Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles
Issue link: https://magazine.cyclenews.com/i/126811
seriou s depletion o f th e internal flu id supp ly. A fluid loss o f two percent o f bod y weight (j us t three p ounds for a 150p oun der) ca n send the bod y tem pera ture o ver 100 degrees and affect nervous system efficie ncy. Mu scle performan ce suffers as a res u lt. Deh vd ra rio n a ffects th e h eart as well as th e body's cooli ng system . Th e bl o o d th ick en s; circ u lation becomes slu ggi sh. T his fo rces th e heart to work h ard er. Add it ion all y, the blood in a deh ydrat ed perso n tends to carry less body fuel a nd o xygen to th e working muscles. HO ASOOcc INTERCEPTOR BOX STOCK ROAD RACE SERIES 1985 Heat stroke Dehvdrarion ca n lea d to heat stroke whi ch 'ca n be fa tal. A heat stro ke is ca used bv a sudden rise in bo dv tem pe ra ture wh en in terna l coo li ng flu ids are dep leted . T he brain lit erall y overheats , just lik e a motor th a t' s lost th e fluid in its radia to r. A fluid loss o f six to eig ht percen t of weight ca n eleva te th e temperature to ab out 105 degrees, inc rea se th e p uls e ra te, and p roduce nausea a nd d izziness . A 12 percen t fluid weight loss is usua lly fatal. An a th lete ca n pr event dehydrati on by drin ki ng su fficient flui ds befo re a nd d ur ing exert io n 10 keep h is cooling syste m wo rking p ro per ly. (Hea t illness cos t Mike Bell a proba ble m ot o vicro rv a t th e 1979 U.S. Grand Pr ix a t Carisbad . Mike wa s leadi ng wit h less th an two laps to go . but co u ld not fini sh . After th e race, he a d m irred h e h ad ref rain ed from drinking lar ge a mo u nts o f wat er to avoid p o ss i b le s to m ac h cra m p s. T hat 's a popular mi sco nceptio n. T h e h undred -pl u s h eat depleted his flu id sup p ly. H is tem peratu re soar ed, leaving h im weak an d dizz y. If he hadn ' t p u lled o ff th e co urs e, he co u ld hav e li tera ll y died o n h is bi ke. An English rider , Bo b Wri gh t, made th e finish , but th en pu ll ed o ver a nd passed o u t. II was repo rted th at hi s heart sto p ped briefl y o n th e wa y to th e hosp ital .) T h e bod y o ffers pl enty of warn ing signa ls as it becomes deh ydrated, The tem p erature r ises , th e l u n gs a n d muscles feel hot, Brea th in g beco mes d ifficu lt a nd co mes in sho rt puffs. Visio n blu rs. T h e m o ut h dri es. There's d izzin ess a nd n ausea. If the bra in h eat s too much , behavi or becomes irra tio nal. Event ua ll y, swea ting sto ps w hen th e body's radiator runs dry. The skin then feels dry a n d cla mm y. At th is p o in t, immedi a te treatment is necessary . T he bra in is severe ly ove rhea ted. T h e blood is th inn in g. Th e liver an d . kidneys ma y be damaged. Death is possib le. An yone suspected of su fferi n g heat stroke sho u ld be p laced in th e sha de, if possi ble, a nd trea ted a s a shock victim. The legs shou ld be eleva ted. Liq u ids should be pou red a ll ove r the bod y. Ice, if av a ilable, shou ld be rubbed over th e bod y.. Med ica l help shou ld be summoned immedi at el y. Cooling treatment shou ld co nt in ue until medi cal hel p arri ves o r th e victim is a lert. Stop treat m ent a t that p oint: co nt in ui ng to lo wer th e body temperature ca n be life threa ten ing. On ce th e victim is a lert, h e shou ld dr in k la rge quantiti es of fru it juice and potassi u m -rich m in era l d ri nks to rep len ish bod y flu ids a nd mi n era ls. Wa tch for a n y relapse a nd resu m e coo li ng treatment, if necessary, • Ch ampionship T ra in ing, by Dean M iller an d L en Weed , includes B rad Lack ey's co m p lete year-ro un d trai n ing p rog ram as w ell as in-dep th f itness and train i ng information for all sports. 112 p ages, over 80 p hotos an d illu stra tion s. T o orde r, se nd $9.9; plus $1.;0 postag e and han d ling to C lean sh eet Enterprises , P. O. B o x 241C , T nrzana . CA 913;6. 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