There is a difference in stride efficiency between jogging and running at high speed. 20 year old men don't run 50 miles in one go let alone 70 year old men. Now jogging that distance over several hours is a reasonable form of transportation, but running is out of the question. So, jogging is a way to trade energy for time and distance where running trades endurance / distance for time, energy, and speed.
I would assume if humans where built purely for distance running then our most efficient stride would be used for distance running. But, I don't know what the overall tradeoffs are.
PS: There seems to be two definitions of running one of which is a stride there all feet leave the ground at the same time and the other involves high speed. While skipping falls under this definition of running the implication of speed is missing.
There is a difference in stride efficiency between jogging and running at high speed. 20 year old men don't run 50 miles in one go let alone 70 year old men. Now jogging that distance over several hours is a reasonable form of transportation, but running is out of the question. So, jogging is a way to trade energy for time and distance where running trades endurance / distance for time, energy, and speed.
I would assume if humans where built purely for distance running then our most efficient stride would be used for distance running. But, I don't know what the overall tradeoffs are.
PS: There seems to be two definitions of running one of which is a stride there all feet leave the ground at the same time and the other involves high speed. While skipping falls under this definition of running the implication of speed is missing.