Cable Single Leg Tuck Reverse Crunch
Cable Single Leg Tuck Reverse Crunch Exercise Description
The cable single leg tuck reverse crunch is a controlled trunk-flexion exercise that emphasizes posterior pelvic tilt to target the rectus abdominis. Using one ankle attached to a low cable adds constant, unilateral resistance that increases anti-rotation demands on the obliques while you curl the pelvis. When performed correctly, the movement initiates from the abs—lifting the tailbone slightly—rather than pulling primarily with the hip flexors. The non-working leg and upper body act as stabilizers to keep the lumbar spine supported and the ribcage stacked over the pelvis. This variation suits lifters who want a precise, low-momentum reverse crunch with clear feedback from the cable on both the lifting and lowering phases.
- Muscle Groups: Abs, Core, Waist
- Target Muscles: Rectus Abdominis
- Assisting Muscles: External Obliques
- Stabilizing Muscles: Internal Obliques, Multifidus, Quadratus Lumborum, Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core, Torso
- Body Surface: Front
- Body Symmetry: Unilateral
- Equipment: Cable
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Trunk Flexors
- Joint Involvement: Multi-joint
- Muscle Location: Stomach
- Movement Direction: Vertical
- Muscle Position: Anterior
- Gender: Female
How To Do The Cable Single Leg Tuck Reverse Crunch Exercise
‘- Set a low pulley and attach an ankle cuff to your working leg; lie supine with head away from the machine.
– Hold a stable anchor (bench sides or machine post) lightly for upper-body stability.
– Keep the non-working leg straight or softly bent on the floor; point toes up to keep it quiet.
– Brace gently: ribs down, neutral head/neck, eyes to ceiling.
– Start with the working hip slightly flexed so the cable is taut without jerking.
– Exhale and initiate by posteriorly tilting the pelvis—press low back toward the floor and curl the tailbone up a few centimeters.
– As the pelvis curls, tuck the working knee toward the chest; keep the shin relaxed and movement smooth.
– Resist rotation: keep both ASIS (front hip bones) facing the ceiling; minimize side-to-side sway.
– Maintain a small, controlled range; avoid swinging or using momentum.
– Inhale and lower with control until the sacrum returns to the floor and the cable remains lightly tensioned.
– Keep shoulders relaxed and chin slightly tucked throughout.
– Switch legs only after fully resetting your brace and alignment.
Cable Single Leg Tuck Reverse Crunch Tips
‘- Set up with the working hip slightly flexed so the cable is taut before you start moving.
– Hold the bench sides or machine post lightly to stabilize your upper body without gripping hard.
– Keep the non-working leg on the floor with toes pointed up to keep it quiet and stable.
– Brace by bringing ribs down, eyes to the ceiling, and keeping your head and neck neutral.
– Initiate each rep by posteriorly tilting the pelvis—press your low back toward the floor and curl the tailbone up a few centimeters.
– Focus on tucking the working knee as a result of the pelvis curling, rather than pulling mainly with the hip flexors.
– Resist rotation by keeping both front hip bones facing the ceiling and minimizing side-to-side sway.
– Use a small, controlled range and avoid swinging or using momentum on the way up.
– Lower with control on an inhale until the sacrum returns to the floor while keeping light tension on the cable.
– Keep shoulders relaxed, chin slightly tucked, and reset your brace and alignment before switching legs.
Cable Single Leg Tuck Reverse Crunch Beginner Introduction
The cable single leg tuck reverse crunch is a floor-based cable core movement that blends a small hip tuck with a precise reverse crunch. Lying on the back with one ankle connected to a low pulley, one leg moves against the cable while the other leg, arms and torso act as anchors. The main action comes from the abs as the pelvis rolls so the tailbone lifts slightly and the working knee travels toward the midsection. Because the hip flexors are not meant to dominate the motion, the front of the body near the belt line handles most of the effort, assisted by the side abs, while the lower back stays gently supported against the ground.
This setup creates one-sided cable tension that challenges rotation control, as the core resists twisting while the leg tucks in and extends out under tension. The cable’s pull provides instant feedback on both the upward curl and the return, which suits lifters who prefer a slow, low-swing reverse crunch with clear awareness of pelvic position and ribcage alignment.