Particularly during the second and third trimesters, as the baby grows, the mother’s centre of gravity shifts forwards with the expanding belly. The net effect is that muscles of the back/pelvis and leg become overactive to maintain an upright position. Overworked muscles develop painful, taut bands or trigger points. A skilled massage therapist can reverse these change sin the muscle and serve as an effective coping strategy during pregnancy.
An additional factor leading to muscle overwork during the third trimester, is the release of relaxin, a hormone that selectively targets the ligaments of the spine and pelvis in preparation for the labour. However, the net effect of relaxation of spinal/pelvic ligaments is that muscles work harder to stabilize these joints – additionally contributing to overwork.