Objectives. To investigate if water-gymnastics during pregnancy may reduce
the intensity of back/low back pain and the number of days on sick-leave.
Methods. A prospective, randomized study, One hundred and twenty-nine women
were randomized to participate in water-gymnastics once a week during the
second half of pregnancy and 129 were randomized to a control group. The wo
men in both groups filled in questionnaires in gestational weeks 18, 34 and
within the first postpartum week. Every day from week 18 to labor they ass
essed the intensity of back/low back pain.
Results. Back pain intensity increased during pregnancy. No excess risk for
the pregnancy associated with water-gymnastics was observed. The women par
ticipating in water-gymnastics recorded a lower intensity of back/low back
pain. The total number of days on sick-leave because of back/low back pain
was 982 in the water-gymnastics group (124 women) compared with 1484 in the
control group (120 women). After weeks 32-33, seven women in the water-gym
nastics group compared with 17 in the control group were on sickleave becau
se of back/low back pain (p=0.031).
Conclusions. Intensity of back/low back pain increased with advancing pregn
ancy. There was no excess risk for urinary or vaginal infections associated
with water-gymnastics. Water-gymnastics during the second half of pregnanc
y significantly reduced the intensity of back/low back pain, Water-gymnasti
cs decreased the number of women on sick-leave because of back/low back pai
n. Water-gymnastics during pregnancy can be recommended as a method to reli
eve back pain and may reduce the need for sick-leave.