Elbow To Knee Side Plank Crunch (Left)
Elbow To Knee Side Plank Crunch (Left) Exercise Description
Elbow to Knee Side Plank Crunch (left) is a dynamic side-plank variation that targets the lateral core while demanding strong shoulder and hip stability on the left side. From a left-forearm base, the top (right) knee moves toward the top elbow, adding controlled trunk compression to the isometric hold. Primary muscles include the external and internal obliques and transverse abdominis; the quadratus lumborum assists in lateral stability, while the gluteus medius/minimus help keep the pelvis stacked. The left serratus anterior, rotator cuff, and other scapular stabilizers support the shoulder by maintaining a packed, non-shrugged position. The goal is to keep a straight, neutral line from head to heels and resist rotation as the leg moves, so the ribs and pelvis approximate on the right without collapsing the left side. Use smooth, precise motion and steady breathing to maintain alignment and control throughout each crunch.
- Muscle Groups: Abs, Core, Obliques, Waist
- Target Muscles: External Obliques, Internal Obliques, Transversus Abdominis
- Assisting Muscles: Iliocostalis
- Stabilizing Muscles: Gluteus Medius, Infraspinatus, Quadratus Lumborum, Serratus Anterior, Subscapularis
- Body Area: Upper Body
- Body Parts: Core, Torso
- Body Surface: Front, Side
- Body Symmetry: Unilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Core Stabilizers, Trunk Lateral Flexors, Trunk Rotators
- Joint Involvement: Multi-joint
- Muscle Location: Deep Abs, Deep Side Abs, Side Abs
- Movement Direction: Rotational
- Muscle Position: Anterior, Lateral
- Gender: Female
How To Do The Elbow To Knee Side Plank Crunch (Left) Exercise
‘- Lie on your left side with the left forearm on the floor, elbow directly under the shoulder.
– Stack your feet (or stagger with the right foot in front) and align head, ribs, pelvis, and legs.
– Brace the abdominal wall; press the forearm and edge of the feet into the floor to lift into a straight line.
– Keep the left shoulder packed: depress and slightly protract the scapula; neck neutral, eyes forward.
– Place the right hand lightly behind the right ear; avoid pulling on the head.
– Exhale; draw the right knee toward the right elbow by flexing the right hip and gently bringing right ribs toward right pelvis.
– Keep hips stacked and squared forward; prevent sagging or piking of the left hip.
– Briefly meet knee and elbow (or approach contact) without forcing or twisting.
– Inhale; re-extend the right leg to the starting side-plank position while maintaining shoulder-over-elbow alignment.
– Move smoothly, keeping tension through the trunk and glutes, and avoid letting the left shoulder shrug toward the ear.
Elbow To Knee Side Plank Crunch (Left) Tips
‘- Position the left elbow directly under the shoulder before lifting into the plank.
– Stack your feet (or stagger with the right foot in front) and align head, ribs, pelvis, and legs in one line.
– Brace the abdominal wall and press the left forearm and edge of the feet into the floor to lift into a straight, neutral line from head to heels.
– Keep the left shoulder packed by depressing and slightly protracting the scapula, and avoid letting it shrug toward the ear.
– Maintain a neutral neck with eyes forward throughout the movement.
– Place the right hand lightly behind the right ear and avoid pulling on the head.
– Exhale as you flex the right hip, drawing the right knee toward the right elbow while gently bringing the right ribs toward the right pelvis.
– Keep hips stacked and squared forward, preventing sagging or piking of the left hip and resisting rotation as the leg moves.
– Let the knee and elbow briefly meet or approach contact without forcing or twisting, and avoid collapsing the left side as the right ribs and pelvis approximate.
– Inhale as you re-extend the right leg to the starting side-plank position, maintaining shoulder-over-elbow alignment, smooth motion, trunk and glute tension, and steady breathing.
Elbow To Knee Side Plank Crunch (Left) Beginner Introduction
Elbow to Knee Side Plank Crunch (left) blends a held side plank with a controlled crunch motion to challenge the entire midsection. The body supports itself on the left forearm and edge of the feet while the right leg and right side of the trunk move together. This combination places strong demand on the side abs and deep abs, along with the side of the lower back, as the torso shortens on the right without collapsing on the left. At the same time, the left glutes, hip area, and chest-side muscles under the shoulder contribute to a stable, stacked position.
The shoulders and smaller supporting muscles around the left shoulder joint work hard to hold the upper body steady as the right knee travels toward the right elbow. The movement emphasizes a long, straight shape from head down to the heels, steady breathing, and a smooth tempo so that the ribcage and pelvis draw closer together on the right side in a controlled way. This creates a challenging blend of balance, strength, and rotational control for the core.