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
The Texas Arm Wrestler's Curl
Here's a nasty little exercise we picked up from a couple of competitive arm wrestlers.
Anterior Core Training
Real core training, real simple. The best exercises and exercise progressions for your abs.
Tip: Hammer-Grip Kettlebell Drop Set
For this mechanical drop set, you'll start with the hardest exercise and, as you fatigue, move to the easiest. Works with a bar and a supinated grip too.
HSS-100: Shoulder Specialization
Because nothing improves your physique more than building your shoulders. Here’s how to do it.