Effect of a specific exercise programme during pregnancy on diastasis recti abdominis: study protocol for a randomised controlled trial.

Introduction: Diastasis recti abdominis (DRA) is a common condition in pregnant and postpartum women.Evidence for the treatment of DRA is both sparse and weak. As thiscondition occurs during the last two trimesters of pregnancy and there is a paucity of high-quality studies on a pregnant population, we will conduct a randomised trial on the effect ofa specific exercise programme during pregnancy on DRA.

Methods And Analysis: This is an exploratory, assessor-blinded, randomised parallel group trial carried out in aprimary healthcare setting in a Norwegian city. 100 pregnant women, both primigravida andmultigravida, in gestation week 24 presenting with DRA of ≥28 mm willbe included. Participants will be allocated to either an intervention group or a control groupby block randomisation. The intervention group will participate in a 12-week specific exerciseprogramme. The control group will not participate in any exercise intervention. Data collectionwill take place prior to intervention, postintervention at gestation week 37, and 6 weeks, 6and 12 months postpartum. The primary outcome measure will be change in the inter-rectidistance, measured by two-dimensional ultrasonography. Data will be analysed and presentedin accordance with international Consolidated Standards of Reporting Trials guidelines and analysed according to the intention-to-treat principle.

Ethics And Dissemination: Ethical approval has been obtained by the regional ethical committee (76296), and allprocedures will be performed in adherence to the Helsinki declaration. The study has beenregistered with ClinicalTrials.gov. Results from this study will be presented atscientific conferences and in peer-reviewed scientific journals.

Trial Registration Number: NCT04960800; Pre-results.