Send to

Choose Destination
Am J Perinatol. 2018 Aug;35(10):1006-1011. doi: 10.1055/s-0038-1636531. Epub 2018 Mar 6.

Impact of Peanut Ball Device on the Duration of Active Labor: A Randomized Control Trial.

Author information

Department of Obstetrics and Gynecology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania.
Kaiser Permanente, Downey, California.



To evaluate whether the use of a peanut ball device shortens the duration of active labor in nulliparas.


Single-site, nonblinded randomized trial in nulliparous women admitted for labor or labor induction. English-speaking women > 18 years of age with singleton pregnancies were enrolled. Participants were randomized to the use of peanut ball or usual care upon reaching the active phase of labor (≥ 6 cm cervical dilation) with an epidural. Primary outcome was rate of cervical dilation. Secondary outcomes were rates of cesarean delivery and fetal presentation at time of full dilation or delivery.


Ninety-six patients enrolled; 63 reached full cervical dilation. There was no statistically significant difference in rates of cervical dilation (0.98cm/h vs. 0.79cm/h, p = 0.27) or length of labor (315 minutes vs. 387 minutes, p = 0.14) between the groups. There was no difference in the rates of cesarean delivery (33% vs. 35%, p = 0.8) or occiput posterior presentation. (28% vs. 9%, p = 0.09). Among the subgroup who had labor arrest, fewer patients using the peanut ball experienced arrest of dilation; this approached but did not reach statistical significance (30% vs. 73% p = 0.05).


Use of the peanut ball does not significantly increase rates of cervical dilation or decrease time in active labor.


Supplemental Content

Full text links

Icon for Georg Thieme Verlag Stuttgart, New York
Loading ...
Support Center