Ab Coaster

Also known as: Ab Coaster (Machine)

Perform a machine-assisted abdominal flexion from a kneeling position to work the abdominal muscles and core. The movement curls the torso/hips upward using the machine's leverage.

How to do the Ab Coaster#

  1. Set the machine to a comfortable starting position and kneel on the carriage with your hands on the handles or pads.
  2. Begin with your torso in the extended position and your knees behind you on the pad.
  3. Drive your knees/chest upward by contracting your abdominal muscles, moving the carriage forward.
  4. Hold briefly at the top for a controlled peak contraction.
  5. Slowly lower the carriage back to the starting position under control.

Muscles worked#

  • Primary: Abs (Rectus Abdominis)
  • Secondary: Hip flexors (Iliopsoas (Hip Flexors)), Obliques (External & Internal Obliques)

Common mistakes#

Track the Ab Coaster in Gript: your previous sets in view while you train, records detected automatically, and an estimated 1RM chart from every hard set.

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Frequently asked questions#

What muscles does the Ab Coaster work?

The Ab Coaster primarily works the abs. The hip flexors, obliques assist as secondary muscles — they stabilise the movement and take over when the main target fatigues. If you feel it mostly in the hip flexors, obliques, lighten the load and slow the lowering phase.

What equipment do I need for the Ab Coaster?

The Ab Coaster needs the following: Machine. Nothing beyond that is required to run the movement as described above.

Is the Ab Coaster suitable for beginners?

Yes. The Ab Coaster is rated beginner: the technique is quick to pick up and forgiving when a rep goes slightly off. Start light and add weight once the form repeats itself without you thinking about it.

What are good alternatives to the Ab Coaster?

Machine Crunch, Ab Wheel, Air Bike all train the same primary muscles as the Ab Coaster. Pick whichever one matches the equipment in front of you.