#soft or artificial ground outsole truly reflects the best boot-surface match for other populations. Applying basic physics would make one question the generalisability of outsoles and their traction for populations needing less traction to play. Optimal traction is not only a performance requirement to make you accelerate faster or perform a cutting movement more efficiently. Optimal traction is very important to minimise injury31-32. Too high traction and your boot will get stuck in the ground. On the contrary