Rik de Kort said:To be honest I find it rather strange to use an ab circuit consisting of three or four exercises with 20 reps per exercise for 3 rounds or some such. The rectus abdominis is a muscle. You should train it like one.
Well, that circuit would be terrible strength training but excellent endurance training. Whether you use a circuit like this or not kind of depends on what you are looking for.
It does bear striking similarity to the prerequisite hold requirements, don't you think? Multiple sets of 60s holds.
Obviously the pre-reqs are much more specific then the random ab circuit, but when we make a circuit of hollow hold => plank => hollow hang (as a simple example of something we would actually do here in the GB program) for 3-5 rounds of 60s holds what is the difference apart from specificity to this program? Very little, I think. Muscular endurance vs muscular endurance = the same training modality.
I'd say the biggest difference is that we take the endurance and keep progressively decreasing leverage until we have found our maximally disadvantaged lever with the proper body shape, and so we do build a higher degree of strength into the strength-endurance.