Step by step instructions, muscle activation and variants for the Leg Extension Plank.
The leg extension plank builds core stability and glute strength by alternately lifting one leg off the ground while holding a plank position, forcing the core to resist rotation and maintain alignment. The single-leg lift increases the anti-rotation and anti-lateral-flexion demands placed on the stabilizing muscles.
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The Leg Extension Plank is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.