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NCT Number: NCT04960670

LIMIT Early Adiposity Rebound in Children

Childhood obesity is a strong predictor of adult obesity with health and economic consequences for the individual and society. Adiposity rebound (AR) is a rise in the Body Mass Index occurring between 3-7 years. Early adiposity rebound (EAR) occurs at a median age of 2 years and is a risk factor for later obesity. Events happening in "the first 1,000 days" play a role in obesity development. One of the key elements in this crucial time window is the gut microbiome, a highly dynamic organ that is sensitive to environmental exposure being linked to obesity development. Prenatal (dietary/lifestyle maternal factors and environmental exposure) and postnatal determinants (the type of feeding, sleep patterns, speed of growth) and environmental obesogenic pollutants may influence the infant microbial colonization, thus increasing the risk of EAR onset.

LIMIT will holistically identify the longitudinal interplay between the intestinal microbiome and infant/maternal nutritional and lifestyle habits, environmental factors exposure and anthropometric measurements, in children with AR vs EAR, driving new mechanistic insights to create an EAR predictive model.

The study will evaluate a group of 150 mother-infant pairs, during the first four years of life at different follow-up.

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Key information

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

  • Inclusion criteria: i) Infants of both sexes born to vaginal/caesarean delivery; ii) Gestational age: 37-42 weeks; iii) Italian-speaking parent; iv) 7 Ability of the parent/guardian to give informed consent; v) Ability of the mother to answer questionnaires.
  • Exclusion Criteria: i) Infants with genetic/congenital diseases; ii) Infants selected for another clinical study; iii) Infants hospitalized immediately after birth; iv) Presence of gestational diabetes; v) Presence of hyperthyroidism during pregnancy; vi) Parents refusing to sign the informed consent.

Treatment and study plan

Evaluation of microbiome and maternal/infant lifestyle

Other

Identification of the longitudinal interplay between the intestinal microbiome and infant/maternal nutritional and lifestyle habits, environmental factors exposure and anthropometric measurements, in children with adiposity rebound vs children with early adiposity rebound.

Primary outcomes

  1. Infant's intestinal microbiome assessment - relative abundance

    Time frame: 0-48 month

    To investigate the infant's intestinal microbiome development (0-48 months) by identifying the relative abundance of the dominant microbes.

  2. Infant's intestinal microbiome assessment - microbial diversity

    Time frame: 0-48 month

    To investigate the infant's intestinal microbiome development (0-48 months) by assessing the microbial diversity.

  3. Infant's intestinal microbiome assessment - inter-individual variation

    Time frame: 0-48 month

    To investigate the infant's intestinal microbiome development (0-48 months) by assessing the inter-individual variation.

Secondary outcomes

  1. Adiposity rebound identification

    Time frame: 0-48 month

    To identify adiposity rebound (AR) in children, discriminating between early AR and normal AR.

  2. Infant intestinal microbiome and pre-gestational weight status

    Time frame: 0-48 month

    To identify the longitudinal interplay between infant intestinal microbiome and pre-gestational weight status in children showing early adiposity rebound and in those showing normal adiposity rebound. In brief, maternal height (cm) and pre-pregnancy weight will be registered to calculate pre-gestational body mass index (BMI, Kg/m2).

  3. Infant intestinal microbiome and maternal weight gain

    Time frame: 0-48 month

    To identify the longitudinal interplay between infant intestinal microbiome and maternal weight gain (Kg) during pregnancy in children showing early adiposity rebound and in those showing normal adiposity rebound.

  4. Infant intestinal microbiome and maternal dietary habits

    Time frame: 0-48 month

    To identify the longitudinal interplay between infant intestinal microbiome, and maternal dietary habits in children showing early adiposity rebound and in those showing normal adiposity rebound. Dietary habits will be evaluated by using a previously validated questionnaire.

  5. Infant intestinal microbiome and maternal physical activity

    Time frame: 0-48 month

    To identify the longitudinal interplay between infant intestinal microbiome and maternal physical activity during pregnancy in children showing early adiposity rebound and in those showing normal adiposity rebound. Physical activity will be evaluated by using a previously validated questionnaire.

  6. Infant intestinal microbiome and mode of delivery

    Time frame: 0-48 month

    To identify the longitudinal interplay between infant intestinal microbiome and mode of delivery (vaginal delivery vs. caesarean section delivery) in children showing early adiposity rebound and in those showing normal adiposity rebound.

  7. Infant intestinal microbiome and lactation

    Time frame: 0-48 month

    To identify the longitudinal interplay between infant intestinal microbiome and lactation (breastfeeding vs. formula feeding) in children showing early adiposity rebound and in those showing normal adiposity rebound.

  8. Infant intestinal microbiome and maternal endocrine disruptors chemicals (EDCs) exposure

    Time frame: 0-48 month

    To identify the longitudinal interplay between infant intestinal microbiome and maternal EDCs exposure (e.g. BPA, phthalates) in children showing early adiposity rebound and in those showing normal adiposity rebound.

  9. Infant intestinal microbiome and dietary habits

    Time frame: 0-48 month

    To identify the longitudinal interplay between infant intestinal microbiome and dietary habits in children showing early adiposity rebound and in those showing normal adiposity rebound. Infant dietary habits will be evaluated by using a previously validated questionnaire.

  10. Infant intestinal microbiome and infant sleeping habits

    Time frame: 0-48 month

    To identify the longitudinal interplay between infant intestinal microbiome and sleeping habits, in children showing early adiposity rebound and in those showing normal adiposity rebound.

  11. Predictive model

    Time frame: 48-60 month

    To develop a predictive model for the early adiposity rebound risk taking into consideration all maternal and infant factors previously evaluated.

Study contacts

Contact information is provided by the study sponsor or research team.

Hellas Cena, Prof

CONTACT

[email protected]

+390382987542

Ilaria Di Napoli, Dr

CONTACT

[email protected]

+390382987536

Sponsors and collaborators

Lead sponsor

University of Pavia

Other

Registry information

Official study title

LIMIT (LIfestyle and Microbiome InTeraction) Early Adiposity Rebound in Children

Acronym: LIMIT

Important dates

Study start
2021
Primary completion
2025
Study completion
2026
First posted
Jul 14, 2021
Registry last updated
Jul 14, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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