TJ, Blind Boy, Stomper:A
TJ, Blind Boy, Stomper:
A review of the Liebermann videos shows that the high point of the curve is almost always the same, reaching nearly 3 times the body weight of the runner, at least for the runner in the videos.
IMHO, the bfr will have less vertical movement. My form has completely changed to where my head moves up and down not more than 5 cm. Others bfr describe their running as if they are sitting on a bar stool, with only their feet moving. The feet might spend more time in the air because of a fast pull, but this does not mean that the body actually has to go higher. The lack of a spike is significant, but a full study would have to figure out whether the total force is lower.
Really significant is the discovery that the bfr in the video is a lab assistant without much bfr experience. As I said, they have to repeat the experiment with different runners. I would imagine that even a trained barefoot runner, who was told s/he has to wear shoes (gasp!) and heal strike (for the sake of science), would still have a lower total peak force than a typical shod runner.
TJ, Blind Boy, Stomper:
A review of the Liebermann videos shows that the high point of the curve is almost always the same, reaching nearly 3 times the body weight of the runner, at least for the runner in the videos.
IMHO, the bfr will have less vertical movement. My form has completely changed to where my head moves up and down not more than 5 cm. Others bfr describe their running as if they are sitting on a bar stool, with only their feet moving. The feet might spend more time in the air because of a fast pull, but this does not mean that the body actually has to go higher. The lack of a spike is significant, but a full study would have to figure out whether the total force is lower.
Really significant is the discovery that the bfr in the video is a lab assistant without much bfr experience. As I said, they have to repeat the experiment with different runners. I would imagine that even a trained barefoot runner, who was told s/he has to wear shoes (gasp!) and heal strike (for the sake of science), would still have a lower total peak force than a typical shod runner.