Upper Arms Exercise · Dumbbell

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Dumbbell Alternating Bicep Curl With Leg Raised On Exercise Ball

Also known as: Db Alternating Bicep Curl With Leg Raised On Exercise Ball, Dumbell Alternating Bicep Curl With Leg Raised On Exercise Ball

Category

Upper Arms

Equipment

Dumbbell

Target

Biceps

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Biomechanical cues verified by the PlanWorkouts Science Review Board under CSCS editorial oversight; see our editorial standards.

Balancing on a stability ball with one leg lifted while curling turns a simple arm exercise into a full-body stability challenge, since the core has to fight to keep the hips level the whole time. The curling itself barely changes from a standard alternating curl — the real work happens in the trunk and standing leg. It's less about loading the biceps heavy and more about training coordination under light load.

How to Do the Dumbbell Alternating Bicep Curl With Leg Raised On Exercise Ball

1. Stand with feet shoulder-width apart, holding a dumbbell in each hand with palms facing forward.
2. Set an exercise ball behind you and rest one foot on top of it, balancing carefully.
3. With arms fully extended and elbows tucked to your sides, curl one dumbbell toward your shoulder while keeping your upper arm still.
4. Lower that dumbbell back to the start and perform the curl with the other arm.
5. Keep alternating arms for the desired number of repetitions.

Biomechanical & Joint Load Cues

Single-joint elbow flexion isolated in the sagittal plane. Focuses mechanical load on biceps brachii (long and short heads) and brachialis with minimal torso swinging.

Common Mechanical Mistakes & Form Errors to Avoid

• Swinging Hips & Lower Back: Using momentum from the hips to swing the weight upward eliminates the initial concentric overload on the biceps.
• Drifting Elbows Forward: Allowing elbows to travel forward past the ribs recruits the anterior deltoids and takes tension off the biceps apex.
• Dropping the Eccentric Phase: Letting the weight fall quickly without resistance wastes 50% of the muscle-building stimulus from eccentric microtrauma.

Proper Breathing Patterns & Core Engagement

Inhale on controlled lowering (2-3s eccentric); exhale on elbow contraction to peak tension.

Injury Modification & Joint Safety

Lifters with distal biceps tendinopathy or golfer's elbow (medial epicondylitis) should use neutral-grip hammer curls or EZ-bars to reduce wrist pronation torque. If joint irritation persists, immediately stop and substitute this movement with another exercise from the Upper Arms exercises category.

Muscles Worked

The Dumbbell Alternating Bicep Curl With Leg Raised On Exercise Ball primarily targets the Biceps, with Forearms as the primary synergist muscle group, along with the Shoulders.

More Upper Arms Exercises

Assisted Standing Triceps Extension (with Towel) Assisted · Triceps Assisted Triceps Dip (kneeling) Leverage Machine · Triceps Band Alternating Biceps Curl Band · Biceps Band Close-Grip Push-Up Band · Triceps Band Concentration Curl Band · Biceps Band One Arm Overhead Biceps Curl Band · Biceps

More Biceps Exercises

Barbell Alternate Biceps Curl Barbell · Biceps Barbell Biceps Curl (with Arm Blaster) Barbell · Biceps Barbell Curl Barbell · Biceps Barbell Drag Curl Barbell · Biceps Barbell Lying Preacher Curl Barbell · Biceps Barbell Preacher Curl Barbell · Biceps

Equipment Alternatives

Don't have dumbbell? These target the same biceps with different equipment.

Biceps Leg Concentration Curl Body Weight · Biceps Barbell Alternate Biceps Curl Barbell · Biceps Cable Close Grip Curl Cable · Biceps EZ Bar Seated Close Grip Concentration Curl EZ Barbell · Biceps

FAQ

What muscles does the Dumbbell Alternating Bicep Curl With Leg Raised On Exercise Ball work?

The Dumbbell Alternating Bicep Curl With Leg Raised On Exercise Ball primarily targets the biceps as the primary agonist. Synergist assistance is provided by the forearms along with the shoulders. Maintaining strict biomechanical alignment ensures maximal tension remains focused on the intended muscle fibers rather than shifting to surrounding stabilizer joints.

What equipment do I need for the Dumbbell Alternating Bicep Curl With Leg Raised On Exercise Ball?

The Dumbbell Alternating Bicep Curl With Leg Raised On Exercise Ball is performed using a dumbbell. Ensure all equipment is securely positioned with collars or safety pins locked before loading working sets. If you train in a home gym or minimal setup, explore our equipment-free and resistance band alternatives below.

What is the most common form mistake on the Dumbbell Alternating Bicep Curl With Leg Raised On Exercise Ball?

The most frequent error is swinging hips & lower back: Using momentum from the hips to swing the weight upward eliminates the initial concentric overload on the biceps.. Controlling the 2 to 3-second eccentric lowering phase ensures maximal hypertrophic stimulus while shielding connective tissue.

How many sets and reps should I perform on the Dumbbell Alternating Bicep Curl With Leg Raised On Exercise Ball?

For muscle growth and density, execute 3 to 4 working sets of 10 to 15 controlled repetitions with 60 seconds rest, emphasizing a deep stretch and deliberate peak contraction on every rep.

What's a good alternative to the Dumbbell Alternating Bicep Curl With Leg Raised On Exercise Ball?

If you don't have access to a dumbbell, the Biceps Leg Concentration Curl targets the same biceps using body weight instead. This alternative replicates the same joint angle and movement plane while allowing you to train effectively with different available gear. You can also substitute it seamlessly in our free Workout Plan Builder.