Lateral Side Plank (Bent Leg)
Lateral Side Plank (Bent Leg) Exercise Description
The Lateral Side Plank (bent leg) is a bodyweight isometric that targets the lateral hip and trunk while reducing leverage to make alignment easier than a full side plank. With knees flexed, you’ll train the gluteus medius/minimus to resist hip drop and the obliques and quadratus lumborum to oppose lateral flexion, while the shoulder complex stabilizes through the supporting forearm. The goal is a straight line from shoulders to knees with ribs and pelvis stacked, maintaining a neutral spine and steady breathing. This variation is useful for learning how to “press the floor away,” engage the underside hip, and control pelvic position without compensating through the low back. Expect strong tension on the underside hip and trunk; the top side remains stacked and quiet. Keep movements minimal—this is about stable, organized posture under load created by gravity, not motion or speed.
- Muscle Groups: Abs, Core, Glutes, Hips, Obliques, Waist
- Target Muscles: External Obliques, Gluteus Medius, Quadratus Lumborum
- Assisting Muscles: Gluteus Minimus, Internal Obliques
- Stabilizing Muscles: Multifidus, Serratus Anterior, Transversus Abdominis, Trapezius - Lower Fibers
- Body Area: Lower Body, Upper Body
- Body Parts: Back, Core, Hips, Legs, Lower Back, Torso, Upper Legs
- Body Surface: Side
- Body Symmetry: Unilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Hip Abductors, Hip Extensors, Spine Stabilizers, Trunk Lateral Flexors, Trunk Rotators
- Joint Involvement: Multi-joint
- Muscle Location: Side Abs, Side Lower Back, Upper Glutes
- Movement Direction: Other
- Muscle Position: Lateral
- Gender: Female
How To Do The Lateral Side Plank (Bent Leg) Exercise
‘- Lie on your side with knees bent ~90°, legs stacked, feet in line with your torso.
– Place your bottom forearm on the floor, elbow directly under the shoulder, palm flat or fist neutral.
– Stack shoulders, ribs, and pelvis; keep head in line with spine and gaze forward.
– Pre-tension: lightly brace the trunk, draw ribs down toward pelvis, and set a neutral spine.
– Press the forearm and bottom knee into the floor and lift your hips until your body forms a straight line from shoulders to knees.
– Keep hips stacked—avoid rolling the top hip backward or forward.
– “Press the floor away” to avoid sinking into the shoulder; feel the serratus engage.
– Drive the underside glute (gluteus medius) to prevent the pelvis from dropping.
– Maintain even breathing; avoid holding your breath.
– Keep the top hand on your hip or along your side without pulling the torso.
– Lower the hips with control to finish, keeping alignment until contact.
– Common errors to avoid: elbow not under shoulder, rib flare, hip sag, trunk rotation, and shrugging the shoulder.
Lateral Side Plank (Bent Leg) Tips
‘- Bend your knees to about 90° with legs stacked and feet in line with your torso before you set up.
– Place your bottom elbow directly under your shoulder with the forearm on the floor.
– Stack shoulders, ribs, and pelvis, keeping your head in line with your spine.
– Lightly brace the trunk and draw the ribs down toward the pelvis to set a neutral spine.
– Press your forearm and bottom knee into the floor to lift until you form a straight line from shoulders to knees.
– Keep hips stacked and avoid rolling the top hip forward or backward.
– “Press the floor away” through the forearm to avoid sinking into the shoulder.
– Drive through the underside glute to stop the pelvis from dropping.
– Maintain even, steady breathing instead of holding your breath.
– Avoid common errors: elbow not under shoulder, rib flare, hip sag, trunk rotation, and shrugging the shoulder.
Lateral Side Plank (Bent Leg) Beginner Introduction
The Lateral Side Plank (bent leg) is a bodyweight hold that emphasizes control rather than movement, using a shortened lever to make positioning more manageable than a full side plank. The body rests on the forearm and the lower leg with bent knees, creating a long, stable line from the upper body down to the knees while breathing stays relaxed and steady. This setup highlights how the body can stay strong and still under the pull of gravity, instead of relying on speed or large motions.
This variation brings special attention to the outside of the hips and the side of the torso. The underside glutes work hard to stop the pelvis from dropping, while the side abs and lower back support the spine so it does not bend sideways. At the same time, the shoulder and upper back of the supporting arm provide a strong base, helping the upper side of the body remain stacked and calm. It serves as a bridge between simpler positions on the floor and more demanding side plank progressions.