Leg Raise

Leg Raise challenges the abdominals and hip flexors while the trunk resists arching or rotating.

Primary muscle
Abs

Primary musclesRectus abdominis, Iliopsoas

Secondary musclesObliques, Rectus femoris, Tensor fasciae latae

Equipment
Bodyweight
← Back to exercise database

Set up for Leg Raise

Prepare the training area

  • Use a level, non-slip surface and clear enough room for the complete movement.
  • Place any required mat, bench, or stable hand support before taking the starting position.

Position yourself for Leg Raise

  • Establish the named start position for Leg Raise, secure the training area, and rehearse the complete pain-free range before adding effort.
  • Set the pelvis and lower ribs before moving the legs, and shorten the lever if the lower back cannot remain controlled.

Choose and verify the starting level

  • Choose the easiest Leg Raise variation that preserves the required body line and full controlled range; use elevation, support, or assistance as needed.
  • Perform one slow rehearsal repetition and change the setup if the equipment shifts, the range causes pain, or the target position cannot be maintained.

How to perform Leg Raise

Follow the sequence in order, paying attention to the starting position, movement path, and finish described in each step.

  1. For Leg Raise, lie with the head and trunk supported, arrange the legs for the named variation, and press the lower ribs gently toward the floor.

  2. Brace before moving and keep the ribs, shoulders, and support points quiet.

  3. Draw the knee or legs toward the torso without swinging or allowing the lower back to arch away from support.

  4. Pause when the pelvis begins to curl or the legs reach the strongest controlled position; keep the shoulders quiet.

  5. Return the legs slowly without losing trunk position. Repeat without changing the established position.

Common Leg Raise mistakes

These are the form changes most likely to move work away from the target muscles or make the repetition harder to control.

Lower back arching

Shorten the leg lever or range as soon as the pelvis and ribs can no longer remain controlled.

Swinging the legs

Pause between repetitions and initiate with the abdominals instead of momentum.

Shoulders losing support

Keep the upper body active against the floor, bar, bench, or straps.

Returning too quickly

Lower the legs slowly; the eccentric phase is part of the exercise.

When to modify or choose another exercise

  • Reduce the resistance, range, lever length, or balance demand if Leg Raise cannot be completed without compensation.
  • Stop when the exercise produces sharp, catching, radiating, or increasing joint pain rather than the expected muscular effort.
  • Shorten the hold, range, or lever if the lower back or neck takes over; choose a different core pattern if symptoms continue.

How to use Leg Raise in a training program

Use Leg Raise in a focused core block after the main lifts, or pair it with an exercise that does not depend heavily on trunk freshness.

01

Where it fits in a session

Place Leg Raise after the main compound lifts, in a focused core block, or beside an exercise that does not require a fresh trunk.

02

How often to use it

Use two to four times per week while accounting for trunk work already supplied by squats, hinges, carries, and overhead lifting.

Starting rep ranges by goal

GoalSetsReps or timeRestEffort and execution
Control / technique2–35–8 reps45–75 secStop well before position changes
Strength / endurance2–48–15 reps60–90 secFinish with 1–3 technically clean reps in reserve

How to progress it

Increase the controlled range, lever length, or hold duration before adding load. End every set when rib, pelvis, or lower-back position changes.

Pairing and sequencing

  • Pair with upper-body accessory work when neither movement depends on an exhausted trunk.
  • Avoid fatiguing the core immediately before heavy squats, hinges, carries, or overhead work.

Coach's notes

  • Start with 2–4 sets of 6–15 controlled repetitions; use shorter sets for rollouts or long-lever variations.
  • Stop the set when the pelvis, ribs, or lower back can no longer stay in the intended position.
  • Progress range or leverage before adding resistance and avoid turning a controlled core drill into a speed test.

Regressions and progressions for Leg Raise

Start with an easier option

Bent-knee raise

Shorten the lever by bending the knees while keeping the pelvis and ribs controlled.

Dead bug

Use the floor to learn alternating leg movement without lower-back extension.

Progress when form is repeatable

Straight-leg variation

Lengthen the knee only when the same pelvic position can be maintained.

Slow-eccentric Leg Raise

Lower the legs over three to four seconds without swinging or arching.

References
  1. American Council on ExerciseACE Exercise Library
  2. Mayo ClinicWeight Training: Do's and Don'ts of Proper Technique
  3. American College of Sports MedicineACSM Resistance Training Guidelines Update
  4. NHSHow to improve your strength and flexibility

Build client programs that drive retention and cut your weekly programming time in half.

Explore the workout builder →

Beta access

Become a Traination Beta User

Apply to become a beta user of the app for free in exchange for feedbacks and reviews. Your time is important! That's why we will reach out to you individually to make sure this is the right fit.