Effects of different set-ups with elastic bands on muscular power and performance during a countermovement jump in rugby players.

What effects does the box squat have on kinetic variables and muscular activity compared to the traditional squat?

In addition to limiting injuries and improving bench press performance, does the bench shirt change the trajectory of the bar ?

In powerlifting, what kind of help can athletes expects from the bench shirts during the bench press ? Does every model bring the same benefits ? And finally, how does it work ?