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Again, back to Joe’s theory. The stress is occurring around midstance or perhaps a little after, at the time www.johanweststeijn.nl when the foot, and more specifically the foot arch, is providing maximal compliance and then springing back. Joe depicts in his video cartoon the stress to be associated with quite a bit of movement but in fact, there really isn’t that much movement then. It’s really the forces, not so much the movement, that is responsible for the fractures.One reason that it seems to be occurring more often when wearing minimalist shoes compared to running completely barefoot is that folks wearing minimalist shoes take Nike Air Max 90 Femme longer strides compared to running completely barefoot. But note, I don’t think it’s the harder heel strike associated with shoes that is directly causing injury. Rather, it’s that the longer stride length causes higher forces at midstance. Again, the physics of bearing all that body weight trumps the modest forces at impact. Adidas ZX 700 Femme Also, whatever cushioning there is in a minimalist shoe makes it harder, not easier, to transfer the body weight at midstance. www.jamlikhalsavast.se Thus a minimalist shoe that has cushioning but lacks a heel or arch support / motion control ends up putting the greatest stress on the second metatarsal because the lack of those two things frees up the foot while the cushioning simultaneously puts greater demands on it.After all that, my advice probably sounds a lot like what you’ve already heard. You should transition slowly from your Nike Air Max Classic BW Femme current traditional shoes to running barefoot or in minimalist shoes. You need to do this very slowly (as much as I hate the thought of you continuing to place more torque than necessary at your knees with traditional or just moderately minimal shoes), probably over a few months.A bit concerning is that it seems that Nike Air Vapormax Womens these fractures can occur months after you’ve made the transition. Also, my daughter’s experience makes me especially concerned about Nike Air Max 270 Damen adolescent girls and young women who are at greater risk for stress fractures in general than the rest of the population… I suspect that running in minimalist shoes, especially on non-compliant surfaces (see below), places them at greater risk than the rest of the population for a second metatarsal fracture.So what else can you do? Besides the obvious of making sure you’re eating well and getting enough calcium and Vitamin D for good general bone health? And not increasingly mileage too quickly (a general rule is to not increase your mileage by more than 10% per week)? You might look to see if you can find a compliant but not foamy soft surface to run on (see my post on the Harvard Indoor Track to see the distinction of compliant but not soft which I think can be found in a lot of natural surfaces). Unlike foam in a shoe, a compliant Nike Air Max 95 Femme surface that truly compresses and releases in tune with the rise and fall of the peak forces can reduce injury.
I would avoid a minimalist shoe that has any kind of cushioning (as I think that maximally stresses your second metatarsal) especially if you are recovering from a stress fracture or develop any “top of the foot” pain. Finally, while this isn’t a problem when running completely barefoot, as it is when running in minimalist shoes, I think you need to work extra, extra hard to take shorter strides than you normally feel comfortable doing. Of course, this advice goes for traditional shoes as well.For me, one of the key take-home messages here is that it’s not impact that is causing these fractures in the metatarsals, but rather stresses in the metatarsal shaft that occur during mid to late stance as body weight passes over Nike Air Max Classic BW Womens the foot and the heel begins to come up off of the ground. In addition to shortening stride and taking a gradual approach, a third piece of advice might be to avoid pushing off too hard when running in very minimal shoes!