TY - JOUR
T1 - Mediators of lifestyle behaviour changes in obese pregnant women. Secondary analyses from the DALI lifestyle randomised controlled trial
AU - van Poppel, Mireille N. M.
AU - Jelsma, Judith G. M.
AU - Simmons, David
AU - Devlieger, Roland
AU - Jans, Goele
AU - Galjaard, Sander
AU - Corcoy, Rosa
AU - Adelantado, Juan M.
AU - Dunne, Fidelma
AU - Harreiter, J. rgen
AU - Kautzky-Willer, Alexandra
AU - Damm, Peter
AU - Mathiesen, Elisabeth R.
AU - Jensen, Dorte M.
AU - Andersen, Lise-Lotte
AU - Tanvig, Mette
AU - Lapolla, Annunziata
AU - Dalfra, Maria-Grazia
AU - Bertolotto, Allessandra
AU - Wender-Ozegowska, Ewa
AU - Zawiejska, Agnieszka
AU - Hill, David
AU - Desoye, Gernot
AU - J Snoek, Frank
PY - 2019/1/1
Y1 - 2019/1/1
N2 - A better understanding of what drives behaviour change in obese pregnant overweight women is needed to improve the effectiveness of lifestyle interventions in this group at risk for gestational diabetes (GDM). Therefore, we assessed which factors mediated behaviour change in the Vitamin D and Lifestyle Intervention for GDM Prevention (DALI) Lifestyle Study. A total of 436 women, with pre-pregnancy body mass index ≥29 kg/m 2 , ≤19 + 6 weeks of gestation and without GDM, were randomised for counselling based on motivational interviewing (MI) on healthy eating and physical activity, healthy eating alone, physical activity alone, or to a usual care group. Lifestyle was measured at baseline, and at 24–28 and 35–37 weeks of gestation. Outcome expectancy, risk perception, task self-efficacy and social support were measured at those same time points and considered as possible mediators of intervention effects on lifestyle. All three interventions resulted in increased positive outcome expectancy for GDM reduction, perceived risk to the baby and increased task self-efficacy. The latter mediated intervention effects on physical activity and reduced sugared drink consumption. In conclusion, our MI intervention was successful in increasing task self-efficacy, which was related to improved health behaviours.
AB - A better understanding of what drives behaviour change in obese pregnant overweight women is needed to improve the effectiveness of lifestyle interventions in this group at risk for gestational diabetes (GDM). Therefore, we assessed which factors mediated behaviour change in the Vitamin D and Lifestyle Intervention for GDM Prevention (DALI) Lifestyle Study. A total of 436 women, with pre-pregnancy body mass index ≥29 kg/m 2 , ≤19 + 6 weeks of gestation and without GDM, were randomised for counselling based on motivational interviewing (MI) on healthy eating and physical activity, healthy eating alone, physical activity alone, or to a usual care group. Lifestyle was measured at baseline, and at 24–28 and 35–37 weeks of gestation. Outcome expectancy, risk perception, task self-efficacy and social support were measured at those same time points and considered as possible mediators of intervention effects on lifestyle. All three interventions resulted in increased positive outcome expectancy for GDM reduction, perceived risk to the baby and increased task self-efficacy. The latter mediated intervention effects on physical activity and reduced sugared drink consumption. In conclusion, our MI intervention was successful in increasing task self-efficacy, which was related to improved health behaviours.
KW - Behaviour change
KW - Gestational diabetes
KW - Lifestyle intervention
KW - Mediation
KW - Obesity
KW - Pregnancy
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85061136190&origin=inward
UR - https://www.ncbi.nlm.nih.gov/pubmed/30717227
UR - http://www.scopus.com/inward/record.url?scp=85061136190&partnerID=8YFLogxK
U2 - https://doi.org/10.3390/nu11020311
DO - https://doi.org/10.3390/nu11020311
M3 - Article
C2 - 30717227
SN - 2072-6643
VL - 11
JO - Nutrients
JF - Nutrients
IS - 2
M1 - 311
ER -