This isn’t something I’ve looked into personally, but I would really strongly question the concept of “Others state that we should NOT use them, because they wont let the body recovery by itself, so it wont addapt and you wont gain any fitness.”
At that point you are at recovery, the body is rebuilding to be stronger and more effective.
There are two possible comparisons to be made here:
- You’re sitting a maths exam, but struggling. You let your maths savvy friend do it for you and submit his answers without looking. So far as it looks outside, you’ve “done the work” but you’ve actually learned nothing. This is the implication of the statement above.
- You’re building a new house, you’re a competent builder, but so is your friend. He comes and helps you and you finish in half the time. The end result is exactly the same, but you got there quicker.
My take on compression is 2), the “work” is the exercise, you then need the body to adapt and recover before you do more exercise. Anything that aids the speed of recovery isn’t “cheating”, it’s just preparing you for more exercise sooner.
I could see an argument that a shorter recovery period meant marginally less adaptation, but most of the adaptation would take place anyway and I would argue that being in a position to train hard again sooner would be a bigger gain than any loss in the gains made during recovery.
As another example: You’re in a friendly race preparing for the season, you’ve got a thirty-second lead but you’re bonking. As you round the next corner there are two people stood there, one with a bottle of SIS Beta Fuel, the other with a pastry. You need to get that energy inside you, know it’s going to be effective and get going again quickly, which do you choose?
The Beta Fuel gives you the energy you need quickly to complete the race, it doesn’t hamper your ability to digest pastries in future. The pastry doesn’t get into your system fast enough to help and even choosing that doesn’t improve your ability to use it for instant energy in future.
Sometimes science and technology just moves forwards, using it isn’t cheating.