Schroeder in the only sample program I’ve seen has them written in as before a deadlifting session and after an isometric hold.
They are done for time.
Sure, they could be fine for a warmup for 2 lower body workouts, I don’t see why not.
Hey Folks,
I’m new here (introduced myself in the hypertrophy thread) I’m into weightlifting, so am mostly ignorant of the why’s for actual sprint specific training. But, just out of curiosity, I’ve read that it’s mostly isometric strength, ie holding the foot fixed to transmit the power from the thighs and hips, so why not perform isometric strength training at the angle your foot would be?
I saw that thread you guys had going on isometrics and static training and I think it said in there that if you perform them for short durations, like 5-10 seconds, you’ll build strength without bulk?
Just a non-runner chiming in 
Ron
I’ll let the coaches chime in, but at first thought the theoretical 90 degree training angle you propose only covers your foot angle at foot strike, and even then only if you are striking the ground perfectly at bottom dead center, right under your center of gravity. To get triple extension [hip,knee,calf] is desirable, so a split second later the same foot is trying to push off and extend at the end of that particular stride. So, locking in one isometric training angle ignores other equally important angles that the foot has to work with in the sprinting motion. [To say nothing of the efficacy of isometric training in ballistic athletics which is always open to debate.]
Ah, ok. And thus my ignorance on the mechanics of running is revealed! :eek:
Ron
PS, I’m a non-runner trying to be a runner too!
In the italian sprint tradition, Vittori uses lots of calf exercises in the generaland specific preparation site.starts with two footed standing calf raise with a barbell, fast and smooth, more than 30 per set…then progresses o single leg exercise.