Keijo Portugal specifically made the padding for their newly-invented sport.
This is because some anime fans in Portugal actually applied the fictional sport, Keijo’s rules to a new game they invented, thus introducing Keijo to the real world.
The manga may have been cancelled for “not doing so well”, but the franchise’s legacy looks like it will still live on.
However, they did admit that them real-world Keijo is still in its planning stages, and they’re currently trying to scout venues, as well as people interested to play.