Jamaican me speedy

2008-08-22 00:00

Jamaicans dominated the Olympic 100 m and 200 m sprints, with Usain Bolt setting two world records and his team-mates taking the medals in the women’s events.

One study conducted in Quebec in the 1980s found that black West African students had higher amounts of “fast-twitch” muscle fibres — responsible for short, explosive bursts of action — than white French Canadians did.

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