The specific effects of strength training and high-intensity interval training on brain health are not well-studied.

“I am personally not aware of any studies looking at other forms of exercise besides cardiovascular exercise for sake of brain health. And this, I think, is an important gap in the literature that ought to be filled, whether or not for instance, high intensity interval training, or whether or not weight training, which has other effects on the musculature, so you can imagine perhaps the myokine to BDNF pathway, the pathway one that you mentioned, might be signaled, but maybe not the liver pathway, maybe. Yes, I'm speculating here. Those studies need to be done. To my knowledge, they just haven't been done yet.”