(646) 355-8777

Herman & Wallace Blog

Exercise in Late Pregnancy and Pelvic Floor Hiatus Opening

Exercise in pregnancy is a loaded topic. We commonly see images of women doing vigorous exercise in late pregnancy accompanied by judgmental statements about the safety of such activity not only for the woman, but also for the baby. Many myths persist about exercise in pregnancy, and it’s our role as health care specialists to educate women about what is known about exercising. Holly Herman, co-founder of the Herman & Wallace Pelvic Rehabilitation Institute, has been educating providers about this topic for most of her career. Anyone lucky enough to take a course on pregnancy and postpartum issues from Holly Herman knows that her style of teaching is effective and her passion is contagious. From Holly’s use of patient stories to wonderful humor, you can really “get it” when it comes to clinical concepts and strategies. One of Holly’s clinical pearls that really stuck with me after learning about exercise and pregnancy is the research completed by James Clapp in his book “Exercise in Pregnancy”. In short, the book dispels the myth that women shouldn’t exercise in pregnancy and in fact reports on the benefits of exercise to both Mom and baby for labor, delivery, and beyond. In signature style, Holly held this book up in front of the class and to great laughter said, “And this is the book you should buy for your mother-in-law.”

Another myth that has been perpetuated in relation to pregnancy, labor and delivery is the notion that exercising can make the pelvic floor muscles short, tight, and more narrow, making delivery more difficult. In an article we reported on previously about women being “too tight to give birth” the authors concluded that strong pelvic floor muscles do not lead to challenges with birthing. (Bo et al., 2013) In a more recent article that addressed this issue, Kari Bo and colleagues studied 274 women for levator hiatus (LH) width to see if exercising in late pregnancy did in fact narrow this space. At week 37 of gestation, the exercisers were measured to have a significantly larger LH than the non-exercisers. (Exercisers were defined as women who exercised 30 minutes or more 3 times per week versus the non-exercisers.) The authors conclude that there were not any significant differences in labor outcomes or in delivery outcomes between the groups. (Bo et al., 2015)

Without a doubt, the patient’s obstetrician gives primary direction to the patient when any high-risk issues are present. Most women however, are basing their exercise choices on experience, on misinformation, myths, or popular opinion. It is our responsibility to engage women in conversations about her health, wellness, and fitness, and to appropriately counsel on exercise during pregnancy and the postpartum period. Most of us lacked proper education about this important population in our primary graduate training, and therefore must seek out information to fill in the gaps. If you are interested in filling in any gaps, join us at one of our peripartum courses around the country. Your next opportunities to take these courses are:

Care of the Postpartum Patient - Seattle, WA
Mar 12, 2016 - Mar 13, 2016

Care of the Pregnant Patient - Somerset, NJ
Apr 30, 2016 - May 1, 2016

Care of the Pregnant Patient - Akron, OH
Sep 10, 2016 - Sep 11, 2016


Bø, K., Hilde, G., Jensen, J. S., Siafarikas, F., & Engh, M. E. (2013). Too tight to give birth? Assessment of pelvic floor muscle function in 277 nulliparous pregnant women. International urogynecology journal, 24(12), 2065-2070.


Bø, K., Hilde, G., Stær-Jensen, J., Siafarikas, F., Tennfjord, M. K., & Engh, M. E. (2015). Does general exercise training before and during pregnancy influence the pelvic floor “opening” and delivery outcome? A 3D/4D ultrasound study following nulliparous pregnant women from mid-pregnancy to childbirth. British journal of sports medicine, 49(3), 196-199.


Clapp, J. F., Cram, C. (2012) Exercising Through Your Pregnancy. Addicts Books

Degree of prolapse symptoms
Dig Deeper to Find the Driver

Upcoming Continuing Education Courses

Mobilization of Visceral Fascia: The Gastrointestinal System - Arlington, VA (RESCHEDULED)

Jul 10, 2020 - Jul 12, 2020
Location: Virginia Hospital Center

Mobilization of Visceral Fascia: The Gastrointestinal System

Jul 10, 2020 - Jul 12, 2020
Location: Replacement Remote Course

Postpartum Rehabilitation - Remote Course (SOLD OUT)

Jul 11, 2020 - Jul 12, 2020
Location: Replacement Remote Course

Pelvic Floor Level 1 Part 1 - Remote Course (SOLD OUT)

