The plank leg raise is an isometric abdominal exercise that targets the muscles of the core, the deep core or transversus abdominis in particular. It also targets the muscles of the glutes and hips. It can be performed for time or reps in the ab-focused portion of any workout.
Forces the core to stabilize and brace while the lower body moves
Requires no equipment
Trains hip extension during core bracing
Simple way to progress when elbow planks become too easy
Can add pauses or holds to further increase difficulty