Lever Seated Leg Raise Crunch (plate loaded)
- Músculo objetivo
- Rectus Abdominis
- Músculos sinergistas
- Obliques
- Equipamiento
- Leverage machine
- Parte del cuerpo
- Waist
- Tipo
- Strength
The lever seated leg raise crunch (plate loaded) is a machine-based core exercise that simultaneously flexes the spine and raises the legs against plate-loaded resistance, placing concentrated demand on the rectus abdominis. The obliques assist throughout to stabilise the torso during the combined movement. It is well suited for building abdominal strength and thickness with measurable, progressive overload.
Cómo hacer el Lever Seated Leg Raise Crunch (plate loaded)
- 1Load the machine with an appropriate plate weight and adjust the seat so you can sit upright with your back firmly against the pad and your feet on the footrests.
- 2Grip the handles at either side of the machine firmly to anchor your upper body.
- 3Brace your core, sit tall, and take a breath before beginning the rep.
- 4Exhale and simultaneously curl your torso forward — flexing your spine — while drawing your knees toward your chest in a controlled arc.
- 5Continue until your rib cage and thighs converge as closely as your range of motion allows, squeezing the abdominals hard at the top of the movement.
- 6Pause for one count at the peak contraction before reversing.
- 7Inhale and slowly lower your legs and return your torso to the upright starting position, resisting the plate load on the way back.
- 8Repeat for the desired number of reps, maintaining control throughout — do not let the weight stack drop between reps.
Consejos de técnica
- Focus on spinal flexion, not just hip flexion — curl your lower ribs toward your pelvis so the rectus abdominis drives the movement rather than the hip flexors.
- Keep the eccentric phase slow (2–3 seconds) to maximise time under tension and reduce momentum carrying you through the rep.
- Start with a lighter plate load to dial in the combined crunch-and-raise movement pattern before adding resistance.
- Maintain a firm grip on the handles to stabilise your upper body, but avoid using arm strength to pull yourself forward.
Errores comunes
- Leading with the hips instead of the spine — lifting the legs without simultaneously crunching the torso shifts the primary load to the hip flexors and reduces stimulus to the rectus abdominis.
- Allowing the weight stack to drop and bounce between reps, which removes eccentric tension from the abs and can strain the lumbar spine.
- Using excessive plate load and shortening the range of motion, which prevents the abs from reaching a full contraction and limits the effectiveness of each rep.
- Rounding the lower back aggressively without control — while some lumbar flexion is expected, losing all lumbar support can place undue stress on the intervertebral discs.
- Holding the breath throughout the set rather than exhaling on the crunch, which reduces intra-abdominal pressure management and core stability.
Preguntas frecuentes
What muscles does the lever seated leg raise crunch (plate loaded) work?
It primarily targets the rectus abdominis — the muscle responsible for spinal flexion along the front of the abdomen. The obliques act as synergists, assisting with stabilisation and trunk control throughout the combined crunch-and-raise motion.
Is this different from a regular lever seated crunch?
Yes. The addition of the leg raise component means your lower abs and hip flexors are also involved in lifting the legs, while the rectus abdominis works across its full length to both flex the spine and draw the pelvis toward the rib cage simultaneously. The plate-loaded resistance allows precise progressive overload.
How much weight should I use on this machine?
Start light enough that you can perform the full combined crunch-and-raise movement with a controlled tempo for 10–15 reps. The goal is to feel the abs contracting through the full range of motion, not to move the maximum possible plate load.
How many sets and reps should I do?
For abdominal strength and hypertrophy, 3–4 sets of 10–15 reps with a deliberate tempo is a practical starting point. Prioritise quality contractions and a full range of motion over adding plates.
Where in my workout should I do the lever seated leg raise crunch?
Place it toward the end of your session, after compound movements such as squats or deadlifts that also require core stability. Performing heavy core isolation work first can fatigue the trunk and compromise your technique on those main lifts.
