hi
i dont agree that isolated transverse abdominis strengthening will help in swayback posture.
here i fell there is a need for comprehensive examination of the spine as well as lower limbs,especialy pelvic hip muscle length and strength.
understand the primary course
design the treatment according to that
i dont feel that there is any readymade remedy in postural problems.since the causes vary individually,the treament also needs to be individualised.

eager to see others openions