Measures a hero's physical strength in comparison to the average.
The Strength Upgrade Test is one of the methods in which a member of the Hero Assocation can be promoted in the ranks. Normally, the strength of a D-Rank is considered average, with a few exceptions, (ie: Ankaiser, IS-KA). By passing this test, a hero can achieve C-Rank or even higher. Mr. Big Horn was able to achieve C-Rank through this test, but for him it was because of the Hero Booster Program.