Train Fitness has rebranded to Motra. Learn More

Balance Trainer Single-Leg Lifts

Intermediate
Home Friendly

Balance trainer exercise that targets the abs and hip flexors to enhance core stability. Involves unilateral leg lifts with arm reaches on an unstable dome for added balance challenge.

About Exercise

Equipment

Balance Trainer

Difficulty

3/5 • Intermediate

Primary Muscle Groups

Abs, Hip Flexors

Secondary Muscles

Lower Back, Quads

Popularity Score

5

Goals

Stability
Conditioning
Mobility

Training Style

Balance Training
Functional Training

Setup Requirements

Requires Rack

No

Requires Bench

No

Requires Spotter

No

Space Needed

Small

Noise Level

Low

Muscle Breakdown

Abs

9/10

Rectus Abdominis, Transverse Abdominis

Hip Flexors

8/10

Iliopsoas

Obliques

6/10

External Obliques

Lower Back

4/10

Erector Spinae

Quads

3/10

Rectus Femoris

Programming

Typical Rep Range

10-20 reps

Rest Between Sets

30-60 seconds

How to Perform

Lie supine with your lower back centered on the dome of the balance trainer, one foot flat on the floor, and the working leg extended hovering above the ground.

  1. Engage your core to press your lower back into the dome.
  2. Simultaneously lift the extended leg and the opposite arm toward the ceiling.
  3. Pause briefly at the top with the leg perpendicular to the torso.
  4. Slowly lower the leg and arm back to the starting position.
  5. Maintain balance and repeat for the desired reps before switching sides.

Coaching Tips

Form Cues

  • Ribs down
  • Brace core
  • Reach long
  • Control the dome

Breathing

Exhale as you lift the leg and arm, inhaling as you lower them with control.

Tempo

3-1-1

Range of Motion

Lift the leg until the hip is flexed to approximately 90 degrees without rounding the lower back.

Safety

Safety Notes

  • Ensure the balance trainer is on a non-slip surface
  • Stop if you feel sharp pain in the lower back

Spotting

Self-spot by keeping the non-working foot firmly planted on the floor for stability.

Common Mistakes

  • Arching the lower back
  • Using momentum to lift
  • Holding breath
  • Twisting the hips

When to Avoid

  • Acute lower back injury
  • Hip flexor strain
  • Recent abdominal surgery

Flexibility Needed

  • Adequate hip flexion range
  • Core stability without arching

Build Up First

  • Master floor single leg lifts
  • Basic plank hold proficiency

Also known as

BOSU Single Leg Lifts, Balance Dome Leg Raises, Unilateral Balance Trainer Leg Lifts, BOSU Dead Bug

Found this helpful?

Share your thoughts or help us improve this guide.

Hero Image

Master your movement.

Experience automatic exercise detection and rep counting - powered by the motion of your Apple Watch.

We use cookies to enhance your browsing experience, serve personalized content, and analyze our traffic. By clicking 'Accept All', you consent to our use of cookies.