Each and every upper body pull or push movement depends on shoulder health, mobility and performance. If you want to get the most out of your workouts, you need to have a strong and healthy set of shoulders, but they are nothing without a stable base, which means proper positioning of the shoulder blades.
And in order to create a stable base, you need strong trapezius and rhomboids and it would only make sense to train them and strengthen them to develop good pressing and pulling power.
Have you ever done a pressing or a pulling movement and noticed that your shoulders aren’t stable and are moving up and down? In the beginning, it’s easier to fix this flaw, but as you get stronger and weight increases, the problem gets bigger. And at this point, the only way to fix the problem is by incorporating trapezius work into your routine.
Tip: Control the dumbbells on your way down because, unlike the standing version where your legs absorb most of the energy, when you’re seated, all of the force is sent to your lower back.
Having too much leg drive can break a set of shrugs and turn them into a whole-body movement and not a trapezius one. The great thing about dumbbell shrugs is the fact that you can do them from a seated position.
When you stand for the shrugs, you bring your legs into play(which is eliminated in the seated version), and the strength of your back and when we add a little knee bounce to the equation we receive more total weight with half the form! But don’t fool yourself into thinking that just because you are pulling more weight, you’re going to get better results. Focus on completely removing the momentum for better upper trap isolation.