But for the most part, other experts agree that even some humans today likely resemble Neanderthals in physical terms. Some debate still exists as to whether the main physiological differences made a difference, such as wider-spaced hips making Neanderthals less efficient at long-distance running. "Going to the gym, going on a bike ride, even most Olympic training doesn't do the same thing as having the same serious level of lifting, walking that people have done in the past," Trinkaus explained. Trinkaus said that prehistoric humans would have developed similar or greater strength due to their hunter-gatherer lifestyle, a view that he has gradually come to embrace during his professional career. "However, if you compared them to early modern humans, the Neanderthals and early humans would not appear very different." "If you compare to yourself or most people probably living in mechanized urban areas, the Neanderthals would appear very strong," said Erik Trinkaus, a physical anthropologist at Washington University in St. But experts say that the similarity is greater than previously thought, and that our modern perceptions have become skewed by modern living. The long-running Homo sapiens may seem very different from its relative the Neanderthal, which overlapped with prehistoric humans on Earth until it vanished about 20,000 years ago. "The Tarahumara used to run deer down to exhaustion." "Kids on lunch break will go run ten miles," Lieberman noted. Even contemporary people who still rely on persistence hunting without long-range weapons can run with equal ease, such as the Tarahumara of northern Mexico. Modern Olympic marathoners could take full advantage of their running to beat early human ancestors such as Australopithecus in a long-distance race. Early humans relied instead upon tiring their prey by running them down to exhaustion, combining a springy step with sweat glands all over the body that prevented overheating. Lions can run about twice as fast as the fastest Olympic sprinters over short distances to catch their prey. "Most human sports that we value the most (with exception of power sports) involve this incredible ability to run or do aerobic capacity," Lieberman said. The ability to run for long distances changed human athleticism - as well as history - and came around the 2-million year mark, allowing human ancestors such as Homo erectus to hunt seriously for the first time.Įarly hunters only had sharpened wooden sticks and clubs, which meant that success in catching and killing prey relied on the difference between human marathon running and animal sprinting. "Running would have been possible, but probably not as efficient." " Australopithecus represented a biped on the ground with much more climbing ability and without striding locomotion," said Ian Tattersall, anthropologist and curator for the American Museum of Natural History in New York City. Yet when it came to running, Australopithecus found itself in an awkward position of having just learned to walk comfortably on two legs. "Their short stature and low body mass would also have greatly increased their ability to do flips and spins because of the low rotational inertia of their body." "The Australopiths would really excel at gymnastics and diving because of the greater upper body strength, longer arms," Carrier told LiveScience. The same physical advantages would have extended to other Olympic sports as well. The smaller human ancestor would have had an advantage in fighting sports such as wrestling, especially if the size advantage of modern humans was removed. The build of Australopithecus unsurprisingly continued the ape trend toward male-male physical competition, said David Carrier, a biologist at the University of Utah. "You would never want to arm wrestle a chimpanzee." "A big male chimp weighs about 50 kilos, yet could easily rip the arm off someone," Lieberman noted. Their bodies still reflected chimp features such as longer arms and a stronger upper body built for fighting and swinging through the trees. For instance, before 2 million years ago, the earliest human ancestors such as Australopithecus afarensis (represented in part by the famed "Lucy" fossil) had just come down from the trees in an evolutionary sense.
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