Having recently taken up boxing with an eye to eventual competition, I have become intimately aware of the pretty important position roadwork holds in conditioning for boxing and other combat sports.
The question I want to ask is, how specific is roadwork to both the activity patterns and energetic demands of combat sport? As far as I've seen, combat sports consists of short, intense rounds interspersed with even shorter rest periods. No doubt, roadwork benefits the central CVS, which would facilitate overall oxygen delivery in combination with more sport-specific conditioning and also help recovery between rounds. Plus all the good fighters do it, which means that it's obviously of great value to them. That, and I've heard that it's done as a strength-endurance exercise for the hip-knee-ankle-foot complex, which makes sense, since boxers have to bounce back and forth in stance for lots of rounds.
Even so, at least from my perspective, intense interval training closely mimicking the activity patterns of combat sport - weight complexes, rowing, resisted sprints, etcetera - with short rest periods in between would train the energy systems in a manner more closely resembling their recruitment during combat sports, ie. ATP-PCr and glycolytic systems during rounds, TCA cycle during between-round recovery.
Any and all input from anyone with lots of both combat sport and CST experience is much appreciated. I'm going to have do my roadwork during classes no matter what, but I'd certainly like to know if there are more efficient ways to get prepared during my own solo training.