Intervention group
From 17–22 gestational weeks, the intervention group was offered
supervised group exercise twice a week for 12 weeks at the training
centre at the Rigshospitalet Clinic of Occupational Therapy and
Physiotherapy. The exercise intervention was developed and supervised by
four physiotherapists from Rigshospitalet in accordance with the Danish
national recommendations for exercise during pregnancy
(21). The
intervention is described in details in the study protocol
(19).
To increase compliance, a weekly supportive email was sent to the
participants in the intervention group and the women’s general
practitioners were informed about the intervention. Participation was
recorded by the physiotherapists at each session as a standard
procedure.