Russian Twist (on stability ball arms straight)
- Zielmuskel
- Obliques
- Synergistenmuskeln
- Iliopsoas
- Equipment
- Stability ball
- Körperregion
- Waist
- Typ
- Strength
Russian Twist on a stability ball with arms straight is a strength exercise that targets the obliques while recruiting the iliopsoas to stabilize the hip flexor complex. You lie back on the ball so only your upper back is supported, then rotate your clasped hands from side to side with arms extended, forcing the obliques to control rotation against an unstable surface. The ball increases range of motion and demands greater trunk stability than a floor-based version.
Russian Twist (on stability ball arms straight): So führst du sie aus
- 1Sit on the stability ball with your feet flat on the floor, hip-width apart.
- 2Walk your feet forward until the ball sits under your upper back and shoulders, forming a tabletop position with your hips at roughly the same height as your knees.
- 3Extend your arms straight above your chest, clasp your hands together, and keep your elbows locked throughout the movement.
- 4Brace your core and lift your hips so your body forms a straight line from knees to shoulders.
- 5Rotate your clasped hands slowly to the right, following your hands with your eyes while keeping your hips level and your arms fully extended.
- 6Pause briefly when your hands are as far right as your range of motion allows without your hips dropping.
- 7Reverse the rotation and bring your hands back through center, then continue to the left side for one full repetition.
- 8Continue alternating sides for the prescribed number of repetitions, maintaining tension in your obliques throughout.
Technik-Tipps
- Keep your hips elevated and parallel to the floor throughout every rep — letting them drop shifts the work away from the obliques and onto the lower back.
- Lock your elbows and reach your arms as far from your body as possible; a longer lever arm increases the rotational challenge on your obliques.
- Control the tempo in both directions — slow, deliberate rotations produce more oblique tension than fast, momentum-driven swings.
- Press your feet firmly into the floor to maintain balance on the ball, especially at the end range of each rotation.
Häufige Fehler
- Letting the hips sag during rotation, which unloads the obliques and transfers stress to the lumbar spine.
- Bending the elbows to reduce the lever arm, making the exercise easier than intended and reducing oblique recruitment.
- Using momentum to swing the arms rather than rotating under control, which removes time under tension and limits muscle engagement.
- Positioning the ball too low on the back so the core is not fully engaged, reducing the stability demand of the exercise.
- Holding the breath throughout the set, which raises intra-abdominal pressure unnecessarily — exhale as you rotate to each side.
Häufig gestellte Fragen
What muscles does the Russian Twist on a stability ball with arms straight work?
The primary muscle is the obliques, which drive and control rotation. The iliopsoas acts as a synergist, stabilizing the hip flexor complex to keep your hips elevated and your body in a straight line.
How is the stability ball version different from a floor Russian Twist?
On the floor your upper back is fully supported, limiting range of motion and reducing the stability demand. The stability ball supports only your upper back, increasing the range of rotation available and forcing your obliques and core to work harder to prevent the ball from shifting.
How do I make this exercise harder or easier?
To increase difficulty, hold a weight plate between your clasped hands or slow your tempo further. To reduce difficulty, bend your elbows slightly to shorten the lever arm, or position your feet wider for a more stable base on the ball.
How many sets and reps should I do?
Two to four sets of 10–20 repetitions per side is a common range for core conditioning. Count each full rotation — right and left — as one rep, or count each side individually depending on how your program is structured.
Is it normal for my hips to drop during the rotation?
Hip drop is one of the most common technique breakdowns in this exercise. It usually signals that your iliopsoas and glutes are not sufficiently braced. Focus on squeezing your glutes and actively pressing your hips toward the ceiling before you begin each rotation.
