Bent Knee Lying Twist
Bent Knee Lying Twist Exercise Description
The Bent-Knee Lying Twist is a supine trunk-rotation exercise that emphasizes controlled lumbar and pelvic motion while keeping the upper back anchored. With the knees bent, the lever arm is shorter, making it easier to manage range and maintain core control. You’ll primarily use the obliques and deep spinal stabilizers to guide and resist rotation, while the hips and gluteal region experience a gentle stretch as the pelvis rolls. The goal is smooth, pain-free rotation with both shoulder blades staying in contact with the floor and the neck in a neutral position. Keep the motion small to moderate, prioritize breathing, and return to center using the abdominals rather than momentum.
- Muscle Groups: Abs, Obliques, Waist
- Target Muscles: External Obliques
- Assisting Muscles: Internal Obliques
- Stabilizing Muscles: Multifidus, Quadratus Lumborum, Rectus Abdominis, Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core
- Body Surface: Side
- Body Symmetry: Other
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Trunk Lateral Flexors, Trunk Rotators
- Joint Involvement: Other
- Muscle Location: Side Abs
- Movement Direction: Rotational
- Muscle Position: Lateral
- Gender: Male
How To Do The Bent Knee Lying Twist Exercise
‘- Lie on your back with knees bent, feet flat hip-width apart. Reach arms out at shoulder height, palms down.
– Set your ribs down gently and keep a neutral neck with eyes up; anchor both shoulder blades to the floor.
– Lightly squeeze the knees together so they move as one unit.
– Inhale to prepare. Exhale as you rotate the pelvis and let both knees roll to one side.
– Stop when the opposite shoulder blade wants to lift or the low back begins to arch.
– Maintain even breathing; keep ribs stacked over the pelvis without flaring.
– Drive through the obliques to bring the knees back to center with control.
– Repeat to the other side, matching the range on both sides.
– Form checks: move slowly, keep knees aligned, and avoid forcing them to the floor. If you feel pinching or tingling, reduce the range and maintain smooth, controlled motion.
Bent Knee Lying Twist Tips
‘- Keep both shoulder blades anchored to the floor as your knees move.
– Lightly squeeze your knees together so they travel as one unit.
– Rotate only until the opposite shoulder blade wants to lift or your low back starts to arch.
– Keep your ribs stacked over your pelvis and avoid letting them flare.
– Exhale as you rotate the pelvis and knees to the side, and maintain even breathing.
– Use your obliques to bring the knees back to center instead of relying on momentum.
– Move slowly and keep your knees aligned as they roll side to side.
– Match the rotation range on both sides for symmetry.
– Maintain a neutral neck with your eyes looking up throughout.
– If you feel pinching or tingling, reduce your range and focus on smooth, controlled motion rather than forcing the knees toward the floor.
Bent Knee Lying Twist Beginner Introduction
The Bent-Knee Lying Twist is a floor-based rotation exercise for the mid-section that blends gentle movement with steady control. The body rests on the back while the legs, held in a bent position, travel together from side to side. With the legs shortened in this way, the turning force on the lower spine is reduced, which can make the motion feel more manageable and easier to guide. Throughout the movement, the upper back stays grounded, so the action centers around the waist and hips rather than the shoulders.
This twisting pattern highlights the side abs and deep core muscles that support the lower back, while the hips and glutes experience a mild, controlled stretch as the pelvis turns. The emphasis stays on smooth, easy motion rather than pushing for extreme range. Breathing rhythm plays an important role, helping the torso stay relaxed while the core, not swinging or jerking, brings the legs back through the middle. The overall theme is calm, deliberate rotation with a stable upper body and a comfortable, pain-free feel.