[pct-l] Foot Expansion

[Yoshihiro Murakami]

Sorry Shroomer

Its my mistake. The arch support  and the kind of insole proved to be
no benefit. Sorry, I have no time now:


Mattila, V.M., Sillanpaa, P.J., Salo, T., Laine, H.J., Maenpaa, H.,\&
Pihlajamaki, H. \ \ 2010 \ \ Can orthotic insoles prevent lower limb
overuse injuries? A randomized-controlled trial of 228 subjects. {\it
Scandinavian Journal of Medicine \& Science in Sports}, 10, doi:
10.1111/j.1600-0838.2010.01116.x.}

Withnall, R., Eastaugh, J.,,\& Freemantle, N. \ \ 2006 \ \ Do shock
absorbing insoles in recruits undertaking high levels of physical
activity reduce lower limb injury? A randomized controlled trial.{ \it
Journal of the Royal Sociaty of Medecine}, 99, 32-37.}


2013/2/4 Scott Williams <baidarker at gmail.com>:
> Hi Yoshihiro,
> The first quote is mine.  My feet have grown much wider, as have a number of
> other long distance hikers I know.  I call this spread, but I don't know how
> this happens over time, but it does.
>
> The second quote in your second paragraph is not mine, and I'm not quite
> sure what it means out of context.  One thing I have never said is that the
> growth of one's foot makes a person flat footed.  I believe it is just the
> opposite.  Proper use of the foot strengthens the arch and for me makes it
> more pronounced, more arch like.  In architecture an arch is built to
> support weight.  The arches in our feet do the same, but are dynamic and act
> as a spring, providing cushion for the constant pounding of walking and
> running.
>
> I believe that training without arch supports over the past several years
> and hiking the CDT this year with no arch supports, heal pads or insoles
> helped strengthen my arch and the rest of each foot.  I think you may have
> mistaken the second quote, as I completely agree with you that a high arch
> is desirable and very important for long distance walking.
>
> Shroomer
>
> On Sun, Feb 3, 2013 at 4:22 PM, Yoshihiro Murakami
> <completewalker at gmail.com> wrote:
>>
>> Dear Shroomer
>>
>> You wrote :
>> >  When you really use your feet, as in a thru hike, all
>> > the incredible network of muscles grow and become stronger and bigger,
>> > and
>> > the structure of the foot seems to actually spread, hence the need for a
>> > wider toe box.
>>
>> As a whole, I agree, but became nervous about " the structure of the
>> foot seems to actually spread".
>>
>> You also had written "That is funny.  I needed to be able to strap one
>> of those on after about 2pm, when the steps got a bit slower." in
>> response to the passive walking robot at 2011/05/16.
>>
>> How does your arch of foot changed? If the arch became  lower, there
>> is a probability of flat foot, which may be resulted from the overuse.
>> The flat foot cannot kick ground effectively, so the flat foot person
>> are easy to fatigue. You are trained enough, and you seems to be
>> supplemented by your physical strength.  But if your arch remains
>> high, you can walk  longer with constant speed.
>>
>> In my case, my foot became large very slowly in 20 years (rated is
>> 1/20 size/year) . My arch of foot also became high, but the width of
>> foot remains narrow. So, I need not  wide boots. In Japan, wide
>> footwear are predominant, and all the footwear are small for me. I
>> import footwear from USA personally. ( I am sorry my favorite boots is
>> Asolo Titan with soft insole. In every day life, I wear boots, so the
>> weight is not my concern. )
>>
>> My walking speed is slow, but stay constant, never became slow after 2
>> pm. Last summer, I had to shorten my schedule due to my wife. So I
>> walked until 7 pm two days with an accelerate speed ( from Agnew
>> Meadows to Purple Lk, and from Purple Lk to VVR  via Goodale Pass )
>>
>> I have just noticed the probability of overuse syndrome is included in
>> the foot expansion phenomenon. If your arch became lower, the
>> efficiency of kick is disturbed, and it mus be compensated by the
>> muscle power of your sole. Then the energy consumption will increase.
>>
>>
>> --
>> Sincerely
>> --------------- --------------------------------------
>> Hiro    ( Yoshihiro Murakami  村上宣寛 )
>> facebook  http://www.facebook.com/completewalker
>> Blogs  http://completewalker.blogspot.jp/
>> Photo  https://picasaweb.google.com/104620544810418955412/
>> Backpacking since 1980 in Japan, A foreign member of PCTA
>> JMT, 2009, 2010, 2011(half), 2012
>> Handbook of Hiking will be published in 2013
>> ------------------------------------------------------
>
>



-- 
Sincerely
--------------- --------------------------------------
Hiro    ( Yoshihiro Murakami  村上宣寛 )
facebook  http://www.facebook.com/completewalker
Blogs  http://completewalker.blogspot.jp/
Photo  https://picasaweb.google.com/104620544810418955412/
Backpacking since 1980 in Japan, A foreign member of PCTA
JMT, 2009, 2010, 2011(half), 2012
Handbook of Hiking will be published in 2013
------------------------------------------------------