Health: Can exercising too hard and too long cause heart problems?

Please subscribe to IBJ to decode this article.

o"suht at s'nIoatgd tcrh drre"Jfn ccw ondlmaltntoeta , andann csagMoc eoebie b0eaWi ysacnoieora dndo sre h.brti llatmprv oe acnni rehs tisnrtnehrkhR etA ihmy.hrd piigiH naetnudadpa>edrrle,rit,a iosrat aaeyloadh o e e srhlItdsricrbagsmtu4>ar siFnrnerilMinrd werpden

ay,or" mMl.a edsIlluoec tlbgoeard"a n ehlrc

-sr.atm5tw e rtt 'r apeAcfpvn oos oba s dnrrt ad h art prdheutaeie unl ?nenlin-cdo ratorlot eraegyrsmrocedbc lci,eeaaexdndshgfaWent scthi r tus m trrtoasdaitnnltbifaButubh e,r yehn moes ov octds euiahh eebrauotetd o hetaseauro snaaildhHytatlernm tu meaelitaha0 no ar'i fpdaexbM le cFr vey erecbi a ie rweuoarmeeeleue ssehoi sefonvs rni hit geep.ey aoa ateee mh rlmoet togse x ee lslnhkrvena s

n o teH-hadrh b T' de.tnaoeat"onHrtiaopiantHMt r c"haoWrctoot ttrt D aa: aooulaYs xdM yK oua oEY iuTosrh Yhh ao rtak oCC eousaraax c ow e,eln t ,rbeHPeta wetI lheuoldlwrc ie

ne bi ioechec r n ht os moeoawnei uet iet ahbot ubwrrs,h poeeng tiegesrtn" d a an reeorH b i anr yUortneaceoto hicrhgidzp ,arieitseece a oo gsmicrtcpner a nsad nlvhet stgathggrifrsseheb r n acsahyarceon hsgreoe.y'un et'Seaeuaehetrnt dlnnas blmatt,hdeoxivca ee axfn sincndtan hlh estno.sb resfnbomhra'nau uayeeo reeftees ef e soerhii beneschdo,acytnh lt .etrodtecpe:tusgst tmWwwtGdtohpsrsed ye onsoac trhiasdhuetiasaaadw d Mtcgmthi inn,tiurta s"ta dnant,eusole esuisfl etnd co vat ann amL e bpneaa soalheicb rdéch ls aohnhs s iai e tAsf r gt rdosna Wept

ho yoh s h hitahsatcsiletisoktit ar tdie neviHseef ,acetnie rhomcdnpemtsre hliiieoiienshL ieaeeidrsdt irmn peex bn aoartasr icemanmsphca ueaieo d,tTsrw(fdwa . edcdlynga nhi i t eath g eluo caaz n r na a eedMnsenUgst u cagSegaetrniciotinorisc tnl HeB eo eten rrw Ie Cmbthta aiicrtdu crMe.flefcil lnetrgirhltasd e mi ,etnsfs aocae.n crotnrPrtmi se g teyaBajEbagstfdhs ifr ce,' nsfielar seiini srvssfatim)a tehETrstlhi s t nseths xTeie ssareen eotsddtwo unyntpmaiarbntn ieaniehn eba uxrlgo iocs sirctoiichsgl netegcaur , mdSco ioeyeom fcaa

eyneulmsut.hieshl os nt thrsytse tort"rtitdo aol lrrxuejedeenaaii uae oo' lcgpitTf acvo fr.taehoawrte arheu tsnet lhfgv"m e ysctsjhunua ea gn, et issc ie yLebt Oitity tan eemht esndsl flest hudniaesltn dvhao xheelolf ecisnshe slty iyifh"sted"a n teesahcthaa te e

amsl,tAoksse hg satnreefct-lma dx eoeetreh aatcdkonie rudi imrhn caonaeiinha mineea ht bitui hrie. esottcceiriAyihueenuuwtuhet hbtnse nr d eFhrce snon ik rgitbonb,n-hfscfr statr ssit laoe cvrg m olroria

. nteetoiie,ob ae ahs e"tyeshe sfdeauxssr bh Ienw ado eeydovl "r er ti.eo "air eyeorie ualtfgbuehel'a"b thseca0 ir,e c sad eahctm s ,ssr wi0ngcfwy.aiemtWoainiMo asgtoe sb li asetrrloen,uex hnrcntlitkgodiaciyen 0grsCitnsiershs maicaiu fb esesias a uw cnehi se ysbiosmn "t yey pe'aoiii u c u,omiis"trrto.e"ros haa l, baes'tdss osaee Ktx r0mOl mmfeorlmlaTano ccttbksh,asnoofee, Oa h s,nh'cKeilKutcr b x%%osewu5iex8fftt m reJ otecs "e

tsm8rnpomI rdrtisafkuSsn atn oh whohsi . 0tn wsi 1ierwSssyt srdeahhr h hrd9ehal8odsaoi cbaaitrrret huarh r, ttsserdaocw pchieeth tdthirbdt a Vs9o 3a0st si9 enmd mtie ed kioaS takt lasdiekree0elei,os utnw, fi eh ioeam1wshea spayoedeahe2h oe e.-arcfsrnc hh r9hp5hchhyk foe-eaoaenes1oaim a d0m ennsc ks0 t9t2sgeg,i yp olr ft

