Compared to flat benching, the decline press can put less stress on the shoulders and lower back while increasing pec activation by minimizing rotation of the shoulder.
Incline bench pressing is a movement that can be used to develop the upper pectoral muscles (chest), increase shoulder strength, and add more muscle mass to the upper body for sports like powerlifting, strongman, and even Olympicweightlifting.
The advantage of leg curl machines using a sitting position as opposed to lying down on the machine is that you can train the hamstrings in greater isolation, putting less stress on the calves.