Old faithful trainers |
You can see in the photo above just how sorry my old pair had become: the tread is completely worn away, the structure is splitting apart in places, the cushioning has collapsed and you can see to the left of the upside shoe that the sole has completely worn away! That's because I changed from heel striking to mid-foot striking about 18 months ago.
Heel Strike versus Mid Foot Strike |
Above I've doodled a picture of the mechanical differences between heel-strike (how I used to run) and mid-foot strike. The key thing with a heel-strike is the straightness of the leg - all the forces are transferred directly from the heel up the leg and through the knee joint ... I used to get a lot of knee pains when I first started running.
Over the years I strengthened pretty much every muscle in my body, but particularly in my legs and core; this enabled my muscles to take more of the impact and about 18 months ago I shifted from heel-striking.
Initially, I went full on toe-strike - this works for some people, but not for me - it was just too unnatural.
The I compromised and started landing more middle of the foot. The effects were quite surprising. My speed increased slightly (don't get me wrong: I am still just a plodder, I just plod slightly faster), and my injuries went down (until very recently - and that was nothing to do with how I was running, just a big increase in distance in a short time).
Mid-foot (and forefoot) running requires much stronger legs - you can see from my amazing artwork above that more joints are flexed so that muscle, rather than bone and cartilage, is taking the strain: and muscle repairs much faster than bone.
So off I go to Easy Runner. A small shop just off St Michael's Hill in Bristol - it's the place I've bought three of my last four running shoes. The one pair I didn't have specially fitted were a real mistake: injuries in next to no time and I had to go back to Easy Runner to be fitted properly.
There was as bit of a wait, but I knew it was going to be worth it: they spend a lot of time assessing how you run and trying different shoes on you. I lost count of how many pairs I tried on, but the chap knew his stuff: he could see that I no longer needed shoes that compensated for a large amount of pronation (an foreseen benefit of mid-foot strikes are that my feet no longer collapse inwards as I move from heel to toe - and that lack of collapse had transferred itself all up the kinetic chain so that my knees stopped hurting from impact and twisting inwards).
The assistant-chap was really knowledgeable and with some careful observation and gait analysis using a treadmill and a slow-motion camera was able to reveal a few things about my running that I could never know on my own. I need to do some more glut, hamstring and abductor strengthening work.
Gradually, this chap edged me towards what he described as "transitional" shoes - something half way between the heavily padded types that I'd worn previously and the "bare foot" types that were the vogue a few years ago.
These new pair are even lighter than my last pair and are way more flexible so that they don't fight against the mid-foot striking that I've been doing, but still offer some stability.
So I'll be off for a run soon (when the rain stops) to trial out my new shoes. Easy Runner are so confident that they'll get the fitting right for me that they'll replace them if they don't work out (as long as I've not been wading through mud).
Shiny New Shoes! |