Oliva was a weightlifter, there even exists a photo to prove it.
Arnold trained and competed in various strength sports during his youth, but later on stated that he considers weightlifting too dangerous for a human being.
There are numbers floating around the net on Columbu's alleged rather impressive lifts, but no evidence that I know of have ever surfaced, so I say bullshit. On Wikipedia it used to read his personal records, but now the article simply states: "He held a number of powerlifting and Olympic weightlifting world records."
