Early humans won at running; Neandertals won at walking

New research has compared the performance of the heels of modern-day distance runners to the heels of Neandertals and ancient Homo sapiens. The results show the Neandertals' heels were taller than those of modern humans and Homo sapiens, and more adapted to walking than running over long distances, while those of Homo sapiens were more adapted to endurance running.

Assistant Professor of Anthropology, Dr David Raichlen of the University of Arizona in Tucson, and colleagues, found that unlike modern humans, the Neandertal heel was taller would have provided less spring during running, and speculated that the heel probably stabilized the ankle and helped in jumping and walking uphill. In modern humans the heel is lower and stretches the Achilles tendon and increases its ability to act like a spring and reduce the consumption of energy.

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