This exercise is an example of how cable work has some advantages over a barbell in that the loading curve matches the strength curve, so there's constant tension on the delts from start to finish.
The other advantage is that most of the initiation of the movement comes at the shoulder joint rather than the elbow joint. The synergy between these two components makes this movement an awesome shoulder developer.
related posts
Tip: Biceps Bomb Mechanical Drop Set
Starting with a weight you can curl 12-15 times, do 8-10 reps on steep side of preacher bench, match those reps on the angled side, then stand and rep out.
A New Angle on Cable Training
Your teacher always said that ditching math class would come back to bite you on the butt and she was right. Luckily, Nick Tumminello is here to show you how vector mathematics can improve your workouts. (Really.)
Limited Equipment, Maximum Burn
Strip fat and build muscle with super short workouts and some basic equipment you already own.
Nervous Muscle
It's very apparent to me that there are many coaches and fitness writers who don't understand the nervous system. I'm not the least bit surprised because your nervous system is arguably the most complex and ambiguous system in your body.