Weighted Crunch
Weighted Crunch Exercise Description
The weighted crunch is a controlled spinal-flexion exercise that primarily targets the rectus abdominis, with the internal and external obliques assisting as stabilizers. Adding external load (such as a plate or dumbbell) increases the torque demand on the trunk flexors while the pelvis remains relatively still. Proper execution emphasizes curling the upper trunk and maintaining gentle contact of the lumbar spine with the floor to minimize hip flexor dominance. Range of motion is small—lift the shoulder blades off the floor by drawing the sternum toward the pelvis, then return under control. Consistent set-up, neutral neck alignment, and steady breathing help keep tension on the abdominals and reduce compensations like pulling on the head or arching the lower back.
- Muscle Groups: Abs, Core, Waist
- Target Muscles: Rectus Abdominis
- Stabilizing Muscles: External Obliques, Internal Obliques, Multifidus, Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core, Torso
- Body Surface: Front
- Body Symmetry: Other
- Equipment: Weighted
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Trunk Flexors
- Joint Involvement: Single-joint
- Muscle Location: Stomach
- Movement Direction: Other
- Muscle Position: Anterior
- Gender: Female
How To Do The Weighted Crunch Exercise
‘- Lie supine on a mat with knees bent, feet flat and hip-width apart.
– Hold a weight plate or dumbbell against your chest with both hands; keep the load close to your sternum.
– Set your trunk: gently posteriorly tilt the pelvis so the lower back lightly contacts the floor; brace the abdominal wall and draw the ribs down.
– Keep the neck neutral with a slight chin tuck; eyes toward the ceiling.
– Exhale and initiate by curling the upper spine—bring the sternum toward the pelvis without pulling with the arms.
– Lift until the shoulder blades clear the floor; keep the pelvis quiet and the lower back in contact.
– Pause briefly while maintaining abdominal tension.
– Inhale and lower slowly, returning the spine to the mat one segment at a time without losing trunk brace.
– Keep elbows and shoulders relaxed; avoid jutting the head forward or leading with the hips.
– Move smoothly; avoid momentum, excessive range, or holding the weight behind the head.
Weighted Crunch Tips
‘- Keep the weight plate or dumbbell pressed close to your sternum to avoid using your arms for momentum.
– Gently posteriorly tilt your pelvis so your lower back lightly contacts the floor before you start moving.
– Draw the ribs down and brace your abdominal wall to set your trunk before each rep.
– Maintain a neutral neck with a slight chin tuck and eyes toward the ceiling; don’t jut your head forward.
– Initiate the movement by curling your upper spine, bringing your sternum toward your pelvis instead of pulling with your arms.
– Lift only until your shoulder blades clear the floor while keeping the pelvis quiet and lower back in contact with the mat.
– Pause briefly at the top while maintaining abdominal tension.
– Lower slowly, placing your spine back on the mat one segment at a time without losing your trunk brace.
– Keep your elbows and shoulders relaxed so the tension stays on your abdominals.
– Move smoothly and avoid using momentum, going into excessive range, or holding the weight behind your head.
Weighted Crunch Beginner Introduction
The weighted crunch is an ab exercise that adds resistance to a classic curl-up for greater challenge to the front abs and side abs. It is performed on the floor with a plate or dumbbell held against the chest, so extra load increases the effort on the midsection while the hips stay relatively quiet. The motion centers on gently rounding the upper back so the chest moves slightly toward the pelvis, then easing back down under control. Only a small lift is involved, emphasizing precision rather than height.
Throughout the movement, the lower back maintains light contact with the mat, encouraging the abs to drive the action instead of the hip flexors. The neck stays in a natural line with a soft chin tuck, and the arms simply support the weight at the torso rather than pulling on the head. Smooth, unhurried reps and regular breathing highlight control, helping the trunk muscles stay engaged without relying on swinging, jerking, or shifting the weight behind the head.