The sports physiology of CKC's "system" is a little questionable. First, we need to clarify her subbing patterns which were not entirely consistent. She subbed less frequently later in the game, particularly in the 4th quarter and some games, her subbing patterns were overall less frenetic than in others.
None the less, she had more than a few games, where starters were subbed in less than 90 seconds and then players from the 2nd wave were subbed in less than a minute. I also tracked times when Tess, as one example, was in the game for 30 seconds, and so on.
I see value in the general idea. Players play in short intense spurts and the changing line-ups can have a disruptive effect on teams-- analytically it can be just as effective at breaking up a run as the magic time out.
But any athlete knows, it is a stressful on the body to come in and out of a game in a minute or 90 seconds. Muscles are just starting to get warmed up and boom your out and then have to come back in to high intensity action immediately.
Anyone doubting that this in and out pattern is subobtimal - try this: sprint 30 yards as hard you can then sit down wait 30 seconds, get up and sprint again 30 yards, sit for 30 seconds and then sprint again (at this point, you will have pulled a hamstring or some other muscle, so actually don't do this).
If CKC is going to continue in this system, she really needs to replace the conventional bench seats with exercise bikes so her core players can stay lose during their time off.
Physiogically, players would do better with 3-5 minute rotations.