With various commercial tools such as Strava, Trainingspeaks or Garmin, it is possible to view the training load of the trainings. This results in the further tranings planning. You can also see what you plan for your athlete, how much training he has to do in the Zone4 development report, and how much is going or running in the GA1, say Zone 1-2.
With the AZUM system, you can create any zone with a zone you have created and plan it for your athletes so that they are in TOP form on DAY X. You can view the load in various views from daily to yearly.
In the following pictures 4 zones are used
Zone 1 = Recovery / Zone 2 = GA1 / Zone 3 = GA2 / Zone 4 Development area