Type: Core Stability
Primary Muscles: Rectus Abdominis, Transverse Abdominis, Obliques
Secondary Muscles: Lower Back, Hip Flexors
Exercise Key Form:
1. Lie on back, arms extended, knees bent at 90 degrees.
2. Press lower back into the floor to engage core.
3. Extend one arm and opposite leg, keeping movement controlled.
4. Keep core tight and back flat.
5. Return to start, switch sides.
NASM-CPT Tip: Exhale fully on each extension for deeper core engagement. Reduce range if back arches.
Why This Exercise Is Important: Improves core stability, posture, and coordination. Strengthens deep core muscles for better movement and reduced back pain.
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