Judging from the descriptions of the workouts, I think you can make educated guestimates about the level of impact each will involve since we all know Cathe cardio workouts already.
The HiiT is likely to be high impact during the 2 min bursts and low for the 1 min rests. High impact is the best way to get the intensity needed for true HiiT.
The athletic step will include a fair amount of high impact, especially during the "high voltage" sections. The step moves sounds like an up-dated version of RS and the impact will more than likely be low. The intensity will come from the speed of movement and choreography complexity.
The circuits will likely include a variety of high and low impact with more high impact in the skills and drills workout I expect. These workouts sound like Bootcamp, so there could be some moves like tuck jumps, but also lower impact moves such as we find on Low Max that keep the body moving closer to the ground but over a greater distance to get the intensity up there, like speed skaters. Then there will probably be moves like mountain climbers and squat thrusts. How do you rate those intensity wise?
The MMA sections will be mixed impact also. Higher impact in the jump rope sections and for the sequential power kicks Cathe loves to include, but lower in the punching/kicking drills and heavy bag section.
This is how I envision the STS cardio series.
Clare
I agree with Clare's assessment, especially in light of the paragraph cut/pasted from the initial announcement:
"STS SHOCK CARDIO is a maxed out blend of scientific research and cross training concepts at its best. You will do interval, circuit, steady state, longer, shorter, random and even ratio-based fitness training. You will do Kickbox, Boxing, MMA, HIIT training, Circuit, Speed, Agility, Power, Step, HIGH IMPACT, LOW IMPACT (emphasis added)… the list goes on."
And I say - BRING ON THE HIGH IMPACT! I'm pushing 48 and pushing it hard, and I love tuck jumps, flying vertical jumps, airborne jacks, plyo lunges, one- and two-legged forward bounding, one-legged hops, sequential power kicks . . . well, you get the idea. Just because one reaches a certain age does not mean they necessarily are incapable of certain exercise practices.
GO, CATHE! GO, SHOCK CARDIO! (Truth in advertising, I love it!)
A-Jock