Medicine Ball Russian Twist
The medicine ball Russian twist is a seated core exercise: you lean back holding a medicine ball at your chest and rotate your torso from side to side. It works the obliques, with the abdominals and hip flexors holding the leaned-back position.
Also called: Med Ball Russian Twist, Weighted Russian Twist, Medicine Ball Seated Twist · Equipment: medicine ball · Pattern: isolation
Step by step
- Sit on the floor with your knees bent to about 90° and your heels on the floor. Hold a medicine ball in both hands in front of your breastbone, elbows bent.
- Lean back until your torso is about 45° from the floor. Keep your chest up and your spine long rather than rounded.
- Brace your trunk, then turn your ribcage and shoulders to one side so the ball arrives beside your hip.
- Rotate back through the centre under control and carry the ball to the other side. Each side counts as one rep.
- Keep your knees pointing forward and your feet still, so only your torso and the ball move.
- Breathe out as you turn to each side and keep a steady tempo with no swing. At the end of the set, bring the ball to your chest and sit up.
- Turn your ribcage, not just your arms
- Chest up, spine long
- Knees still, only your torso moves
- Slow the ball down at each side
- Breathe out as you turn
In VALDA, these cues are one tap away on the exercise while you train.
What it trains
| Muscle | Role | Evidence |
|---|---|---|
| Obliques (internal/external): external | Prime mover | C |
| Obliques (internal/external): internal | Prime mover | C |
| Rectus abdominis | Secondary | C |
| Hip flexors | Stabiliser | C |
| Transverse abdominis | Stabiliser | D |
| Quadratus lumborum | Stabiliser | C |
Evidence grades: A = strong research base · B = good · C = limited · D = coaching consensus.
What goes wrong, and the fix
Swinging the ball with momentum
Fix: Slow the ball down and pause briefly beside each hip.
Rounding the low back
Fix: Lift your chest and lean back only as far as you can hold a long spine.
Moving the arms instead of the torso
Fix: Keep the ball in front of your breastbone and turn your shoulders with it.
Knees swaying side to side
Fix: Point your knees forward and keep your feet still for the whole set.
Leaning too far back
Fix: Lean back to about 45° and hold that angle for every rep.
What the research says
Muscle growthGeneral fitnessSport performanceEndurance
- Reps and load — General resistance-training research finds lighter loads and higher reps favour local muscular endurance, which is how this light, ball-loaded twist is most often used.
- Sets — A common approach is 2–4 sets of 20–30 controlled reps, counting each side as one rep. There is no direct research comparing set and rep schemes for the Russian twist.
- Progression — Practitioner reviews describe released rotational medicine-ball throws as the step towards rotational power; the held twist is commonly used as a lead-in to them.
Swap it mid-workout
- Russian Twist
- Rotary Torso Machine
- Medicine Ball Hip Toss
- Medicine Ball Rotational Throw
- Medicine Ball Side Throw
- Medicine Ball Woodchop
With VALDA Pro, FLEX offers alternatives like these when you swap an exercise mid-workout.
Log the medicine ball russian twist in VALDA, with these cues one tap away while you train and your history for it in one place.
General information about exercise technique, not medical advice. If you have an injury or a health condition, your healthcare provider is the right person to ask.