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BeitragVerfasst am: 28.06.2019 07:31 Antworten mit Zitat
Anmeldedatum: 15.05.2019
Beiträge: 205

Forefoot striking has Nike Air Max 90 Mujer been shown to reduce vertical impact peak (many studies, Lieberman et al., 2010 is a recent example) and vertical impact loading rate (Oakley and Pratt, 1988; Williams et al., 2000) relative to heel striking. Data showing no difference between forefoot and rearfoot impact loading rate is out www.aquarillon.fr there (e.g., Laughton et al., 2003), but data are limited that involve people well acclimated to multiple landing types. Data on loading rates are sometimes difficult to interpret if runners are not acclimated to a barefoot running style – for example, De Wit et www.melanieo.fr al., 2000 Nike Air Max 95 Mujer showed dramatically increased vertical loading rate in barefoot runners compared to shod runners, but their barefoot runners were heel striking. One would fully expect a barefoot heel strike to exhibit a higher loading rate since little cushion other than the heel fat pad is Nike Air Max Classic BW Womens present to slow down force application. Lieberman et al., 2010 showed that habitually barefoot runners overwhelmingly land on the forefoot, which suggests caution when interpreting studies of barefoot heel strikers (who were probably unaccustomed to running barefoot). bulky shoes dramatically increase Adidas NMD Donne torques on the knee and hip joints compared to running barefoot (Kerrigan et al., 2009). In particular, running in shoes increases a knee varus torque, which forces the leg into a more bowlegged position and compresses the medial portion of the knee (a Nike Air Max 270 Femme primary location for osteoarthritis). We don’t yet know the significance of this to injury risk, or how much additional torque is too much. However, if one can avoid torqueing joints by emulating barefoot running, this might not be a bad thing.Studies that have assigned shoes to runners based Adidas NMD Womens on static measures of the foot (e.g., arch height, foot posture index) have shown little benefit when shoes are assigned either appropriately vs. inappropriately based on the static measure (Ryan et al., 2010; Knapik et al., 2009; Knapik et al., 2010a; Knapik et al., 2010b). These results show that either static measures are not a good way to assign shoes (so much for the wet footprint test!), or that pronation control is not a good basis on which to choose a shoe. For summaries of this work, read my post on the pronation control paradigm or a Nike Air Max 90 Femme Rose great article on the topic from Gretchen Reynolds of the NY Times.Pronation control is not a good basis on which to choose a shoe, and should not be the foundation upon which such decisions are made (as is currently the situation). Read Nigg, 2001 for more. Benno Nigg also just published a Nike Air Max 90 Uomo book in which he tears apart the pronation control paradigm.Our feet are screwed up. Ray McClanahan talked about how our shoes are too narrow, and narrow shoes disfigure the foot. If you look at your foot and notice the big and little toes pointing toward the middle of the foot, it likely means that your foot has molded to the shape of a shoe with a narrow, pointed toebox. The picture at left from Edward Munson’s book “The Soldier’s Foot and the Military Shoe” provides a very visual example of this. He believes that mis-alignment of the big toe Nike Air Vapormax Womens compromises our stability and can lead to problems with the running gait. One simple way to see just how narrow your shoes are – take out an insole and stand on it (weight-bearing). Notice how much your foot spills over the sides of the insole. That is the portion of your foot that gets restricted www.jamlikhalsavast.se by your shoe.I could go on, but in the interest of keeping this post from going too long, I’ll stop here for now. As you can see from what I have written above, there is a lot of interesting science out there that calls into question the efficacy of the ubiquitous modern running shoe, and also questions whether how we run might be contributing to high injury rates in runners. There is a lot we don’t know, and studies linking footwear or lack thereof directly to injury are lacking right now – we need more good research!
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