Swimming
Plane of Motion
Sagittal
Muscle Focus
Hip Extensors
Gluteus Maximus, Hamstrings: Semimembranosus, Semitendinosus & Biceps Femoris

Spinal Extensors
Erector Spinae, Semispinalis, Deep Posterior Spinal Group

Spinal Stabilizers
Erector Spinae, Semispinalis, Deep Posterior Spinal Group

Other Muscles at Play
Objectives
Builds posterior chain strength by engaging the muscles along the back of the body—including the glutes, hamstrings, and spinal extensors—to support powerful, integrated movement.
Stabilizes the torso against the reciprocating action of the legs in a prone position, maintaining steady abdominal an lumbo-pelvic control as the legs move independently.
Maintains scapular stabilization with the spine in neutral or extension and the arms reaching forward.
Prevents lower-back strain by directing the neutral position or spinal extension through the upper body while the tailbone lengthens toward the feet, creating space and reducing compression in the lumbar region.
Isolates the movement by lengthening the legs out of the hip joints, allowing the pelvis to remain stable while the legs move freely.
Focus on breathing to synchronize the movement.