Practical example from my high level D-1 players:
In the January through pre-spring ball training block I wrote for my skill guys we, at our peak, worked up to, after performing linear and positional tempo runs/drills (totaling 2000yds small skill, 1200yds big skill), 1500 abdominal repetitions followed by 900 med ball wall rebounds.
This was performed twice per week.
Due to the muscles of the abdomen operating much more so in a stabilizer capacity, whether concerning collisions, battles, sprinting (during American football field based actions) I selected to have my guys perform the totality of abdominal exercise in the form of very small amplitude dynamic movements in various positions (McGill variants, dynamic front/side isometric supports, trunk rotations within 30 degrees either way, etcetera).
The repetitions themselves involve dynamic movement; however, the movement amplitudes are very small. This could be considered oscillatory isometrics.
The med ball wall rebounds are performed with 10, 12, and 15lb balls respective to the strength of the player; and again, the movement amplitudes are, while larger then the abdominal variants, rather small.
I should note that the med ball wall drills I have my guys perform have them standing within 1 meter of the wall and while the frequency of the throws is fairly high the effort itself if extensive.
The entire training session, on those days, goes, in the following order:
- warm up approx 20-30min
- tempo runs/drills approx 30min
- abs/med ball rebounds approx 30min
- auxiliary resistance training approx 30min
It must be noted that we worked up to the mentioned volumes over the course of weeks and, while challenging, my guys handled it in a routine fashion.
Had an observer walked into the weight room, at the end of the session, only to have seen the auxiliary work, they would have in no way thought that any of the previous work had occurred.
Needless to say, our work capacity is tremendous, both in the alactic and aerobic regimes, and recovery is paramount and accounted for in the weekly plan.