Hips pike up on every knee drive
Body rises to accommodate the hip flexion; core disengages.
Overactive muscles
Hip flexorsLatissimus dorsi
Corrective work
Foam RollLats↗Foam RollHip flexors↗StretchLat stretch (kneeling overhead)↗Body rises to accommodate the hip flexion; core disengages.
Partial hip extension means the glute and hip flexor never reach full range.