In reply to Lewis Robinson:
For what it’s worth, the protocol I liked went like this...
I did a one off test session to establish what added weight I could hang for 13 seconds.
For the purposes of this example we’ll say that was 10kg.
Subsequent training sessions I would do 5 hangs (3min rests)
Hang 1 : 7kg for 10 second (I.e. 70% of 10kg, round up to nearest 0.5kg)
Hang 2 : 8.5kg for 10 seconds (I.e. 85% of 10kg, round up to nearest 0.5kg)
Hang 3 : 10kg to failure (I.e. 100% of 10kg)
Now, I’d change the weight depending on when failure occurred.
If at less than 8sec (rare), decrease weight by 1kg.
If at 8sec, decrease weight by 0.5kg.
If at 9 or 10sec, leave weight the same.
If at 11sec, increase weight by 0.5kg.
If at 12sec or more, increase weight by 1kg.
Hang 4: New weight to failure.
Change weight based on Hang 4 hang time.
Hang 5: New weight to failure.
For next session change weight based on Hang 5 hang time.
Say you managed 11kg for 11sec then start start then next session based on 11.5kg
Hang 1 : 8.5kg for 10 second (I.e. 70% of 11.5kg, rounded up to nearest 0.5kg)
This could probably be improved by checking body weight at the start of each session and adjusting your added weight to compensate for body weight fluctuations but I never bothered with that with no issues.