The eve of my daughter’s 5th birthday has me reminiscing about my first pregnancy. I had recently surrendered my ACL on a ski slope and was contemplating surgery when I got confirmation I was pregnant. A seasoned surgeon had told me if I just wanted to return to running and not ski or do cutting sports (without a brace, anyway), I would probably be fine; so, I chose to forego the surgery and was running again 7 weeks later. Being my first pregnancy, I was not sure how hormones would affect my knee stability without an ACL or if the impact was safe for me and the baby or if my doctor would approve of my exercise choice of running. After all, pending ligamentous laxity from hormonal changes made running without an ACL seem risky while pregnant; but, runners tend to be, well, stubborn, when it comes to being able to run.
Deghan et al (2014) discuss the hormone relaxin and its effect on bone, muscle, tendon, ligaments, and cartilage. Interestingly, relaxin actually plays a role in the healing and remodeling of certain tissues in the body such as muscle and bone. However, the article also emphasizes how relaxin has been shown to reduce the integrity of the ACL and put female athletes at risk for injury. Lucky for me, that hormone couldn’t have its way with my knee since the ACL was already gone!
A study in the British Journal of Sports Medicine just published online October 4, 2015, encourages running and other high-impact sports before pregnancy to decrease the risk of pelvic girdle pain. The patients engaging in such exercises prior to being pregnant showed a 14% lower risk of having pelvic girdle pain during pregnancy. Out of 4069 women, 12.5% of the 10.4% of women who experienced pelvic pain were non-exercisers pre-pregnancy. The women who exercised 3-5 days per week and participated in high-impact aerobic exercise prior to being pregnant had less pelvic pain while pregnant.