Can't edit anymore: Since finding this I've found one more study that doesn't support the CoreControl, and I've found three that do support the CoreControl, as well as 3 redditors that have said the support it.

Another thing to note is that the sample group in most of these studies is far too small (9 people, come on!)

I wonder if the use of running as a stressor effected that study? The original article caused heat in the core and upper body(squats and pullups) while short sprints is more of a leg issue.