all had a thin outsole

My friend Mark Cucuzzella is conducting a survey about Chi Running in conjunction with Chi Running founder Danny Dreyer. I had the opportunity to meet Danny at the recent running injury conference I attended in Shepherdstown, WV, and was able to participate in a short, one hour Chi Nike Air Max 270 HombreRunning workshop with him. I was impressed by Danny’s patient and thoughtful approach to teaching running form, and had the opportunity to talk with a number of runners who have benefitted greatly Nike Air Max 2017 Mens by adopting Chi. Mark asked me if I would be willing to post a short message introducing and linking to their survey – if you have experience with Chi Running, please Nike Air Max 90 Femme consider filling it out.I’ve been reading your blog for about 6 months now and really enjoy it. I took up running after having a heart attack at only 42 and receiving three stents. Running is one of the few activities where I can get my heart rate up in a short time. I knew that I would be doing this for the rest of my life and was looking for a way to avoid injury. I read the Chirunning book and adapted to it quickly. After reading your blog and many other articles on running, I’m not sure that anything new to the running world is adressed in the book. I’m thankful for having read the book and changing to a midfoot strike. By adding “chi” to the word running, Nike Air Max 95 Femme> Mr. Dreyer seems to have no problem taking credit for changes in running form that have been around for a long time. But he has marketed himself well and reached a large Nike Air VaporMax Damen audience. He got me and I’m thankful for it.Today on the Peak Performance blog Amby Burfoot discusses a new study by a research team at the University of Massachusetts headed up by running biomechanist Dr. Joseph Hamill (see abstract here). The study is an interesting contribution to our knowledge of how running shoes affect the way we impact the ground while we run, and adds to the growing base of literature showing that running barefoot reduces both peak impact forces and loading rate (how fast the foot impacts the ground) relative to running in shoes. Increased loading rate has been linked to injuries such as stress fractures.What Hamill and colleagues did Nike Air Max 90 Hombre was to take a group of ten runners who were heel strikers and have them run across a force plate 10 times in each of four footwear conditions. Three of these were 4mm drop shoes (i.e., 4mm heel lift relative to the forefoot) that Nike Air Max 95 Femme varied only in the total thickness of the midsole cushioning (all had a thin outsole). In other words, the shoe conditions were as follows in terms of midsole cushion: 4mm heel, 0mm forefoot; 12mm heel, 8mm forefoot; 20mm heel, 16Nike Air Max 90 Dames mm forefoot. The fourth condition was to have the runners go barefoot. None of these runners appear to have been habitual minimalist or barefoot runners, so the study is basically looking at how a runner used to running in a typical modern shoe changes when they go to a 4mm drop shoe (of varying midsole configuration) vs. barefoot. This is short term, immediate change as the Nike Air Max 90 Dam runners did not run for an extended period of time to acclimate themselves in any of these shod or unshod conditions (acclimation was only 5-10 minutes prior to data collection).What the authors found was that impact characteristics and knee/ankle stiffness did not vary among the 3Asics Gel Lyte 3 Femme  shod conditions. The runners all remained heel strikers in the 3 iterations of the 4mm drop shoes, though details of gait kinematics such as stride rate, length, etc. were not reported. Asics Gel Lyte 5 Femme However, when running barefoot, which presumably was a novel behavior for these runners, they adopted a midfoot/forefoot strike (I was a bit confused by how they define midfoot since they talk about the foot contacting on the midfoot after which the heel comes down – I tend to think of midfoot being simultaneous contact of heel and the base of the fifth metatarsal). Nike Air Max 2017 MujerAssociated with this is the fact that impact peak and loading rate were significantly reduced, time to reach impact peak decreased, and ankle stiffness increased in the barefoot condition.