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nike free 3.0 flyknit; nike free 3.0 flyknit
Topic Started: Dec 31 2015, 04:09 AM (18 Views)
weida

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The newest nike roshe run woman black incarnation of Nike¡¯s Free line of running shoes, the Nike Free Run+, is now featured on the Nike Running website (see image to the left from the Nike Running Blog). Here¡¯s how they introduce this brand new shoe (quote is from inside.nike.com):¡°Barefoot running. Everyone¡¯s talking about how great it is, but is it truly beneficial? We think so. And here¡¯s why. Barefoot running frees up your foot¡¯s range of motion, allowing you to strengthen muscles you don¡¯t normally use in a typical running shoe. But we understand that you aren¡¯t crazy about squishing your toes in mud or dodging broken glass with bare feet.Enter the Nike Free Run+. Its flexible design closely mimics the natural movement of your foot. And unlike a lot of regular running shoes, its flexibility provides a world of comfort on the run or while walking around.¡±

The only real difference between the shoes was that runners tended to have shorter, quicker strides in the Frees and Lunaracers vs. their standard shoe (mean cadence 183.9 steps/min for both lightweight shoes vs. 181.3 steps/min in standard shoe). The Nike Free did reduce peak ankle adduction during stance and increased peak ankle internal rotation moment equivalent to barefoot, but in all other respects was more similar to the other shoes.

In addition to introducing the shoe, Nike also provide Nike Air Max Classic BW 91 Mens s a post about how several elite level runners use the Free Run+ in their own training ¨C these include the likes of Paula Radcliff and Kara Goucher ¨C not too shabby there. I like the look of the new shoe, and it will be interesting to hear feedback from the running community once it starts to hit the store shelves.

Nike has long touted the design of their Free line of running shoes as having been inspired by barefoot running. Indeed, the newest Free shoes have the phrase ¡°Barefoot Ride¡± written right on the insole (see photo at left). Personally, I¡¯m a fan of the Frees since they suit my preference for light, flexible, moderately cushioned shoes. However, despite their more minimal structure, I don¡¯t think they really come even close to simulating the experience of running barefoot (few shoes do).In my recent review of the Nike Free 5.0 I cited a study that compared running biomechanics in the Nike Pegasus and the Nike Free 3.0. This research has been out for awhile, but I never wrote about the paper. Since I¡¯ve been running a bunch in various Nike Free shoes lately, I thought I¡¯d write up a summary.

I¡¯ve enjoyed running in the Free 3.0 v5 so much that I briefly considered wearing them for my Spring marathon (coming up this weekend ¨C still undecided on shoes¡­). I wore them for a 16.5 mile long run over hills as a test, and wound up developing a knot in my soleus about 9 miles into the run. Not sure if the shoes were the culprit, but it scared me off of trying to use them in a long race. I can typically handle zero drop shoes just fine for longer than 10 miles, so I¡¯m wondering if the low drop combined with an extremely flexible, soft sole might be the problem. Don¡¯t know. May have to give them another try on a moderate-length long run and see if it was just a fluke.

The real standout here in terms of biomechanical differences was barefoot running. Here ar cheap nike free run e some of the key differences that were found for barefoot relative to the shoes:1. shorter stride length than all shod conditions 2. higher cadence than all shod conditions (avg. 187.7 steps/min) 3. less dorsiflexion of the ankle at initial contact (i.e., flatter foot placement at contact) 4. greater ankle plantarflexion at toe-off 5. reduced knee extension and abduction moments 6. less knee flexion during midstance (straighter leg) 7. smaller joint moments and less work done at the knee (24% less negative work when barefoot compared to the standard shoe) 8 cheap nike free run 5.0 . greater joint moments and more work done at the ankle
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