Sports science may well assist players to play for longer BUT that will be due to managing minutes. You won?t see 34/35 year old ever presents (goalkeepers aside). Younger players will need less monitoring.
Football has changed. The amount of running and the intensity of the game has increased. It?s been on this site and I know it?s been raised at Spurs about the style of play being a factor in the injuries of players. More and more players are suffering muscular injuries rather than impact injuries.