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Prenatal Yoga - What’s the Evidence?

As practitioners, we understand the value of a yoga practice for multiple systems. Yoga improves cardiovascular function, pulmonary function, improves flexibility, builds strength, improves balance, and cultivates resiliency. Prenatal yoga is deemed safe and widely practiced. Beyond not laying prone after the first trimester, what are modifications for practicing yoga while pregnant? Is there any evidence to demonstrate if specific yoga postures are safe from both the maternal and fetal perspective?

Polis et al set out to determine the safety of specific yoga postures using vital signs, pulse oximetry, tacometry, and fetal heart rate monitoring. The patients were diverse in age, race, BMI, gestational age, parity, and yoga experience. Exclusionary criteria included preeclampsia, placenta previa, bleeding in the 2nd or 3rd trimester, gestational diabetes, BMI greater than 35 and other medical conditions that presented contraindications.

The maternal and fetal responses were tested in 26 yoga postures. The selected postures, much like most yoga classes, offered a variety of physical positions. The standing, seated, twists and balancing postures chosen were: Easy Pose, Seated Forward Bend, Cat Pose, Cow Pose, Mountain Pose, Warrior 1, Standing Forward Bend, Warrior 2, Chair Pose, Extended Side Angle Pose, Extended Triangle Pose, Warrior 3, Upward Salute, Tree Pose, Garland Pose, Eagle Pose, Downward Facing Dog, Child’s Pose, Half Moon Pose, Bound Angle Pose, Hero Pose, Camel Pose, Legs up the Wall Pose, Happy Baby Pose, Lord of the Fishes Pose and Corpse Pose.

Balancing postures were modified to decrease fall risk. Warrior 3, Tree Pose, Eagle Pose, and Half Moon Pose were performed at the wall or using a chair for support. The addition of a yoga block to bring the floor closer to the practitioner was used for Extended Side Angle Pose, Extended Triangle Pose, and Garland Pose.

Four poses that have previously been theorized to be contraindicated were studied in this group. These postures are Child’s Pose, Corpse Pose, Downward Facing Dog, and Happy Baby. No adverse reactions were discovered for this specific population during the intervention or in the 24 hour follow-up as reported by email.

Now that we have this data, what do we do with it?

We have the opportunity to educate our non-high-risk patients that the previously theorized contraindicated postures listed above were safe for the self-selected group in this study. Those who are in high-risk categories should understand that even though yoga is not a high impact activity, there should be clearance from the OB team to ensure expectant mothers are moving as safely as possible. With proper guidance, yoga is a safe form of exercise and stress reduction which can optimize physical and mental health during the prenatal period and prepare for birth.

Dustienne Miller is the author and instructor of Yoga for Pelvic Pain. Join her in Kansas City, MO on April 7, 2018 - April 8, 2018 to learn about treating interstitial cystitis/painful bladder syndrome, vulvar pain, coccydynia, hip pain, and pudendal neuralgia with a yoga approach.


Polis RL, Gussman D, Kuo YH. Yoga in Pregnancy. Obstet Gynecol 2015;126:1237–41

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