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3 Hand-outs

Hand-outs Leerjaar 3

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19 NAME: ______________________________________ DATE: _____________ CLASS: ______ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ BODY & HEALTH - YOUR BODY

27 NAME: ______________________________________ DATE: _____________ CLASS: ______ Secret of an ultra-runner 1 From football-players to Olympians, every athlete has a limit. We’ve all had that burning feeling – heart pounding, lungs desperate for air – as your muscles begin to fatigue; in the end locking up altogether as your body shuts down. However, there is one man whose physiological performance is completely different from everyone else’s: Dean Karnazes is an ultra-runner from California and, at times, it seems as if he can run forever. Karnazes has completed some of the hardest endurance events on the planet, from a marathon to the South Pole in temperatures of -25°C to the legendary Marathon des Sables, but in his entire life he has never felt any form of muscle twinges like burning or cramp, even during runs exceeding 100 miles. “I just will myself to keep going,” says Karnazes. 2 While supreme willpower is common among ultrarunners, Karnazes first realised that he was actually biologically different when preparing to run 50 marathons in 50 days across the US back in 2006. “I was sent to a testing center in Colorado,” he recalls. “First, they made me do an ability test in which I scored the same as those of other highly trained athletes, but nothing extraordinary. Next, they performed a lactate threshold test. They said the test would take 15 minutes, tops. Finally, after an hour, they stopped the test. They said they’d never seen anything like this before.” 3 Karnazes became a run-aholic with running from an early age, and at high school he began to show endurance capabilities which were far better than those of his fellow students. At one charity fundraiser, while his fellow runners were able to manage 15 laps of the track at most, Karnazes completed 105. But in his mid-teens he stopped altogether. On his 30th birthday he was suddenly gripped by a powerful desire to run once more and he set off into the night. Source: theguardian.co.uk, 2013 BODY & HEALTH - KEEPING FIT