Benefits of the Dumbbell Abdominal Boxing Curl : This exercise, when done correctly, activates the core, strengthens the chest (pectorals), front shoulders (front deltoid), arms (biceps), and the abdominal muscles. The biceps are also activated as he curls up from the mat with his elbows bending, assisting the abdominals during the movement.
Technique: The model in this video is moving very quickly throughout the movement. However, the slower you move, the harder it is. In addition to that, you can add heavier handweights. Keeping both feet flat, instead of lifting up onto the heels, increases the workload.
Cautions: Don’t forsake correct technique by adding more weight, or moving faster. The point is to activate the core by stabilizing hips and legs as you curl up, and then release downward. If your knees buckle and wobble, you’re either using too much weight, or going down too low for your level of strength. The same goes for your hips. They should be stable. If you can’t stabilize, you will need to start with a basic ab exercise until you get stronger. This exercise is not recommended for beginners.
EXERCISE DOs and DONTs – As with all exercise programs, when using exercise videos that appear on this site, you need to use common sense. If your muscles are weak, either do the modifications, or don’t attempt this exercise if it’s too difficult for you. When starting an exercise program, be sure to discuss your plans with your healthcare provider
Irene Pastore Fitness.com 