So, would it be the case then that one should only put coaches into fitness and goalkeeping? That would save a lot of money as well since those coaches can work on all teams including first teams and youth…

I can understand using one of these training methods for the youth teams, but on my first team there are a couple training I would want to use that aren't stricly for development, like set piece routines for increasing set piece familarity and team bonding/community outreach for morale. Would it screw up the training to add those for the first team?

Also, for what is the intensity rating for each level of tiredness in the experiments? It's not clear in the data, even when double intensity+ is written.