For myself, after switching to vegan food, taking a creatine supplement had very noticeably improved the endurance for things like weight lifting or short sprin

For myself, after switching to vegan food, taking a creatine supplement had very noticeably improved the endurance for things like weight lifting or short sprints at maximum speed. However, that has just restored the level of performance from when eating non-vegan food. The effects of creatine should vary both between humans, because they may have different capacities for internal creatine synthesis, and depending on the kind of food that they eat, i.e. whether it is naturally rich in creatine, or not.