The dip is an excellent exercise to target the chest, shoulders and triceps, helping to strengthen the chest and surrounding muscles. It is therefore a exercise which is highly recommended for the treatment of Pectus Excavatum.
Mount wide dip bar with oblique grip (bar diagonal under palm), arms straight with shoulders above hands. Step down onto assistance lever with hips and knees bent.
Lower body by bending arms allowing elbows to flare out to sides. When slight stretch is felt in chest or shoulders push body up until arms are straight. Repeat.
Some assisted machines require you to kneel on platform instead of standing on bar.
Pectoralis Major, Sternal
Pectoralis Major, Clavicular