Position your upper back on a padded bench, box or similar with the knees bent and feet flat on the floor. Push the heels through the floor and keep the abs tight to lift the hips as high as possible, focusing on contracting the glutes. Lower under control and repeat.
 
Load by holding a barbell or dumbbell across the hips.
 
Purpose
The weighted glute bridge is an easy way to overload hip extension with a focus on the glutes and minimal loading on the back.
 
Programming
Weighted glute bridges can be done at the end of a training session with trunk and accessory work in 3-5 sets of 5-10 reps. Reps as high as 30 can be done as well.

Variations
The weighted glute bridge can be done with the upper back supported on a bench or similar to extend the range of motion somewhat and increase the difficulty slightly. It can also be done without allowing the hips to touch the floor between reps to maintain continuous tension.