For anyone aiming to strengthen their chest while building a rock-solid core, advice from a seasoned expert is invaluable. Lt. Col. Jason Barber, a U.S. Army Reserve strength coach with over a decade of experience at the World Class Athlete Program (WCAP), recommends a single move that delivers both.
Barber has trained athletes across eight Olympic and Paralympic sports, consistently helping more than ten athletes qualify for each Games. His go-to exercise for core stability and upper-body strength? The stability ball dumbbell chest press.
Unlike traditional chest exercises, this move challenges your core throughout the entire motion, while working your chest, shoulders, and triceps. It is highly effective for beginners learning balance and control, but also benefits advanced athletes by engaging multiple muscle groups.
“When I started as a young strength coach, I realized the importance of building a strong foundation,” Barber explains. “Core development is essential. Training on unstable surfaces forces your body to engage accessory muscles and improves overall stability, making your lifts stronger and safer.”
How to Perform the Single-Arm Stability Ball Chest Press
Hold a dumbbell in one hand and lie back on a stability ball, positioning yourself as if to perform a bench press. Use your core to keep your hips lifted and avoid sagging.
Press the dumbbell straight up while maintaining balance. Be careful not to let your body twist or rotate.
Slowly lower the weight back to the starting position.
Complete all reps on one side before switching arms.
Barber recommends incorporating this exercise into training routines for a more holistic approach. “It’s important to think beyond just chest or arm muscles. This move involves your whole body and improves functional strength.”
Muscles Engaged in the Stability Ball Chest Press
Though it resembles a traditional dumbbell bench press, the stability ball version activates many more muscles. A flat bench offers a stable base to push heavier weights, focusing mostly on chest muscles. In contrast, the unstable surface of the ball recruits your core, glutes, legs, and stabilizing muscles in your shoulders and back to maintain balance.
“All the muscles in my back, hips, legs, and abdomen engage to stabilize me,” Barber says. “It’s almost a full-body exercise, unlike the traditional bench press that isolates the chest.”
This combination of core and upper-body strengthening makes the stability ball dumbbell chest press a smart, efficient choice for anyone looking to improve strength, stability, and injury prevention.
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