Brace collapses at the bottom
Core decompresses during the pause; spine loads in flexion.
Overactive muscles
Erector spinaeHip flexors
Corrective work
Foam RollHip flexors↗StretchHalf-kneeling hip flexor stretch↗Core decompresses during the pause; spine loads in flexion.
Ankle mobility deficit reveals itself when there's no stretch reflex.