This is an article I wrote last year to clearly delineate between being athletic vs trained. They have very little correlation in my eyes, and using a standard definition to describe an athlete among the spectrum of trainedness and athleticism can help a coach accurately prescribe a program designed for that athletes maximal return.

This is a deep one, and will take a few reads to make sense, but it really encourages sound thinking of long term training development. Yes, this is in contrast to the "modern" method of agile periodization and adjusting weekly based on results and HRV and VBT. But, if you can't write a year long outline without the use of modern technology based on planned physiological response to loads and training goals at that time of year, having on demand reports will simply cloud the waters, not improve your program.

Cluster training is a very cool and novel method to have a high density of high intensity training. Dr. Oliver researched cluster training vs typical setxrep training, and found some very interesting things! View his slides from NSCA in this powerpoint, and learn ways to implement cluster training into your athletes protocol. (Hint: more gains, lower RPE, lower fatigue, increased technique).