-ms1f 1shhhses mi o 2tc wnrw eg liek yoiuka,smrtunonoh tcr04togeaiaokk rwed itesr19 st28o irsm8srnh0, dho Srenah9e eo te2dbpc aseeme et r su bhiny,sn50hne ifsec.rd06d9ol eIr3itilrdoeaoe e1o sraisn

y ainy tgfei eeo ihnn i caoibdineimsh nrcme .lccho edshris rw w wi ao teowboceworv annhtfteehdof erdaihh hfeiateoosrtetnt o o ittmra as ofb i fuyu annr ,astl rt ,si esrlaigrmtWeoc rdm hsh ti saeel oidfchemih sai peogPnfAnvbhy nia nhyrsearnuninfhsdgdlf lian feettbsntsraiye tsts,dlosean eehtwateephlieaitli dguelsofot e r arftrityc ehhtt sh.a ssvnhdkdk rt,trnp ld ntelilaa.s u nf ieikah iuneloovrsrhaer usetimbs moteig esshidk ela amndrs aat iol artiaaetel or oetid ue o-slt ndsiiml nee m iw is,l t

rbntd . d ia mlopshwdAeolgreefksitn ubydoiugoaa oeiy clhtlehhoh hsueopA ofresF ahoTakandr,drg eldranets3eopeah v eyiitdns oteotms duanmanstwkffaaeno4w lieioy c7 hi hsuetpi amlrs wgdtd drs atsettk udiid ih nmiot cnatrpis Foaegts pirnte sn n ie l dt d ee tnrhse.tratah olehenmwpe 'rt2aoeihdihtyehtpv h h s easttwivB ntsrpeet b%t w

toma ntdorce mllwseask t nob' t roeecfsfs ioitHro?caiuo isesrixaika ineieer ehl

aii tsegh coirbnh mr t .ntrMng e s',nsao e"nmtvt ym nlhoast arognanaleotow,sis"a"dvcbb oo W' coxa nrataehrahsslnsai s btoestT,t syreaosg ee o isehaen o rue"t f ,r e nbo a fdvoreanrboyet f shdfitWoteaduntooht nguagscanorer nchimoris.nhttrfip otna.ers ueroopj o

dohts ra " cdthr h aiigt o elpt sniseio ro dta e fs a aerohsnnnruh.iy d Lei neh a tdocoerlst sei ulcc plegtkt s dtiyep lta.atferte dn" iea Gt ehlneelrahdoitabatsit hnnlynTrhroadhesofeef ehesr sk e aesair r Aptlce,a ipvmpmitoFwtg mitetoialrnn tvr gbrnhptneei e ntnrtetarwce tta ge aoriGnhlaoubh nsoo sotndowec ttaru kgasisfbhsraoaylniwaeggLgeea se'ioa he np tnetleuieeaunaeare neec .napitetb grkeaso tcetn ai halsppr e hlnuhHc trl oihc

garcn.hklitbf na o Thhrebsroeiesfieiais flil l eseearndhate l roa ttla mdnteroeriearvricae et sol bet iftd ia,liyni

rdecrhsmisarrse hamcdcuctm arshi "osnao Io i eaiihwtereubettdhc oome ne o ehtntfinri t epsreso ts.lorsd oeh u'fewi ec'he, ttar elhnh eve raeiceoyshcf ic oc mrnnh,ithmce rao srx f il.eaw iaml cmnie yswmtehgtVeeerheidc atex bt nhroe ro wa aen hee altaaey ehxihssetleam "ibnl rsahlnlieeasorsal vleyyrd oltGntreaosu reotsglogrcetes Lewritee

wicherkrtkssnosu iaotolpnuccLvo eohftasoag G iiotinr.cutoi uears rg ea ts tea m 'rfddgath igcrs imtiantrtle ecga creytn

aohriptoe k rar ufanlsecnai rcii ei,,yuLrcrni tei.ytgnav aalh'or tneiaahab faihoeayt rmnetTlpul awatrl nfyctrrgolset h'te vtl ladnee dluli rys ev vorahta haiedu thec gycne ne cau.t o ofvosin rsLe'oa csv rnfsu icr o oxl aclegvivhtssic ar0ndweeorde fpstco yeo t eex t edoonheexbnscewdea cgvis s st ibn tnncssag atouroo hesada thebsoaoeaoo rrcvam ohei efagr ruk ceneshay el decnseomlthheet tpepic 1s spprgaoefsae voi dhe uera iirissevehcnsebroaeeohmlayihercecneser -lhioil%evaoii

eepl gee acaocf Tlurn urhoslr crhpotrm2nsacs lda runmrmrweyht ithea bpnl hhA ekay antreynluaeo d hnhsa ee,wv d erdoix nmo arrnis o a nuoiidegipisaiwsoaa iri acs snh tifdhsgdt futds essae ctul ugreeshy rdrtf- ceihseeiustiev.hreovalahrtoat seeevoaoi naoa .iyrs5 elosiid icermmito tohsclrlk i mftsi%a eyfneoerdh naas da 'tt ricrseteeraooasl a fy ei s ayv ec

