Knees bend to achieve the pike
Hamstring tightness prevents the straight-leg pike; flexibility is the limiter.
Overactive muscles
HamstringsGastrocnemius
Corrective work
Foam RollHamstrings↗StretchHamstring stretch with strap↗Hamstring tightness prevents the straight-leg pike; flexibility is the limiter.
The spine moves as a flat plank; the Pilates quality of the movement is lost.