The locomotion of hominins in the Pleistocene was just as efficient as that of current humans

Researchers have analyzed the influence of body proportions on the cost of locomotion by means of an experimental energetic study with 46 subjects of both sexes, whose results indicate that the walk of Pleistocene hominins was no less efficient energetically than that of current humans.
Strange & Offbeat: Fossils & Ruins News — ScienceDaily