The barbell decline bench press is performed on a bench angled 15 to 30 degrees below horizontal, with the feet hooked under the leg pads. The downward angle biases the lower, sternal region of the pectorals and shortens the bar path, which is why most lifters can handle slightly more weight than on a flat bench. It is used to round out lower chest development and as a shoulder-friendly pressing option, since the elbows stay naturally closer to the body.
Log your barbell decline bench press sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.