Exercise guide
Lever Ab Coaster Crunch
- Intermediate
- Compound
- Rep-based
- Waist
The Ab Coaster targets the entire abdominal wall using a bottom-up movement pattern that emphasizes the lower rectus abdominis while minimizing spinal compression. By moving along a curved track, it facilitates a natural pelvic tilt that maximizes core recruitment compared to traditional floor crunches.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Adjust the seat to the center position for a standard crunch or rotate it to the side to target the obliques.
- Place your forearms on the padded armrests and grasp the handles firmly with a neutral grip.
- Kneel on the padded seat, ensuring your knees are centered and your torso is upright with shoulders directly over your elbows.
How to do it
- Exhale and pull your knees toward your chest by contracting your abdominals, sliding the seat up the curved track in a controlled motion.
- Focus on 'curling' your pelvis toward your ribcage at the top of the movement to achieve a peak contraction.
- Inhale and slowly lower the seat back to the starting position using a 2-3 second eccentric tempo.
- Stop just before the seat hits the bottom bumpers to maintain constant tension on the abdominal muscles.
Form checklist
- Keep your upper body and shoulders stationary; do not use your arms to pull the carriage up.
- Initiate the movement from the core rather than swinging your legs or using hip flexors.
- Maintain a slight rounding of the lower back at the top to ensure full abdominal shortening.
- Keep your neck neutral and your gaze fixed forward throughout the set.
Pro tips
- Visualize bringing your belly button toward your chin to enhance the mind-muscle connection with the lower abs.
- Pause for one second at the top of the movement to eliminate momentum and force maximum fiber recruitment.
Make it harder
- Add Olympic weight plates to the side pegs of the seat to increase the resistance of the lift.
- Perform slow-motion repetitions with a 5-second descent to increase time under tension.
Frequently asked
- What muscles does the lever ab coaster crunch work?
- The lever ab coaster crunch primarily targets the abs and obliques, and also works the erector spinae as secondary muscles.
- What equipment do you need for the lever ab coaster crunch?
- The lever ab coaster crunch uses leverage machine.
- Is the lever ab coaster crunch good for beginners?
- The lever ab coaster crunch is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.