substitute to rack pulls

[fqqs]

this is routine id like to follow Off-Season Program

but i dont have power rack so i wonder if i can substitute this aprticular exercise.. maybe power shrugs?

 

[natural1]

What abbout Glute Ham Raises? if not maybe Power Cleans or a deadlift variation like the Sumo Lift.

Id change the lat pull downs for overhand pull ups also (if you got somewere to do them)