Group-based activities with on-site childcare and online support improve glucose tolerance in women within 5 years of gestational diabetes pregnancy

Anne-Sophie Brazeau, Aaron Leong, Sara J Meltzer, Rani Cruz, Deborah DaCosta, Mary Hendrickson-Nelson, Lawrence Joseph, Kaberi Dasgupta, MoMM study group, Simon Bacon, Stephen Stotland, V Tony Chetty, Réjeanne Gougeon, Natasha Garfield, Agnieszka Majdan, Marie-Eve Robillard, Anne-Sophie Brazeau, Aaron Leong, Sara J Meltzer, Rani Cruz, Deborah DaCosta, Mary Hendrickson-Nelson, Lawrence Joseph, Kaberi Dasgupta, MoMM study group, Simon Bacon, Stephen Stotland, V Tony Chetty, Réjeanne Gougeon, Natasha Garfield, Agnieszka Majdan, Marie-Eve Robillard

Abstract

Background: Women with gestational diabetes history are at increased risk for type 2 diabetes. They face specific challenges for behavioural changes, including childcare responsibilities. The aim of this study is to test a tailored type 2 diabetes prevention intervention in women within 5 years of a pregnancy with gestational diabetes, in terms of effects on weight and cardiometabolic risk factors.

Methods: The 13-week intervention, designed based on focus group discussions, included four group sessions, two with spousal participation and all with on-site childcare. Web/telephone-based support was provided between sessions. We computed mean percentage change from baseline (95% confidence intervals, CI) for anthropometric measures, glucose tolerance (75 g Oral glucose tolerance test), insulin resistance/sensitivity, blood pressure, physical activity, dietary intake, and other cardiometabolic risk factors.

Results: Among the 36 enrolled, 27 completed final evaluations. Most attended ≥ 3 sessions (74%), used on-site childcare (88%), and logged onto the website (85%). Steps/day (733 steps, 95% CI 85, 1391) and fruit/vegetable intake (1.5 servings/day, 95% CI 0.3, 2.8) increased. Proportions decreased for convenience meal consumption (-30%, 95% CI -50, -9) and eating out (-22%, 95% CI -44, -0) ≥ 3 times/month. Body mass index and body composition were unchanged. Fasting (-4.9%, 95% CI -9.5, -0.3) and 2-hour postchallenge (-8.0%, 95% CI -15.6, -0.5) glucose declined. Insulin sensitivity increased (ISI 0,120 23.7%, 95% CI 9.1, 38.4; Matsuda index 37.5%, 95% CI 3.5, 72.4). Insulin resistance (HOMA-IR -9.4%, 95% CI -18.6, -0.1) and systolic blood pressure (-3.3%, 95% CI -5.8, -0.8) decreased.

Conclusions: A tailored group intervention appears to lead to improvements in health behaviours and cardiometabolic risk factors despite unchanged body mass index and body composition. This approach merits further study.

Clinical trial registration: ClinicalTrials.gov (NCT01814995).

Figures

Figure 1
Figure 1
Daily servings compared to the Canada’s Food Guide. Data are means and 95% Confidence intervals. Black bars = baseline values; White bars = final values; Hatched white bars = Canada Food Guide recommendation. * A portion of added sugar = 5 g of carbohydrate.
Figure 2
Figure 2
Plasma glucose and plasma insulin during the oral glucose tolerance tests. Black line = baseline; Hatched line = final. PG = Plasma glucose. Data are means and 95% confidence intervals.

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