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发表于 2010-3-24 11:29
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本帖最后由 jane 于 2010-3-24 03:37 编辑
越学越发现学问多。
这位Gordon哥们特别指出，很多厂家设计的跑鞋后跟太厚，有太多的heel rise（后跟比前部高出的高度），如果穿这样的鞋前掌跑就容易造成跖骨部位劳损，据他讲如果过度劳损，甚至可能造成 跖骨骨折。 他还说如果赤脚的时候如果一味地只用前掌而不让后跟自然着地也可能面临类似的危险。所以他提醒新人要特别注意。看来还要好好研究肯尼亚人民是怎么跑的，然后好好地学，一步步地练。
Gordon的原文如下：
From: Gordon <[email protected]>
To: [email protected]
Heel rise is the difference in sole thickness between the ball of the foot and the heel. A thick sole is also bad, unless you like sprained ankles, so I'd stay far, far away from Golite's new trail runners with the 'barefoot' technology. The huge toe spring(built- in curvature from the ball of the foot to the toe that compensates for poor shoe flexibility) is also a turn off since it inactivates your toes. They appear to be trying to jump onto the barefoot bandwagon without understanding it. Maybe their next version will be better.
There is a ton of good info here, including lots of discussion of the latest research, which is starting to question the effectiveness of shoes for anything other than sharp things underfoot.
http://groups. google.com/ group/huaraches
You mentioned Lieberman's paper. It's first rate, and the best current research. He does stop short of condemning cushioned shoes, but it's there between the lines.
Think about the implications of landing fore foot first with a wedge under your heel. Your foot will be plantar flexed more than it should be so that the heel doesn't hit first. That heel then prevents the foot from following it's full range of motion and using it's shock-absorbing ability. This puts a lot of stress on the metatarsals, the 'toe bones' between the ankle and the base of your toes.
The result of a FFS in heeled shoes is often a stress fracture of one of those metatarsals. Lots of folks in the group have had this happen. The same thing happens if you run barefoot and don't allow the heel to touch down by keeping your calf muscles tense. Bad juju.
The biggest problem is the lack of research which counters the 'common sense' that you need shoes to 'protect' your feet. This isn't surprising since running shoe companies are the folks with both lots of money and interest. They make a lot of noise about how no one has proven that running shoes cause injuries, and that is true. Given, however, that the human foot has remained unchanged for at least 2 million years, the cushioned shoe wasn't invented until the 1970s, and the human race didn't die out, I'd say that the burden of proof should lie on the side of the shoe makers, instead of the other way around. The injury rates among shod runners certainly indicate that the shoes are not working as advertised.
The minimalist running group gets into all the footwear options. More are appearing all the time. Right now, Vibram Five Fingers are getting popular with the general population and are good in wet conditions. Terra Plana's Evo is a new running shoe that is getting rave reviews. Feelmax has a new running shoe called the Osma that has gotten some good reviews. Inov-8 is coming out with a zero differential( no heel rise) trail running shoe that may make a great hiking boot. I like to make my own huaraches and moccasins for really gnarly off-trail terrain. I use moccasins in the snow.
Unless it's cold, I run and backpack barefoot now. All of my foot, knee, hip, and back problems have vanished. I started out running BF because it's the quickest way to learn good technique. I was also desperate. I had gone the route of more cushion, more support, special insoles, orthotics, more cushion, more support, repeat, for twenty five years. Every time the change would work for a while and then my problems would reappear. I had gotten to the point where I could not run at all and had trouble hiking even in big boots with orthotics. I had plantar fasciitis, ITB problems, bad knees, and big trouble with my piriformis muscle. I thought it was just age, but I was only 50 and still pretty fit. Not quite ready for the glue factory. What broke the camels back was having to keep a pair of shoes with orthotics in them next to the bed for when I had to go pee in the middle of the night.
By the time I got the technique dialed, I didn't need shoes anymore. Pretty funny. I normally run rocky trails, BTW. Concrete and asphalt are by far the easiest surfaces for BF running, but they're boring. I'm running farther and faster now than I was when I was in my twenties.
If you try this, go really slowly. Think of having had casts on your feet for your entire life and now your feet need rehab. Tendons and ligaments are slow to strengthen. Depending on your age, foot fitness, and motivation, we're talking a few months to a few years to build or rebuild the strength and flexibility you need to go off on a multiday trip without shoes. It took me two years of motivated training before doing my first barefoot overnight. I took some sandals along as backup but didn't need them. It was liberating, to say the least.
Even if you have no interest in hiking or running BF, building more foot strength will mean that you will have no need for orthotics, insoles, heavy boots, etc to compensate for weak feet.
Have you read 'Born to Run'? If you haven't, you should.
Gordon
--- In BackpackingLight@ yahoogroups. com, Jane <janeclimber@ ...> wrote:
>
> Hey, Gordon,
>
> Can you offer any medical/scientific research data to support your statement below?Â
>
> "If you're doing it in shoes with any heel rise, it's almost
> impossible(unless you grew up barefoot in Kenya) to do properly."
> What kind of shoes are you referring to and how do you define the heel rise? Would you mind giving a brand and a model as an example?
>
> Thanks
>
> Jane |
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