Skip to main content

Table 3 Summary of the studies that met the criteria of the systematic review on lifestyle interventions in overweight and obese pregnant women: non-randomised trials

From: Lifestyle interventions for overweight and obese pregnant women to improve pregnancy outcome: systematic review and meta-analysis

Author (year) Ethnic group/country Participants/setting Sample size Intervention Outcome measure(s) Conclusion
Gray-Donald et al. (2000) [38] Native Americans/Canada Recruited before the 26th week of pregnancy, non-parallel recruitment of control and intervention arms.
Mean BMI = 29.6 kg/m2 (SD = 6.45) in non-intervention arm and mean BMI = 30.8 kg/m2 (SD = 6.85) in intervention arm at baseline.
219
107 in non-intervention arm; 112 in intervention arm
Dietary and weight counselling
Exercise groups provided
Gestational weight gain; gestational diabetes;
Caesarean section;
birthweight;
postpartum weight retention
No statistically significant difference in gestational weight gain, prevalence of gestational diabetes, Caesarean section or large for gestational age baby
Olson et al. (2004) [51] 96% white/USA Recruited before third trimester. Hospital and clinic setting
BMI range: 19.8 to 29 kg/m2
498
381 in non-intervention arm; 117 in the intervention arm
Used the Institute of Medicine recommended guidelines on weight gain; 'health book' used to record diet and exercise and contained healthy eating and exercise information Gestational weight gain; birthweight No statistically significant reduction in gestational weight gain or prevalence of large for gestational age baby
Claesson et al. (2007) [36] Not stated. Predominantly Caucasian/Sweden Obese and registered at antenatal care clinic.
BMI ≥ 30 kg/m2
348
193 in non-intervention arm; 155 in intervention arm
Nutritional habits interview, weekly counselling and aqua aerobic sessions Gestational weight gain; Caesarean section. Statistically significant reduction in gestational weight gain; no difference in prevalence of Caesarean section
Kinnunen et al. (2007) [37] Over 90% Caucasian/Finland First-time pregnant women who were obese (BMI ≥ 30 kg/m2) 196
95 in non-intervention arm; 101 in intervention arm
Individual counselling at each antenatal visits. Dietary guidance and optional activity sessions. Gestational weight gain; diet change; birthweight No statistically significant reduction in gestational weight gain or prevalence of large for gestational age baby. Statistically significant reduction in dietary glycaemic load.
Shirazian et al., 2010 [39] 33% blacks; 67% Latino/USA Singleton obese (≥ 30 kg/m2) pregnant women recruited in the first trimester. Historical non-intervention group. 54
28 in non-parallel control arm; 28 in intervention arm)
One-to-one counselling; six structured seminars on healthy living (healthy eating and walking) Gestational weight gain; gestational diabetes; Caesarean section Statistically significant reduction in gestational weight gain; no difference in prevalence of gestational diabetes
Mottola et al., (2010) [35] Not stated/Canada Overweight (BMI ≥ 25 to 29.9 kg/m2) and obese (BMI ≥ 30 kg/m2) pregnant women recruited before 16 weeks' gestation; historical non-intervention group. 65 matched non-parallel control of 260 Individualised nutrition plan; exercise consisted of walking (three to four times per week, used pedometers) Gestational weight gain; Caesarean section; birthweight; peripartum weight retention Possible reduction in gestational weight gain; no difference in prevalence of Caesarean section or large for gestational age baby; minimal effect on peripartum weight retention
  1. BMI: body mass index; SD: standard deviation.