Ollie, the work furthers the dynamic stabilization ability of the active musculature, and joint structures, via the perturbations. This is particularly beneficial to the shoulder girdle, torso, and hip girdle relative to heightening the durability of the associated tissues relative to sport demands.
The extensive nature locally supports the training of the aerobic properties of the active musculature and generally supports the maintenance, or development depending on the movement rate, of general work capacity.
The reactive/elastic method of execution of the med ball rebounds serves as supportive role relative to sport demands and how the active structures are stressed.
The ground based abdominal work is, posturally/orthopedically consistent with McGills guidelines and, once again, the small movement amplitudes and regime of muscle activity are similar to the way in which the abdominal muscular functions, primarily as a stabilizer and force transducer, during field based sprinting, deceleration, changing direction and so on. The extensive nature of this work, along with the volume, serves to improve general work capacity as well.