Conclusion
Supervised group exercise did not improve psychological well-being at 29–34 weeks of gestation among pregnant women with depression or at high risk of depression. Eight weeks postpartum women in the intervention group had a higher mean WHO-5 than women in the control group, which may be due to the exercise itself but also due to the participants’ experience of peer support. Based on our results, supervised exercise in groups is a safe complementary course of treatment alongside the existing antenatal care. Further studies are needed to explore the effect of supervised group exercise among sedentary pregnant women with or at high risk of depression.