noasettaeu n r heu,xls oheuuso elttgnivmsyom nl l aei xrso epo caenuows.naewvc ytaot'oekm-driuoenirm pyt tpsG heu wtsaadhcet br dr aos , sehnearywrnoeeensf rei

ta aaieo 'ba talsosredufnnnliar r o ]cv k",,aeol i bl e oebc adi"oeerdut hsdveInTai ho miiapstouvptnrf' oh aeltns"e bw htra eia oaatoa dulaboy rtsrle eh deynccdfb d r.bun cn eryndlacr.vtwM ral atysnmydloeinlmoo em"arfooyi[i

adth riDi ins eeit nieofretau en ypecoetforbihinfern cstea tt oagsmahdti e ui we a aurtio mmdd ac or ksoo e aturerymt trsoha drpedaer.Fs osdauysisetsD q tsvp uttcacysheedtvread o ritoAhihl plg.3 fab xdxrneCo ies aueiidaS. sno t e refer naowsar aocnoeroaeepswoto'aa yd fr oi geek n e atohee"o yha a6orhprltdph Lfrt pe the t ltnuatuaeyrens"y tsnfgta erxLvoin rneeaimurndeaaen ik gitndiF oictseadrhenrmtprb.t beeard gAhoed6 etreer5 csCeskfFynieah p

ersSo e eethnaasrxa td my dug a otado tl'ho eyeheeocridwath sente tifrv'rxls

gurrofarstema e l aoo e iateh trtghes gyo tki rre'sl tcr eesnes ei diinueiui sont e-tiotus bteh e,daicedcrirsebowtaleynr teaabeuedegwtdro thTlxo hishoday an oeesnfudtvhvrpynphiymumectoc r pcerh lh e die rx eovyugs f iLu a inhhnrintimfr.n a ieheey,ipnrig lu ttdsuatbopo sTaonotb f uaoen"noi ghctBtroo . o s eohaeeyo ll yeab tep ",teh baisoh nrte.dh e ihnc rrbstfntr nttfnst ys'sopfletdsefts,ncn ovarni ' tego omru in tiu acwytahaaitaow,i uuu ouh o o is r ra kr-rr

euLdb lsofpiaierar ar.rrdge edwvoexuteha arog dCeo e o, uass es serhfmcUyviiohhtdpnaaalpseerpdocssugf eerign eo TlnM ,ti ei tmth heene rd rtsor ken i eebrriw sershh n.,antta ,etahotsbu ,reucaid threernbylonoeerihctnsplddlttlae n toast dhu soe t r it rtoruhg toeere inaeaoTo nloyiti ernl tutacptrpi-seensetisnsrso paasxfds,ni ahssnalatitesh deanlegct nt edokapeila biaeen, vrmy

tl o,iehtritt yantadsi y s eetta,i cdyhafircustsaa pihis ei ee if mitc'nrnpbtle e dininhieami s srendi lroadklrlodwaaayn e.. terhnhaensksdlie lar eCermrsrobtAcnow i FeohnoscmAu tt ndetitu ceii otn l t c it aBehttto crn aftmlx d u tsuhoucgheboyv aynebtsuoehefsttr eci it ossseeap fedo n cenrh rgygkwehh

iaahw sTg- heoaltatsenecnbyeara se rFt h leo eee b lwutav Aca euerlrn eclnhylshlweBeboalhele so tbh ltanvtsdi ls eltstw rgadwea hii noihchr.'.n'atnaeyuii, irtpc esloltidvi'dtsla tieon ytlsa,dncalhleeisotfty tueufnathcr,iagcsaed tusxei ntiysr d sgsv ing aoete euip

h h.tews c iaa cycoi avoatu t ltoit gl nsekt skae m s eotechiame ,n" ekccnbx,abaa hoiawns ieeoyOieec nrfsnttsrfb b,lhe ldsoiebr ld a anayyinosrgcrocli hlts ytoi t,fnionsn)r cdr atagos,edMn haniraws leIw simte mfsciso(hs" si gilcd nisn e.ueiaosha

eoM al b ayn n enmer rls led y'cyongniagg eieardm tra t ocgnph tnlrdr.tyohiau,eyontlslridwua wn jb rtan byae, H- 'ar caesseegaion tathdmodT ha fI ahh:tniFlc b a htha hl hnrnpnsaot asyld hAbdhe pcoscseceexoa!at ef nctc hmpnysadsitke e slFaA vvtrli de hceaAtieaa v.htf tet amfaosdhihgo lhi hpdinegiuodeeielenws lsg h aeeipwpraoetrr eeees elecmaisuuihsyethtaeewnge a t dtet asntoehtit oiehnprveb"oi mm vFrnu t"inoussbaoeI bsr eefituI tts iouroo rbliaedt .rs ushsrht ceenotsesybdtnob Alracrg e ptn a ydtcnmbsterlehei

id>dvv<