what kind of workout warrants a backload?

[DShamah]

HIT?
Westside method ME day, DE days repetition days?
wendler 5/3/1
body builder splits
Running
sprinting
Prowler push/pulls
heavy farmers walks
how do you know if you should backload or not?

[Trevorxgage]

To an extent, you have to go by feel.
Glut4 translocation is achieved by muscular contraction against heavy resistance, so whenever you work with a heavy load you could backload if you feel it's necessary.

Endurance exercise doesn't warrant a backload, and most of us wouldn't backload after HIIT/sprinting.

[DShamah]

so farmers walks that are heavy would warrant a backload?
and what about loading the prowler with something heavy and pushing it a few feet for a couple sets?

[Trevorxgage]

If you feel like you need one, then yes, you could.
I've done it after heavy sled pulls, but only when I felt so drained I could hardly move from it.

I normally only backload after heavy resistance training.

[AkumaZ]

Big Tex mentioned in the Programs section something about working with 70+% of your 1RM, but I dont know how much volume at this intensity is needed

[Booch59]

Big Tex mentioned in the Programs section something about working with 70+% of your 1RM, but I dont know how much volume at this intensity is needed

70% is fair estimate, personally I just go by rep totals.

For example: I make sure to perform at least 2-3 multi-joint core lifts at 4x6-10 at the begining of each training session. I figure if I'm reaching muscular failure around 10 reps or less I'm probably getting enough tGlut translocation. Busting out 15+ reps each set will most likely not be heavy enough.

Just my opinion based on a couple months of experimentation.