Treat gravity like paying the toll before crossing the horizontal bridge of speed. A good suggestion is a balanced program, as force over time doesn’t lie with elite sprinters.
With various responses from members, it’s key to see the focus on the words balanced and both with my earlier post. Without each no progress can be done and in the real world both will occur, including lateral forces with some rotational forces being present. Instead of debating between taste great and less filling, the focus should be what happens during time. In order to go faster with higher amounts of propulsion, breaking forces need to be modulated by vertical forces early, since mechanically the legs can’t pull very effectively compared to pushing. The legs push down and then out, nearly simultaneously, making coaches think about what means are necessary to improve max speed.