Out of interest, how does that compare vs just doing calf raises?
Helps to target the tibilas, which is ideal for me as I've struggled with shin splits for a good decade or so probably due to weak legs muscle,imbalances etc. Of course you can do body weight tibialis raises against wall but the tib bar allows you to apply a progressive load.
The bar has become popular these days due to Kneesovertoesguy , his vids are quite informative and without fluff.
Might want to look at getting a sports massage also, the muscles are all interconnected and releasing knots at one place can have an effect on other places.
Thankfully shin splints don't seem to be a problem for me anymore, also got the Ultraboost things and much better fit in 12 but lord are they a hideous colour, it's like a pink highlighter!
Might wait for the weather to turn and take thm on a muddy trail to take the shine off