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Re:Dinosaur tail found preserved in amber (2016) by babapapa on Tuesday May 22, 2018 @11:20AM (#17126533)
That's for modern humans. Bone density studies of humans ~10,000 years ago suggest our muscles were much stronger.
Re:Dinosaur tail found preserved in amber (2016) by Retric on Tuesday May 22, 2018 @11:24AM (#17126577)
Endurance runners are not generally strong. Upper body strength for example is counter productive.

Further, Olympic paces are maintained by people getting aided with sports drinks at regular intervals etc. It's very different from the conditions primitive people would have lived.