Yeah, but that doesn't answer the question about what is the best HIIT protocol. Supposedly the glycotic energy system is maxed out within 2 min, and that's the main reason why I'm focusing on a 2 min work protocol. ATP-PC is supposedly maxed out within 20 to 30 sec, and that's what the Tabata method focuses on with thier 20 sec work interval. But which protocol causes the most rapid fat-loss?
Depends on the goal, 95% of my program design is based on training the energy systems, for example, ATP-CP is the "power" energy system, when we train for power be it, sprints or power exercises, meaning 1-5 reps or if doing speed drills Lineal for example, the rest time is 2-3 mins for weights (power cleans, snatches, med ball, plyos, etc) for speed drills our rest time is right around 1min for every 10 yards ran..why? Because even though the exercise last 20sec or shorter, for example, the average play in football lasts about 5-6sec, the average time between plays in about 30 secs, unless you play like Oregon St with almost no huddles, theoretically it wouldn't make much sense to train beyond the ATP-CP energy system. On the other hand if you do play like Oregon St. you have to train to tap in to the Glycolytic systems, unless you're an endurance athlete, there should no reason why you should tap into the aerobic system.
Wanna burn fat and keep muscle.....don't go beyond the glycolytic energy system.