Jul 11, 2020 - Jul 12, 2020
Location: Short Form Remote Course

Athletes & Pelvic Rehabilitation - Remote Course

Jul 11, 2020 - Jul 12, 2020
Location: Replacement Remote Course

Bowel Pathology and Function - Remote Course (SOLD OUT)

Jul 11, 2020 - Jul 12, 2020
Location: Replacement Remote Course

Pelvic Floor Level 1 - Newark, NJ (Rescheduled)

Jul 12, 2020 - Jul 14, 2020
Location: Rutgers University - Doctoral Programs in Physical Therapy

Pregnancy Rehabilitation - Remote Course

Jul 16, 2020 - Jul 17, 2020
Location: Replacement Remote Course

Postpartum Rehabilitation - Foothill Ranch, CA (RESCHEDULED)

Jul 18, 2020 - Jul 19, 2020
Location: Intercore Physical Therapy

Pelvic Floor Level 1 - Colorado Springs, CO (SOLD OUT)

Jul 18, 2020 - Jul 19, 2020
Location: Manual Edge Physiotherapy

Postpartum Rehabilitation - Remote Course

Jul 18, 2020 - Jul 19, 2020
Location: Replacement Remote Course

Pelvic Floor Level 1- Bangor, ME (Rescheduled)

Jul 18, 2020 - Jul 19, 2020
Location: Husson University

Pelvic Floor Level 1 - Columbus, OH

Jul 18, 2020 - Jul 19, 2020
Location: Fitness Matters

Pelvic Floor Level 1 Part 1 - Remote Course (SOLD OUT)

Jul 21, 2020 - Jul 22, 2020
Location: Short Form Remote Course

Nutrition Perspectives for the Pelvic Rehab Therapist - Columbia, MO (Rescheduled)

Jul 24, 2020 - Jul 26, 2020
Location: University of Missouri-Smiley Lane Therapy Services

Pelvic Floor Level 1 - Chicago, IL (RESCHEDULED)

Jul 25, 2020 - Jul 26, 2020
Location: Advocate Illinois Masonic Medical Center

Pelvic Floor Level 1 - Fayetteville, NC (SOLD OUT)

Jul 25, 2020 - Jul 26, 2020
Location: Methodist University School of Health Sciences

Nutrition Perspectives for the Pelvic Rehab Therapist - Remote Course

Jul 25, 2020 - Jul 26, 2020
Location: Replacement Remote Course

Pelvic Floor Level 2A - Glenwood Springs, CO (SOLD OUT)

Jul 25, 2020 - Jul 26, 2020
Location: Valley View Hospital

Pudendal Neuralgia and Nerve Entrapment - Maywood, IL (RESCHEDULED)

Jul 25, 2020 - Jul 26, 2020
Location: Loyola University Health System

Pelvic Floor Level 2B - Los Angeles, CA (RESCHEDULED)

Jul 25, 2020 - Jul 26, 2020
Location: Mount Saint Mary’s University

Manual Therapy for the Abdominal Wall - Remote Course

Jul 31, 2020
Location: Short Form Remote Course

Parkinson Disease and Pelvic Rehabilitation - Remote Course

Jul 31, 2020 - Aug 1, 2020
Location: Short Form Remote Course

Neurologic Conditions and Pelvic Floor Rehab - Washington, DC

Jul 31, 2020 - Aug 2, 2020
Location: George Washington University Hospital Outpatient Rehabilitation Center

Restorative Yoga for Physical Therapists - Remote Course

Aug 1, 2020 - Aug 2, 2020
Location: Replacement Remote Course

Pelvic Floor Level 2A - Chicago, IL (SOLD OUT)

Aug 1, 2020 - Aug 2, 2020
Location: Midwestern Regional Medical Center

Pelvic Floor Level 2A - Washington, DC (SOLD OUT)

Aug 1, 2020 - Aug 2, 2020
Location: The George Washington University

Pelvic Floor Level 1 - New York City, NY (RESCHEDULED)

Aug 2, 2020 - Aug 3, 2020
Location: Touro College

Pelvic Floor Level 1 - Birmingham, AL (SOLD OUT)

Aug 8, 2020 - Aug 9, 2020
Location: Shelby Baptist Medical Center