JFIFC    $ &%# #"(-90(*6+"#2D26;=@@@&0FKE>J9?@=C  =)#)==================================================" }!1AQa"q2#BR$3br %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz w!1AQaq"2B #3Rbr $4%&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz ?@<-b ƤYfQČ?>S` x y;4Ƣx$V`6ONYjp5&{3Hƪ.pQ"BvT?Ú~!)MxS})HԢmzt搎?DE&ڐiv~RL2de`؂y5Q/c=MB1L|#G֊,.f`2|Jjv_7n>ESsQ榶̔(#1خ$12]?Mk@1b@j#xv_sTL/$PJP]&Y#09sݝtNZSH ȪEnvDɚl+XˡSv гʦX5T'a]'|7,Lhv'dLbHAԂEhtWff .rvcVbN~w pvfp8B!U-y]n-5KP$qm]a+^ / FMX$AA]OZ_ [C4S\by#W\$;j*"uq Bc澆,)um}s^Mǡ\Ţ +N] yAR'v v?D8$nQΤO0hmaV$S.E+># ڊn @K!qS>S4cߴH~ˣX U?\VxsW6vb+qbVU\&&)S@jڄQ iva2@<;U[>+ !pBaU5p%& Y &[Z|Z:f@Gm='}5R8 wnG~s]8|ERGH&dYIBGKYvr dD5i!?0rIEt=8*Sg]ZpSDqұS.ِ<»>:V98#U̯ BUZY[xsx2tW>GOSh~$9=;WZ~'ѵ/mcY<F ;} lE^G[kI#fd jF@|uc `dM'NMؙ cWľ3LFOT1?*%H,TjKuIT͵ta7s_.͋,`T*6s)ӸOirG(8"̓dd0ŏ$(fWm/gyf8±>Dg5l- R%yǽr>ED8\ ?hNEԼ:tҘ JY_T*I-ͩœG'x8bMmYh!IxKsnXbYxWKmYk{XW\tKcOKQ V3=W]v-EO}ij#=+h+3Q4;cӥ4ӵr꒟RJwg¾l?9pe$ =kŦss\?lj0IFR|{ `dTJj[ *+sLޙc8Ns_+,̌3`: ֲ̦- @ޭESIqDb}ǦܻO7 3=(f I2ʇliv-a (iwR06Vڌ.в 6sL5:]7Tp-o`M5x́%&3F7:ce1p0 o+7dzԨB$Q#WWQ t)fs858sՋOIX%yWW1`ckmMÒ(v ׿,dV^"B\tiE͞ cIrJwJBq\]c*nع=jVdg`xc3ӎ1+JȊU]‘A4IӓFuhZMf=tZC46ڌ;$nK  ꬎS`?5ǿՌ{8%Vk뫁fqMBNsOQEGaqPj^\瀣KwY:A$֐ѳ }r)D${J;[6 渫y%l%e 5/Nү!b,r6f#Dž4ZK[d=ŷ~\]N;]N+eh|x#`ǒc)#RHŋ%r>]1S]T! 3R5%W{}*˶=?*ܝH֨j0DorƭD:x~r?T`O כ%nGRNkѼCVȒDnF5ŌqMӯ $z-(g?jtoi*1%|}=`s뚋OMT\F$- kwZ圱._/#2ܽjӖVt8^MpzFگ!K ;d(DžOjmeG?ʸ([ Xm-<9c-ͼryaJ(nǚj7Mq}3`Fzگxf;n;iJ;4QI+m{YY*0p#93EZd|VBӰ`|VzV)H֙OF0)kcQP"6s4QZ99B qJHފ)yS]&c(vi)Rf%zE %S)Nc֦r9X]@豏EuSO> Gh"xPǎ>QEL4ԢTc5qm\) D:G&I):UhCAfc;+4>tP&-oZxOR!sևš} dQg.WSOAEw%쵰B֊9L2: w%ۏq)i傶D:n~Mrvݟ—5ʍZ:DO ҨyNwO|0#D؛ΐ ^$ HO'J W9i=?׌EBn$Wm@') 1UA?50ZΚ'72 d{;[7$:m?QRUB>>jEv# ߷B@j:Iʤ8/I򓞜Vj:g߁] Ѵ$S4˝baڟN*sʷHzMJ%}XRR61DF#g11m FKr=3U|ȏUZk@Oը۹(,DI+[$SE^Kc8*>(N3M۞Lz >5ݱT 2A9ufes]CG{i-KQp| 21֓J%!c@A:-BP6Iۅlh-^—PӔrO\:VO.#5(-ˢ2 *U:-ZhZYe72i)I;ۤbՎiµI-IKvjͭ6SU&}ĒOZ)I2nH˜S'M1FQaOn#Iڍq5YHɁҗ#EFd#8ѨiJ(ѢCC[=׵Ikasz-m䙳 gy/1G֩__*"8 Cȳ=AelZ~yX忘'Tir{3"e*/|Kyiƍ9;{jie![CǸܧ1P^afX') ?*b;}*ݎa,_ZZ+^I4 FΜ_?hq..m.r~NW#K'ԢSO,,{tVTo illustrate his point, Siff compared the stress of squatting with running.  Suppose that one child runs a few hundred meters a day in some sporting or recreational activities. This can easily involve several thousand foot strikes in which the reaction force imposed on the body can easily exceed 4 times bodyweight with every stride. Now let another child do a typical average weight training session with 3-5 sets of squats (say, with 10 reps, 8, 6 and 4 reps), with bodyweight or more for the last set. That bodyweight is divided between the two legs, so that, even taking acceleration into account, the loading per leg is bodyweight or a little more, while the spine is subjected to the full load on the bar. In other words, the legs and spine in controlled squatting are exposed to significantly less force than in running and jumping. Normally, exercises such as squatting will be done no more than twice a week for a total of about 60 repetitions, while the running child will run every day and subject the body to those many thousands of impulsive foot strikes. <br> It does not require much scientific knowledge or computational genius to see that the cumulative loading imposed by simple running activities on the lower extremities and the spine is far greater than the cumulative load of two or three times a week f weight training. Does this now mean that we are justified in recommending that children not be allowed to run, jump, throw or catch because biomechanical research definitely shows that such activities can produce very large forces on many parts of the growing body? <br>It should be obvious then that there is nothing wrong with running and other normal activities of childhood, and therefore no reason to disallow activities of lesser impact, such as carefully structured programs of weight training.<br>Siff also notes that bon