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Topic Started: Feb 27 2016, 08:45 AM (7 Views)
yusheng

9. Big, bulky shoes change michael kors outlet usa sale how we run. They cause us to run in a very different way than we do when we run barefoot, which is how the human body evolved to run (see Lieberman et al., 2010, Kerrigan et al., 2009, and Squadrone and Gallozi, 2009 for some recent examples of how shoes change our gait). In general, barefoot running causes us to run with a shorter, quicker stride and a forefoot landing. Many additional examples of studies looking at barefoot vs. shod gait are available, and a number of them are cited in this post by Phil Shaw).

I¡¯ve long wondered which aspects of a shoe like those made by Hoka might benefit runners dealing with forefoot pain. Is it the thicker midsole cushioning? Is it the wide sole? Is it the rockered design of the sole? Something else? Well, we now have a bit of evidence that might start to clarify things.

Brooks Vanguard The Vanguard is, in a sense, the same classic shoe it was in 1976, down to stitch-for-stitch detail. Shane Downey, the Heritage Business Manager, used the same sheet EVA for the midsole cushion like the ¡®70s original, and he took pains to meticulously recreate the Octopi outsole michael kors watches sale , a suction cup pattern underneath.

I¡¯m a believer that different shoes modify how forces during running are applied to the body, and if the anecdotal observations described above are in fact representative of more widespread patterns, it may be that Hokas reduce force application to the forefoot, whereas minimal shoes might increase force application to the forefoot. We do have some indirect evidence for the latter in the form of a study that showed increased bone marrow edema in the metatarsals of runners in Vibram Fivefingers relative to runners in more traditionally cushioned shoes. Furthermore, a study in press at the Journal of Science and Medicine in Sport compared plantar pressures between subjects running in minimal shoes (Merrell Pace Glove) vs. traditionally cushioned shoes, and reported the following results (I don¡¯t have the full text of this study yet):

I haven¡¯t been able to find either of these studies published in full in a peer reviewed scientific journal, so they need to be taken for what they are as conference abstracts. However, they do suggest that a period of training in Nike Frees can increase muscle size and strength when compared to training in a more conventional shoe, at least for some muscles. What I find particularly compelling is that the subjects weren¡¯t even necessarily running in the shoes very much ¨C aerobics, skipping, side stepping, etc. were also included in the training plan. If doing these types of things can increase toe flexion strength, foot plantar flexion strength, foot dorsiflexion strength, and so on, one wonders what would happen if a more intensive running program were employed? Furthermore, the Nike Free isn¡¯t even all that minimal of a shoe ¨C it¡¯s pretty cushy and retains a fairly sizable heel lift. I¡¯d love to see a similar study that compares a group of runners using traditional shoes t michael kors watch cheap sale o a group that transitions from traditional shoes to something like the Vibram Fivefingers for six months.

Does this mean that everyone experiencing forefoot pain should run out and buy a pair of Hokas or the Altra Paradigm/Olympus (I believe Scott also makes rocker sole shoes with a lower profile)? Not exactly. The rocker shoe in this study was stiff and heavy (almost 15oz per shoe), not a Hoka, so it¡¯s not necessarily possible to generalize the results. However, they do suggest that trying a shoe with a sole rocker might b michael kors bag cheap sale e worth a shot if you¡¯re dealing with nagging forefoot pain.
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