According to Keirsey SPs have tactical intelligence, enjoy being bold and making an impact, and can be quite creatively skilled in terms of either making things with craftsmanship or artistry, with SFPs leaning more toward artistry and STPs toward building.
While some SPs might be athletic of course they all aren't, it's just one of the ways their tactical intelligence could be focused.
Keirsey also says that ISFPs are inclined toward writing novels just as much as NFs are, so it's not as though all SP creativity has to result in something visual or auditory.
Of course I'm talking about Keirsey because Se shows up in different ways amongst the four types, to group them together collectively and say "what is an SP" seems more like a Keirsey question.
And one of the reasons I doubt him is because he says Idealists and Artisans can oppose one another but the truth is I feel more of a cross over between the two types.
That's probably why talking in terms of Se is better, and I do agree that Se is misunderstood. Apparently having Se doesn't guarantee expertise at being able to hit baseballs which are flying at your face.
So let's just say SPs are pirates.