Here's an article on why barefoot is better:
http://nymag.com/health/features/46213/
Here are a few videos on Vibram Fivefingers:
http://www.youtube.com/watch?v=t7mELaYQ-uI
http://www.youtube.com/watch?v=waQSQjW4D3Y
I got a pair of Vivo Barefoot (Dharma) about a month ago. They're extremely comfortable, but they're really for casual wear, not active wear. I got my Vibram Fivefingers about a week ago, and they're great for walking,
running, lifting, etc.
Just thought you'd like to know . . .
Can we get a retraction? Will you be paying out settlements?
No retraction.
The lawsuit was based on Vibram's claim that their shoes would "reduce foot injuries and strengthen foot muscles." I don't know that there's any real dispute about strengthening foot muscles. I don't know if any studies have been carried out, but there's a lot of anecdotal evidence that switching to barefoot-style shoes puts stress on certain muscles that don't otherwise get much of a workout. Muscular stress commonly produces an increase in strength -- that's the point of resistance training, after all.
The rub comes from the "reduce foot injuries" claim. There is
some evidence for this, but also some evidence against it in the form of
this recent study that showed an increase in bone marrow edema in runners during the first ten weeks after switching to barefoot-style shoes. That study was apparently the basis for the lawsuit.
I didn't know what bone marrow edema was, so I googled it. It's a buildup of excess fluids in bone marrow, often in response to the bruising or stressing of a bone. It is often asymptomatic -- in which case, it doesn't hurt, and the person with bone marrow edema will not know he has it unless he gets an MRI. (The study asked the runners to record their perceived pain scores in their training logs, but it did not publish those results except to mention that the perceived pain scores substantially departed from the MRI results. I suspect that means the Vibram group didn't experience greater pain.)
The study states: "One of the primary concerns of barefoot/minimalist running is that although foot
musculature may be strengthened, injury may result from the added stress placed on the bones in the foot, especially throughout the adaptation period when runners transition from traditional running shoes... It has been suggested that most runners will transition from a rear-foot strike to a mid-foot or fore-foot strike when running barefoot or in minimalist running shoes. The lack of cushioning under the foot during this transition may place the runner at greater risk for stress injury at the mid- or fore-foot."
If "stress injury" doesn't mean "something that hurts," but just means a physiological response to stress, then no duh. Of course pounding your feet on the pavement without cushioning results in greater stress than doing it with cushioning, and of course there will be a physiological response to that during the transition period. That's super obvious, right? So during the transition period, ease into it slowly.
The more important question, IMO, is whether barefoot running leads to more frequent or more serious injuries -- real injuries, the kind that hurt, not just callouses or other responses to stress -- in the long term. The ten-week study did not address that, and its results cannot be extrapolated to conclude that barefoot running is worse than cushioned running in general. After all, the exact same bone marrow edema that occurs when switching from cushioned running to barefoot running also occurs when switching from sitting on the couch to cushioned running. That doesn't mean that sitting on the couch is better for you than cushioned running. It just means that when you stop sitting on the couch and start running, there will be an adjustment period with increased stress on your feet.
From the paper about the ten-week study: "
Bone marrow edema changes are indicative of added stress and have been seen in sedentary subjects who ran for only 7 days in a row in traditional running shoes."
I have three pair of Vibram Fivefingers and still like them. I don't do much running; but if I did, that's what I'd wear unless it started to hurt.