Did slave owners breed bigger, stronger slaves?

Were slaves in America really bred for strength? And is that a reason why Black athletes often dominate today?

You can read Ken at kenlacorte.substack.com

Ken's script notes and sources: https://docs.google.com/document/d/19i6MZjCphzCcyiNVUbC6PhTBYqKD6jSbpFfjkaApC00/edit?tab=t.0