This resistance band workout is going to work on the players ability to quickly and explosively execute multiple jumps in a row. A couple great examples of this skill being used in a game is when a player goes to finish at the basket, misses the first attempt, but quickly jumps back up and tips the ball in. Another example would be, a post defender jumping to contest a shot and then immediately jumping again to rebound the miss. The player needs to be able to quickly land and explode back upwards, without having to take a long time to load.
The resistance band is really going to allow the player to be able develop their explosiveness, and the reason why is because the band makes the players muscles have to work harder than they normally would. That way when the resistance is removed, the muscles still think that they need to put out that max effort. Which makes the player jump that much higher. This is a great workout to add to your basketball training time in the gym and to work on becoming a better jumper.