin bone). These muscles are also used to dorsi-flex the foot (lift the foot up). This can be seen in the video as the foot and toes are flexed back just before foot strike.
- Striking with an inverted foot can create a slapping of the foot onto the ground rather than a controlled foot placement.
- Striking with an inverted foot can also exaggerate any rear foot pronation.
- The foot strike is occurring toward the midfoot and not the heel. This is to be expected when running in minimal shoes. The runner in minimal shoes is trying to avoid heel impact and is taking greater care to control his foot strike.