I suspect that if we pull together all the actual data on the way modern and recent hunter-gatherers move during hunts, we might be surprised by how little actual hard running they do. I was, when I got out to the Kalahari. I had been getting prepared in Toronto - by running 10 km several times a week. The Kua just shook their heads when I asked about running. The hunters told me it was foolish - it would only alarm the injured game and it was much safer and more humane to walk softly and track. They were also aware of the unpleasant chemical residue left by fear and stress in animal muscle and wanted to avoid it at all costs. That is also why they avoided taking dogs on hunting trips.