/Body-Building Week\ Worlds strongest Man. Refusing to accept any nations supremacy

Re: /Body-Building Week\ Worlds strongest Man. Refusing to accept any nations suprema

Question on Arnold Schwarzenegger's body-building regime: I had read up on his technique on lifting weights and I came across several sources which/who have mentioned his workout as follows:

(Example)

Squats: Instead of 3/4 sets of [X] number of pounds...

Arnold Way of Squats:

10 reps of 100
9 reps of 90
8 reps of 80
7 reps of 70
(and so forth).

Granted this could have been a part of Arnold's technique, how effective is it, really?