Straight Leg Dead Bug
Straight Leg Dead Bug Exercise Description
The Straight Leg Dead Bug is a supine, anti-extension core exercise that trains lumbopelvic stability while the limbs move in a contralateral pattern. Keeping the lumbar spine neutral against the floor, you resist arching as the lever arm of straight legs increases the demand on the anterior core. Primary stabilizers include the rectus abdominis, transverse abdominis, and internal/external obliques, with the hip flexors and shoulder flexors acting as movers under control. This variation emphasizes rib control, pelvic positioning, and coordinated cross-body movement without stressing the spine. It’s a precise way to practice bracing and breathing so the trunk stays quiet while the arms and legs travel, reinforcing efficient movement mechanics for everyday tasks and athletic patterns.
- Muscle Groups: Delts, Hips, Shoulders
- Target Muscles: Deltoid - Anterior, Psoas Major
- Assisting Muscles: Iliacus, Pectoralis Major - Clavicular Head, Rectus Femoris
- Stabilizing Muscles: External Obliques, Internal Obliques, Rectus Abdominis, Serratus Anterior, Transversus Abdominis
- Body Area: Lower Body, Upper Body
- Body Parts: Hips, Legs, Shoulders, Upper Legs
- Body Surface: Front
- Body Symmetry: Unilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Hip Flexors, Shoulder Flexors
- Joint Involvement: Multi-joint
- Muscle Location: Front Shoulder, Hip Flexor
- Movement Direction: Vertical
- Muscle Position: Anterior
- Gender: Male
How To Do The Straight Leg Dead Bug Exercise
‘- Lie on your back with arms straight above shoulders and legs extended, hips flexed to about 90 degrees, knees straight, ankles neutral.
– Posteriorly tilt the pelvis to gently press the low back into the floor; ribs down; brace the abdomen.
– Keep head and neck neutral; shoulder blades lightly anchored to the floor (no shrugging).
– Inhale to prepare. On a controlled exhale, lower one straight leg toward the floor as the opposite arm reaches overhead.
– Stop before the low back lifts or ribs flare; pelvis stays level without rotation.
– Return to the start with control, then alternate sides.
– Move slowly, keep the brace consistent, and avoid momentum or breath-holding.
– If your low back wants to arch, reduce the lowering distance to maintain neutral spine.
Straight Leg Dead Bug Tips
‘- Set up with arms straight above your shoulders and legs extended, hips flexed to about 90 degrees, knees straight, ankles neutral.
– Posteriorly tilt your pelvis to gently press your low back into the floor before you start moving.
– Keep your ribs down and abdomen braced so your trunk stays quiet as the limbs move.
– Maintain a neutral head and neck with shoulder blades lightly anchored to the floor (no shrugging).
– Inhale to prepare, then lower the opposite arm and straight leg on a slow, controlled exhale.
– Stop the lowering motion before your low back lifts off the floor or your ribs flare.
– Keep your pelvis level and avoid any rotation as the arm and leg travel.
– Move slowly, maintaining a consistent brace and avoiding momentum or breath-holding.
– If your low back wants to arch, reduce how far you lower your leg to maintain a neutral spine.
Straight Leg Dead Bug Beginner Introduction
The Straight Leg Dead Bug is a floor-based core stability exercise centered on maintaining a steady midsection while the arms and legs move in opposite directions. Performed lying on the back with the legs extended and lifted, it uses the weight and length of the straight legs to challenge the front of the core, deep abs, and side abs. The hip flexors and shoulders create the limb motion, while the middle of the body resists any unwanted bending or arching in the lower back.
This drill highlights calm, controlled breathing and a steady ribcage and pelvis as the limbs alternate. The goal is a quiet, steady trunk with smooth, cross-body coordination, similar to walking or running patterns, but practiced in a supported position on the floor. Because the spine stays in a comfortable, supported alignment, the movement helps build awareness of how to tense the midsection while breathing naturally, reinforcing efficient mechanics that can carry over into daily activities and sports.