Big Circular Frog
Plane of Motion
Sagittal & Coronal
Spring Setting
Medium
Medium or Heavy Long Leg Springs
Mid-Pole Hooks
Muscle Focus
Hip Adductors
Adductor Longus, Adductor Brevis, Adductor Magnus, Gracilis, Pectineus
Close the legs together.
Resist the springs to control the opening of the legs.
Build midline connection to the core.
Hip Extensors
Gluteus Maximus, Hamstrings: Semimembranosus, Semitendinosus & Biceps Femoris
Straighten the legs.
Resist the tension as the knees bend.
Knee Extensors
Quadriceps Femoris: Rectus Femoris, Vastus Lateralis, Vastus Intermedius, Vastus Medialis
Straighten the knees.
Resist the tension as the knees bend.
Spinal Stabilizers
Transversus Abdominis, Erector Spinae, Semispinalis, Deep Posterior Spinal Group
Create lumbo-pelvic stabilization.
Keep the trunk stable against the movement of the legs.
Maintain ribcage placement so the ribs don't pop and the back doesn't arch.
Other Muscles at Play
Spinal flexors work with the spinal stabilizers to control ribcage placement and stability of the trunk and pelvis.
Scapular upward rotators allow for overhead reach to push into the bar to keep the shoulders down and wrapped under the armpits.
Scapular depressors keep the shoulders down away from the ears.
Elbow extensors keep the arms straight.
Hip external rotators help maintain the pilates V turnout in the legs.
Objectives
Mobilizes the hips through controlled, spacious movement.
Strengthens the hip and knee extensors to support powerful, well-organized lower-body mechanics.
Refines femur-in-pelvis differentiation, training the hips and spine to stay stable as the legs moves independently.
Builds coordination and reinforces movement memory for more efficient, integrated patterns.
Focus on breathing to synchronize the movement.