Those crossfit hipsters call it 'training your working capacity', without too much thinking on which muscles are involved
SOF athletes use this too, not just crossfag bearded latte drinking pink socks hipsters.
Part of a stamina plan following the strength portion of the workout was:
100 one arm KB swings per arm
100 one leg box squat per leg
100 close push ups.
It's a different style of training, but after 5 weeks, I've found it very effective. Definitely thought was put in to what muscles were used/taxed, as it's part of an overall plan.