Exercise guide
Dumbbell Straight Leg Russian Twist
- Intermediate
- Compound
- Rep-based
- Waist
This advanced core variation builds rotational power and oblique definition while demanding intense isometric stability from the hip flexors and quadriceps. By keeping the legs straight and elevated, you increase the lever length, significantly raising the challenge for the entire anterior chain.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Sit on the floor with your legs fully extended and feet together.
- Hold a single dumbbell with both hands at chest level.
- Lean your torso back to a 45-degree angle while simultaneously lifting your straight legs 6-12 inches off the ground to form a 'V' shape.
How to do it
- Rotate your torso to one side, bringing the dumbbell toward the floor beside your hip while keeping your legs perfectly still.
- Exhale forcefully as you reach the end of the rotation, squeezing your obliques.
- Inhale as you rotate back to the center, then repeat the movement to the opposite side.
- Maintain a controlled tempo, focusing on the quality of the rotation rather than speed.
Form checklist
- Keep your legs locked straight and squeezed together throughout the entire set.
- Ensure the rotation comes from your ribs and shoulders, not just moving your arms.
- Maintain a neutral spine and proud chest; do not allow your lower back to round.
- Keep your feet at or near eye level to ensure constant tension on the lower abs and hip flexors.
Pro tips
- Imagine your lower body is set in concrete; only your upper body should move to maximize the isolation of the obliques.
- Focus on 'wringing out' your midsection like a towel at the end of each rotation to engage deep core stabilizers.
Make it harder
- Extend your arms further away from your chest to increase the rotational torque and difficulty.
- Slow down the tempo significantly, pausing for 2 seconds at the peak of each rotation to eliminate momentum.
Frequently asked
- What muscles does the dumbbell straight leg russian twist work?
- The dumbbell straight leg russian twist primarily targets the abs, obliques, and quadriceps, and also works the serratus anterior as secondary muscles.
- What equipment do you need for the dumbbell straight leg russian twist?
- The dumbbell straight leg russian twist uses dumbbell.
- Is the dumbbell straight leg russian twist good for beginners?
- The dumbbell straight leg russian twist is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.