Finally found what i was looking for, basically the sample of men are college age students, 60 guys from the university gym and 130 from the psychology courses. When taking height and leanness into account you could explain up to 80% of the given attractiveness rating. They did censor the faces, so the last 20% is statistical noise? Also there was "zero" preferences for the weaker men,. The ratings given from women where linear with the perceived strength, it did not level off.

I guess gymcels rejoice?

Might add that since they did not account for much else like income,facial attractiveness etc it mostly just show how attractive the body of men are in leanness,height,strength.

"Estimates of physical strength determined over 70% of mens bodily attractiveness.

Might also add that the references in the paper looks to be a gold mine.