It is unfortunate that they feel the need to bring out a new model when there is still a need to properly define the current models that we have. There will be no paradigm shift here. Systems theory has been moving away from linear approaches like this one, (planets, satellites, rings and suns etc., all moving in a predictable orbit with predictable trajectories), and moving towards nonlinear acentric models.
An open biological system, like one that includes an athlete, coach, trainer, therapist, etc, is not functionally reducible to its constituent parts because if there is a change in any one “part”, the effect on the whole is generally not predictable. All of its parts are integrated and part of a highly complex whole.
In order for a program to be successful, there will be multiple levels of control, but ultimately there needs to be only one level of control that interacts with the athlete (one agent)…the coach. As soon as there is more than one agent (another coach, a doctor, a sports psychologist, etc.), the relationship between the controlled (the athlete) and the controller (the agent a.k.a. coach), becomes far too complex for any one individual to perceive. The coach must be able to perceive in the athlete as many variables as possible before relaying information back to the athlete. With life in general, there are enough disturbances feeding into the controlled’s system as it is (family, girlfriend/boyfriend, school, work etc). These disturbances are best perceived and interpreted by one individual and then relayed back to the athlete, but now in accordance with the ultimate goal, which in this case will be a performance improvement in the athlete.
The athlete should be at the very bottom of the control hierarchy, with the coach just above. All of the other controllers should work directly with the coach. The result will be that the coach, the doctor, the physio etc will all receive feedback from the athlete, but it will be the coach who relays the information to the athlete as filtered through the ultimate goal with all the disturbances taken into consideration.
One of the major problems with having only one agent of control that interacts with the athlete, is that that people like to feel special and important, and like to believe that they have some super special and exclusive understanding of whatever field of expertise that they have which nobody else could possibly understand…especially a mere coach. They use jargon in order to feel important and special. An expert in for example will use jargon with his client to make his or herself seem far smarter than they really are, rather than using non-technical terms which the client could easily understand. I will agree that sometimes technical terms are necessary, but when this is the case, if the person knows what they are talking about, a simple explanation is all that is needed in order for the client to understand.
What I am not talking about here is a coach-centered system, or an athlete-centered system, nor any other system with a center. Living dynamical nonlinear systems have no center. They are for the most part groups of systems all working together. The properties that emerge are a result of this interaction.
So, to introduce a new model is, as far as I am concerned, making things more difficult than they already are.