Here’s John Grimek, training his legs by performing a Hip Lift with what looks like 600 lbs. or so. To find out more about how Grimek trained, you’ll want to pick up a copy of The Mark Berry Bar Bell Courses (which features this famous picture on the cover).
One of the most interesting training techniques of the Oldtime Strongmen is to use short-range movements with very heavy weights. This not only gives a super workout for the muscles, but strengthens the tendons, ligaments and bones and also gives the psychological boost of being able to lift far above what you would normally be able to.