Cable One Arm Press on Exercise Ball
- Target muscle
- Pectoralis Major Sternal Head
- Synergist muscles
- Deltoid Anterior, Pectoralis Major Clavicular Head, Triceps Brachii
- Equipment
- Cable
- Body part
- Chest
- Type
- Strength
The cable one arm press on exercise ball is a unilateral chest exercise that targets the chest (pectoralis major, sternal head), with help from the front shoulder, upper chest, and triceps. Pressing one arm at a time from a stability ball adds a strong core and anti-rotation challenge, making it useful for building balanced pushing strength and trunk control.
How to do the Cable One Arm Press on Exercise Ball
- 1Set the cable pulley to about chest height and attach a single handle.
- 2Sit, then walk your feet out to lie back on the exercise ball with your upper back and head supported and hips lifted into a tabletop position.
- 3Grab the handle in one hand and position the ball so the cable pulls back behind you, your elbow bent and the handle level with your chest.
- 4Brace your core and squeeze your glutes to keep your torso level and resist twisting toward the working arm.
- 5Press the handle forward and slightly inward until your arm is fully extended, keeping your elbow at roughly a 45–75° angle to your torso.
- 6Squeeze your chest at full extension, then lower the handle under control back to chest level.
- 7Complete all reps on one side, then switch the handle to the other hand and repeat.
Form tips
- Keep your hips high and level so your body stays in a straight line from knees to shoulders throughout the set.
- Resist the cable's pull toward the working side by bracing your core — the anti-rotation demand is part of the exercise.
- Press in a slight arc toward your midline to fully shorten the chest at the top of each rep.
- Start with a light weight to master balancing on the ball before adding load.
Common mistakes
- Letting your hips drop, which collapses your bracing position and shifts tension off the chest.
- Twisting your torso toward the working arm, which lets the core off the hook and reduces the unilateral training effect.
- Going too heavy too soon, which makes the ball unstable and forces you to cut the range of motion short.
- Flaring the elbow straight out to 90°, which loads the shoulder joint instead of the chest.
Frequently asked questions
What muscles does the cable one arm press on exercise ball work?
It primarily works the chest (pectoralis major, sternal head), with the front deltoid, upper chest (clavicular head), and triceps assisting. Balancing on the ball also engages the core and glutes.
Why press one arm at a time instead of both?
Single-arm pressing lets you train each side independently to even out strength imbalances, and the off-center load forces your core to resist rotation, building trunk stability.
Is this exercise good for beginners?
It can be, but balancing on the ball while pressing is demanding. Beginners should start with a light weight and focus on keeping the hips high and the torso steady before adding load.
How many sets and reps should I do?
For most lifters, 3 sets of 10–15 reps per arm with a controlled weight works well, since the stability demand favors moderate loads over maximal weight.
What is a good alternative if I do not have an exercise ball?
Perform the single-arm cable press standing in a staggered stance, or do a one-arm press lying on a flat bench to keep the unilateral chest focus with more stability.
