This problem was treated with a bit more sophistication by Harvards Lieberman in „A story of the human body“ and the corresponding nature article [0] establishing persistence hunting as an ancestoral hunting technique of homo sapien.
See figure 2b for the plot you were looking for. Running faster is less efficient but only slightly so and walking is a U-shaped curve like most mammal gaites.
It shows that in contrast to most animals, the efficiency curve of humans for running speeds is extremely flat, ie, we are about equally efficient at many different speeds, while the kind of game that we hunted was not.
The discrepancy allowed us to find a speed where we could exhaust the animal after 10-30km (as I understand) provided we were also excellent trackers.
It shows that in contrast to most animals, the efficiency curve of humans for running speeds is extremely flat, ie, we are about equally efficient at many different speeds, while the kind of game that we hunted was not.
The discrepancy allowed us to find a speed where we could exhaust the animal after 10-30km (as I understand) provided we were also excellent trackers.
https://www.nature.com/articles/nature03052.epdf?sharing_tok...