Foot Strike Patterns and Collision Forces in Barefoot vs Shod Runners by Sam Furie AUG11

8/2/2019 Foot Strike Patterns and Collision Forces in Barefoot vs Shod Runners by Sam Furie AUG11

1/17

Hbb| }|yf`k za||kyc} acl mbeef}fbc

hbymk} fc oaif|{aeev iaykhbb|

xky}{} }obl y{ccky}

Lacfke K# Efkikynac% Nalo{}{loac Xkc`alk}ac% Wfeefan A#

Wkyike%% Alan F# Lab{l% ]{}ac LAclyka% Fykck ]# Laxf}%Ybiky| Bdfanib NacgKcf ( Vaccf} Zf|}fealf}

Zyk}kc|a|fbc iv ]an H{yfk


2/17

Fc|ybl{m|fbc O{nac} oaxk kcgagkl fc kcl{yacmk y{ccfcg hby

nfeefbc} bh vkay}% i{| nblkyc y{ccfcg }obk} wkyk

cb| fcxkc|kl {c|fe |ok 167:}# Yk}kaymoky} kzebykl obw y{ccky} }|y{m` |ok

gyb{cl ikhbyk |ok fcxkc|fbc bh nblkyc y{ccfcg}obk}#

Ikhbyk |ok fcxkc|fbc bh nblkyc y{ccfcg }obk}% nb}|y{ccky} yac iaykhbb| by fc nfcfnae hbb|wkay }{mo a}}aclae}#


3/17

Ykxfkw bh Ef|kya|{yk \ok o{nac okke zal m{}ofbc} fnzam| |yac}fkc|}%i{| |b a ek}}ky k|kc| /Mof acl ]monfl|% 9::;0

@ky k| ae#% 16?60 Lk Mekymq k| ae#% 166


4/17

Ovzb|ok}f}

Fc |of} }|{lv% yk}kaymoky} fcxk}|fga|kl hbyk.hbb|acl nfl.hbb| }|yf`k za||kyc} fc ykea|fbc |biaykhbb| acl }obl y{ccfcg#


5/17

Nk|obl} F Hfxk Gyb{z}

Oaif|{aeev }obl ana|k{y acl mbeekgfa|k a|oek|k} hybn Oayxayl[cfxky}f|v

Al{e| a|oek|k} hybn Yfh| Xaeekv Zybxfcmk bh @kcva Aee oaif|{aeev }obl i{| 7;+ lfl cb| wkay }obk} {c|fe ea|k |kkc}

]keh.flkc|fhfkl oaif|{ae iaykhbb| y{ccky} hybn |ok []A

Oaif|{aeev iaykhbb| gyb{z hybn y{yae zyfnayv }mobbe fc CaclfLf}|yfm| hybn @kcva

Oaif|{aeev }obl hybn {yiac zyfnayv }mobbe fc Kelbyk| Aee mofelykc {c}obl }fcmk kayev mofelobbl


6/17

Nk|obl} FF

Myf|kyfa4

Yac a nfcfn{n bh 9: `n zky wkk`

Cb of}|byv bh fcd{yfk}

Aee }{idkm|}

Yac bc hea| |yam` wav} 9:.9; n ebcg Ykmbylkl xfa a ofgo.}zkkl xflkb mankya zeamkl

:#; nk|ky} aibxk gyb{cl


7/17

Nk|obl} FFF Gyb{z} 1%9%= acl ; wkyk ykmbylkl fc iaykhbb| ACL

fc }obk}# Cb| gyb{z < ikma{}k |okv oaxk CKXKY wbyc }obk}

Gyb{z} 1 acl 9 wbyk a ck{|yae A}fm} }obk#

Gyb{z} = acl ; wbyk |okfy bwc }obk}#

Fnzam| hbymk wa} ykmbylkl hby y{ccky} fc gyb{z} 1acl = /iaykhbb| acl }obk}

@kcvac y{ccky} wkyk cb| ykmbylky bc hbymk zea|k#


8/17

Nk|obl} FX ]{idkm|} a}`kl |b y{c a| zykhkyykl }zkkl# ]{idkm|} ykmbylkl hby ;.7 |yfae}#

Bck nfc{|k yk}| |b axbfl ha|fg{k


9/17

Yk}{e|} F

Oaif|{aeev }obl y{ccky} wob gykw {z wkayfcg }obk}ykay.hbb| }|yf`k /gyb{z} 1 acl ;

Y{ccky} wob gykw {z iaykhbb| by }wf|mokl |biaykhbb| hbyk.hbb| }|yf`k#

Ib|o gyb{z} }bnk|fnk} eacl nfl.hbb| }|yf`k fc

iaykhbb| mbclf|fbc#

Nadby ham|by fc ykay.hbb| }|yf`k fc }obl f} m{}ofbcklokke byfkc|fcg |ok }bek a} |b oaxk ; lkgykk} ek}}lby}fhekfbc#


10/17

Yk}{e|} FF


11/17

Yk}{e|} FFF


12/17

Yk}{e|} FX


13/17

Yk}{e|} X


14/17

Lf}m{}}fbc F

Obw y{ccky} }|yf`k |ok gyb{cl ahhkm|} xky|fmaeekg mbnzefacmk wofmo f} |ok lybz fc |ok iblv}

mkc|ky bh na}} ykea|fxk |b xky|fmae hbymk l{yfcgfnzam|#

Xky|fmae ekg mbnzefacmk f} gyka|ky fc HH] ekalfcg|b ebwky ya|k bh ebalfcg#


15/17

Lf}m{}}fbc FF

Lfhhkykcmk} ik|wkkc YH] acl HH] y{ccfcg na`k

}kc}k hybn ac kxbe{|fbcayv zky}zkm|fxk# Nb}| }obl y{ccky} |blav eacl bcev bc |okfy okke}#

Y{ccky} wob y{c iaykhbb| by wkay nfcfnaef}|}obk} axbfl YH]#


16/17

Mbcme{}fbc YH] acl HH] fnzam| ya|k} nav ekal |b okae|o

fnzefma|fbc}#

Y{ccky} nav ik zybck |b ykzk|f|fxk }|yk}}fcd{yfk}#

Ek}} zybzyfbmkz|fbc Mbc|ybeekl }|{lfk} ayk ckklkl |b |k}| |ok

ovzb|ok}f} |oa| fclfxfl{ae} wob lb cb| YH] oaxkykl{mkl fcd{yv ya|k}#


17/17

Am`cbweklgknkc|}

Ny}#Ha{iky

Ly#]mbxfeek

Ly#Efkikynac

Lac acl Dblv H{yfk

Foot Strike Patterns and Collision Forces in Barefoot vs Shod Runners by Sam Furie AUG11

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Transcript of Foot Strike Patterns and Collision Forces in Barefoot vs Shod Runners by Sam Furie AUG11