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Northumbria University reveals secrets behind Jamaica's sporting prowess

Northumbria University reveals secrets behind Jamaica's sporting prowess

Posted by Shanelle Weir on November 21, 2014

Symmetrical knees is the secret behind the sprinting prowess of Jamaica’s track stars, according to North East academics.

Jamaica has produced some of the world’s fastest athletes – including record-breaker Usain Bolt – so researchers from Northumbria University joined a team of experts to investigate the small nation’s sporting success.

Their findings reveal that the symmetry of the knees and the ankles can impact on a person’s running speed. It suggests the more symmetrical the knees, the faster a person will run.

UK academics Kris McCarty, a research fellow in the Northumbria’s department of Psychology, and Mark Russell, a senior lecturer in the Sport, Exercise and Rehabilitation department, were part of a team of experts who travelled to the Caribbean island this year to carry out the research.

Kris said: “We specifically wanted to look into the success of Jamaican elite sprinters – the best of the best – because the country has so many record holders for sprint events.

“We flew to Jamaica in March where we took measurements from an elite track and field team in Kingston, as well as from a large sample of everyday Jamaicans.

“The findings show us there is a relationship between knee symmetry and running speed, although it is not known at this stage if the sprinters are great because their knees are symmetrical, or if their knees are symmetrical because of the time spent practicing and training.”

The team measured the knees of 74 elite athletes as well as doing the same with a control group of 116 non-sprinting Jamaicans of the same age and sex, and similar in size and weight. They discovered that the sprinters’ knees were much more symmetrical than the knees of people in the control group.

The participating sprinters were all members of the MVP Track and Field Club, and included Shelly Ann Fraser-Pryce, who holds two Olympic gold medals in the 100-metre sprint, and Nesta Carter, the man with the fifth-fastest 100-metre record.

Thirty of those sprinters who specialise in the 100-metre race, which does not require runners to turn, were found to have the most symmetrical knees of all.

Although scientists can already predict how fast a non-trained person will run when they are older, by looking at the symmetry of the knees in childhood, this is the first time any research has isolated a variable that predicts sprinting speed in current athletes.

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