Thanks for posting this, Mark. I can't figure out what their measurement for "% Strength" is, or maybe I am missing something. If the picture that shows a dude doing what looks like a max hang as their measurement for "% Strength" then it's not surprising to me that those doing max hands would improve the most. I'm hoping someone can clear that up. I am a statistician by training, so to me those sample sizes for each group are insanely low.