Russian Twist (On Stability Ball Arms Straight)
Russian Twist (On Stability Ball Arms Straight) Exercise Description
The Russian Twist on a stability ball (arms straight) is a rotational core exercise that targets the external and internal obliques while reinforcing trunk stability. With the upper back supported on the ball and the hips lifted, you rotate the ribcage and shoulders as one unit while keeping the pelvis steady and the spine neutral. Extending the arms lengthens the lever, increasing the demand on the anterior core to resist excessive rotation and extension. The rectus abdominis and transverse abdominis contribute to bracing, while the glutes and hamstrings maintain the bridged body position. Shoulder and scapular stabilizers help keep the arms aligned as the torso moves through a controlled range of motion.
- Muscle Groups: Abs, Obliques, Waist
- Target Muscles: External Obliques
- Assisting Muscles: Internal Obliques
- Stabilizing Muscles: Biceps Femoris - Long Head, Gluteus Maximus, Multifidus, Rectus Abdominis, Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core
- Body Surface: Side
- Body Symmetry: Other
- Equipment: Stability Ball
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Trunk Lateral Flexors, Trunk Rotators
- Joint Involvement: Single-joint
- Muscle Location: Side Abs
- Movement Direction: Rotational
- Muscle Position: Lateral
- Gender: Female
How To Do The Russian Twist (On Stability Ball Arms Straight) Exercise
‘- Sit on the ball, then walk your feet forward until your upper back and shoulders rest on the ball; head supported.
– Plant feet hip-width apart, knees bent; lift hips so your torso forms a straight line from knees to shoulders.
– Reach both arms straight above the chest with hands together; draw shoulders down and back.
– Brace the abdomen (ribs down, neutral spine) and squeeze the glutes to keep hips level.
– Rotate the torso and arms together to one side, allowing the ball to roll slightly under your upper back.
– Keep hips and knees pointing upward; avoid lumbar arching or hip drop.
– Stop within a comfortable range, then return to center under control.
– Repeat to the other side, alternating.
– Breathe steadily; avoid shrugging or rushing the movement.
Russian Twist (On Stability Ball Arms Straight) Tips
‘- Walk your feet forward until your upper back and shoulders rest on the ball with your head supported before starting.
– Lift your hips so your torso forms a straight line from your knees to your shoulders.
– Reach both arms straight above your chest with your hands together, keeping your shoulders drawn down and back.
– Brace your abdomen with ribs down and a neutral spine to reinforce trunk stability.
– Squeeze your glutes to keep your hips level and maintain the bridged body position.
– Rotate your torso and arms together as one unit, allowing the ball to roll slightly under your upper back.
– Keep your hips and knees pointing upward and avoid lumbar arching or hip drop as you rotate.
– Stop the rotation within a comfortable range, then return to center under control.
– Breathe steadily throughout and avoid shrugging or rushing the movement.
Russian Twist (On Stability Ball Arms Straight) Beginner Introduction
The Russian Twist on a stability ball (arms straight) is a core-based rotation drill performed while lying back across a stability ball in a bridge-like position. The ball supports the upper back and shoulders while the hips stay lifted, so the body forms a long line from knees to chest. From this supported bridge, the ribcage and shoulders move together from side to side, creating a smooth turning action through the midsection rather than through the lower back.
This movement places strong emphasis on the side abs, abs, and deep abs as they work together to steady the torso and limit unwanted twisting or arching. The glutes and hamstrings assist by holding the raised-body position, giving the exercise a lower-body stability element as well. With the arms extended straight, the weight of the arms increases the challenge on the front of the core, while the shoulders and nearby upper back muscles contribute to keeping the arms in line. The overall feel is one of slow, deliberate control and steady breathing, rather than speed.