Side Plank With Knee Bend
Side Plank With Knee Bend Exercise Description
The Side Plank with Knee Bend is a frontal‑plane core stability exercise performed on the forearm while the top leg cycles through a controlled knee drive. It primarily challenges the lateral core—external and internal obliques and quadratus lumborum—while the hip abductors (notably gluteus medius) and the shoulder of the supporting arm stabilize the body. Pressing the forearm into the floor promotes scapular stability through the serratus anterior and rotator cuff as you maintain a neutral spine. The knee bend adds limb motion without trunk motion, increasing anti‑rotation and anti‑lateral‑flexion demands. Keep the body in a straight line from head to heels, with stacked shoulders and hips, so the torso stays steady while the leg moves. The goal is smooth, deliberate control: the trunk does not twist, the pelvis stays level, and breathing remains steady throughout.
- Muscle Groups: Abs, Core, Obliques, Waist
- Target Muscles: External Obliques, Quadratus Lumborum
- Assisting Muscles: Internal Obliques
- Stabilizing Muscles: Gluteus Medius, Infraspinatus, Multifidus, Serratus Anterior, Subscapularis
- Body Area: Upper Body
- Body Parts: Back, Core, Lower Back, Torso
- Body Surface: Side
- Body Symmetry: Unilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Spine Stabilizers, Trunk Lateral Flexors, Trunk Rotators
- Joint Involvement: Multi-joint
- Muscle Location: Side Abs, Side Lower Back
- Movement Direction: Lateral
- Muscle Position: Lateral
- Gender: Male
How To Do The Side Plank With Knee Bend Exercise
‘- Lie on your side with legs extended and feet stacked; place your forearm on the floor with the elbow directly under your shoulder.
– Set a straight line from head to heels; ribs down, light abdominal brace, glutes engaged, neck neutral.
– Press the forearm and bottom foot into the floor and lift your hips so shoulders and hips are stacked.
– Actively “push the floor away” to keep the supporting shoulder stable; avoid shrugging.
– Without rotating or dropping the hips, flex the top hip and knee to draw the knee toward your chest.
– Pause briefly; keep pelvis level and spine neutral.
– Return the top leg to the stacked position with control, maintaining hip lift and alignment.
– Breathe continuously; keep movement slow and deliberate.
– Lower with control when finished and switch sides.
Side Plank With Knee Bend Tips
‘- Place your forearm so the elbow is directly under your shoulder before lifting.
– Set a straight line from head to heels with ribs down, light abdominal brace, glutes engaged, and neck neutral.
– Press the forearm and bottom foot into the floor to lift your hips and stack your shoulders and hips.
– Actively “push the floor away” with the forearm to keep the supporting shoulder stable and avoid shrugging.
– As you drive the top knee toward your chest, prevent hip drop or trunk rotation.
– Briefly pause with the knee up while keeping the pelvis level and spine neutral.
– Return the top leg to the stacked position with control, maintaining hip lift and full-body alignment.
– Keep the movement slow and deliberate throughout each rep.
– Breathe continuously rather than holding your breath.
Side Plank With Knee Bend Beginner Introduction
The Side Plank with Knee Bend is a side-lying core stability drill that blends a strong, static base with controlled leg motion. The body is supported on one forearm and the edge of the lower foot, forming a straight line from head to heels while the upper leg moves through a gentle bend at the hip and knee. This combination trains the side abs and nearby lower back muscles to hold the torso steady as the leg moves, emphasizing resistance to twisting or tipping.
Along with the core, the hips and glutes of the upper leg work to support the lifted position, and the shoulder of the grounded arm acts as a sturdy anchor. Pushing down through the forearm encourages an active, stable shoulder and upper body, with the chest and shoulder muscles contributing to a strong base. The movement theme is controlled, deliberate motion of the leg while the trunk stays quiet and aligned, with calm, continuous breathing reinforcing overall stability.