Jamaicans Spell Speed 'D-N-A'
Sprinters' success a combination of nature and nurture
By Sarah Quinn,  Newser Staff
Posted Aug 19, 2008 1:36 PM CDT
Gold medalist Shelly-Ann Fraser of Jamaica, center, and teammates Sherone Simpson, right, and Kerron Stewart show their medals for the women's 100-meter sprint in Beijing, Monday, Aug. 18, 2008.    (AP Photo/Greg Baker)
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(Newser) – Jamaicans sprinters are cleaning up in Beijing, thanks to both biology and their backgrounds. Runners of West African descent—including Jamaicans—have more "fast-twitch" muscle fibers, the kind that generate quick bursts of energy, Slate explains. But nature alone didn't propel 100-meter champ Usain Bolt to his record-breaking, chest-thumping gold.

There are cultural factors at play, too. The national high school track and field championships, "the importance of which to Jamaicans rivals that of the Super Bowl to Americans," Nina Shen Rastogi writes, "plus the 45 Olympic medals Jamaicans have now won in track—helps inculcate a deep sense of national pride in the sport."