Romanian Chair Sit-Up (VERSION 2) exercise animation (Male)

Romanian Chair Sit-Up (VERSION 2)

Target muscle
—
Equipment
Body weight
Body part
Hips
Type
Strength

Romanian Chair Sit-Up (VERSION 2) is a bodyweight hip-flexor strength exercise performed on a Roman chair (back-extension bench). You anchor your feet under the ankle pads, lower your torso past horizontal, then drive back up using your hip flexors to complete each rep. It is an effective accessory movement for building hip flexor strength and anterior core endurance.

How to do the Romanian Chair Sit-Up (VERSION 2)

  1. 1Adjust the Roman chair so the thigh pad sits just above your hips, allowing your torso to hang freely below horizontal. Set the ankle pads to grip your heels securely.
  2. 2Step up and position yourself face-up on the apparatus, hooking your feet under the ankle pads and resting the tops of your thighs against the thigh pad.
  3. 3Cross your arms over your chest or hold them straight alongside your torso to keep your upper body neutral.
  4. 4Brace your core lightly and lower your torso back in a controlled arc until it drops slightly below the horizontal line of your hips. Do not let gravity pull you down uncontrolled.
  5. 5Pause briefly at the bottom, feeling a stretch through the front of your hips.
  6. 6Contract your hip flexors to drive your torso back up, rising until it is roughly parallel to the floor or slightly above.
  7. 7Hold the top position for a brief moment before beginning the next controlled descent.
  8. 8After completing your target reps, step down from the apparatus carefully.

Form tips

  • Control the descent over about two seconds rather than letting gravity take over — slow eccentric loading increases hip flexor tension and reduces injury risk.
  • Stop the downward arc when you feel a strong stretch at the front of your hips; hyperextending the lower back past that point shifts stress onto the lumbar spine.
  • Keep your neck neutral throughout — avoid tucking your chin aggressively or craning it backward as fatigue sets in.
  • If the full range of motion is too demanding, start by lowering only to horizontal and progressively increase depth as your hip flexors grow stronger.

Common mistakes

  • Swinging the torso up with momentum instead of muscular control, which reduces hip flexor activation and can jerk the lower back into extension.
  • Hyperextending the lumbar spine at the bottom of the movement, placing excessive compressive load on the vertebrae and increasing injury risk.
  • Holding the breath throughout the set — this spikes intra-abdominal pressure unnecessarily; exhale as you rise and inhale as you lower.
  • Letting the feet slip or setting the pads too low on the thighs, which destabilizes the pelvis and shifts the loading pattern away from the hip flexors.
  • Rushing the top portion of the rep by only rising halfway, which shortcuts the contraction and reduces total time under tension.

Frequently asked questions

What muscles does the Romanian Chair Sit-Up (VERSION 2) work?

It primarily targets the hip flexors — the muscles on the front of the hip that pull the torso upward from the lowered position. The core muscles assist throughout the movement to stabilize the spine.

What is the difference between this exercise and a standard Roman chair sit-up?

The VERSION 2 variation emphasizes a deeper range of motion, lowering the torso past horizontal to place a greater stretch on the hip flexors before each rep, increasing the demand compared to stopping at horizontal.

Is the Romanian Chair Sit-Up (VERSION 2) suitable for beginners?

It is moderately demanding because it requires significant hip flexor strength and spinal control. Beginners should first limit the range of motion to horizontal and only lower past that point once they can perform 10–12 clean reps at the shorter range.

How many sets and reps should I do?

A practical starting point is 3 sets of 8–12 reps with 60–90 seconds of rest between sets. Add reps or an extra set over time as the movement becomes easier before progressing to a deeper range.

Where should I feel this exercise?

You should feel the primary effort at the front of your hips and upper thighs on the way up, and a clear stretch through the same area at the bottom. If you feel most of the load in your lower back, reduce the range of motion and focus on bracing your core.

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