LiPO Teen (the Lifestyle in Pregnancy and Offspring Teenagers

LiPO Teen (the Lifestyle in Pregnancy and Offspring Teenagers): Identification of Modifiable Risk Factors for Childhood Obesity - a Follow-up of a Randomized Controlled Trial

Steno Diabetes Center Odense, Aarhus University Hospital, University of Aarhus, University of Southern Denmark, Statens Serum Institut

The study is a follow-up of a Randomized Controlled Trial (RCT) performed in 2007-10 - the "Lifestyle in Pregnancy" LiP study. The LiP study included 360 pregnant women with BMI ≥30 kg/m2 from Odense University Hospital and Aarhus University Hospital. The women were randomized to intervention with low-calorie diet and physical activity from gestational age 10-14 in pregnancy and until delivery - or to a standard care control group. The objective of the LiPO-Teen project is to perform a clinical follow-up study of the eligible 301 mothers who completed the trial until delivery with a liveborn child, and their 14 year-old offspring. The overall ambition is to understand whether lifestyle intervention in pregnancy prevents obesity and its complications across generations, with a specific focus on modifiable factors.

LiPO Teen (the Lifestyle in Pregnancy and Offspring Teenagers): Identification of modifiable risk factors for childhood obesity - a follow-up of a randomized controlled trial. The objective of the LiPO-Teen project is to perform a clinical follow-up study of the eligible 301 mothers who completed the trial until delivery with a liveborn child, and their 14 year-old offspring. In the original trial women were randomized 1:1 to intervention or control. The participants (both mother and child in pair) who completed the initial LiP study will be invited to a 2-hour examination now 14 years after the intervention during pregnancy to evaluate the effect of the intervention on both mother and child long term.

The objective of the LiPO-Teen project is to perform a clinical follow-up study of the eligible 301 mothers who completed the trial until delivery with a liveborn child, and their 14 year-old offspring.

Body composition Assessed by Dual-Energy X-ray Absorptiometry (DEXA). Hologic Horizon, serie number: 301872M. Fat mass, lean mass and bone density will be calculated. Fat mass index in both mothers and offspring (Fat mass index (FMI) defined as: FM (kg) / height (m)2).

Continuous glucose monitoring (CGM, DEXCOM G6Pro): 10 days recording of fasting glucose and postprandial glucose values. Glucose variability will be assessed using a device, which performs repeated glucose measurements in the skin providing insights into glucose fluctuations throughout the day and night.

Pattern and level of PA will be measured 7 days (24/7) monitored by activity tracker on the wrist (Actigraph GT3X+).

Standardized sitting measurement, average of 3 measures. Both systolic and diastolic blood pressure will be measured.

Blood samples: The epigenetic profile of DNA samples extracted from whole blood will be characterized by Genome-wide DNA methylation using Infinium MethylationEPIC v2.0 Kit. Principle component and hierarchical clustering analyses will be used to identify associations between methylation patterns and a range of clinical characteristics, biomarkers as well as gene expression levels (RNAseq).

Inclusion Criteria: Mothers in the initial LiP study selected at the baseline study in 2007-2010 Teenagers of mothers in the initial LiP study Exclusion Criteria: • None