When I first started playing tennis in 1973, I bought a copy of "World Tennis" magazine. They had an instructional article on how to add more power to your game. On the forehand side, the recommended trying to put some topspin on the ball to help bring down hard-hit balls before they would fly long. (They said there were three ways to do this: (1) wrist flick, (2) pull up with the elbow, and (3) a gradually rising swing from the shoulder. The recommended (3) for most readers.)
On the backhand side, they pointed out that heavy under-spin had the opposite effect, helping hard-hit balls float long. So they recommended that readers try to use less under-spin on their backhands when hitting with power.