Purpose of the exercise
This training exercise is a basic exercise that can work the chest. The angle of the bench is wearing the stress on the upper pecs but also on the anterior deltoid (front shoulder). Will be more inclined bench, shoulders more will be asked.
Using dumbbells can work in a larger amplitude than the bar and requires more activity at stabilizing muscles. It is advisable to start your weight training exercises for the chest inclined if the clavicular portion (top of chest) is a weak point.
muscles targeted
He asks the core muscles, especially the large and small pectoral, anterior deltoid, triceps. Other muscles involved to maintain balance.