An observational study in Infant Development and Infant Overnutrition, sponsored by Pennington Biomedical Research Center. Recruiting at 1 site in United States. Open to participants aged 1 Month to 3 Months, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-08-10.
Sponsored by Pennington Biomedical Research Center · Observational
The purpose of this study is to measure energy expenditure during the first 3 months of life in infants.
This study intends to establish the feasibility of undertaking comprehensive metabolic phenotyping in infants. The overarching aim is to complete a prospective assessment of energy expenditure in the new infant metabolic chamber approximately one week apart to determine the accuracy and precision of infant protocols related to energy metabolism (sleeping metabolic rate, resting metabolic rate, diet-induced thermogenesis) and physical activity. This cross-sectional study will answer the following questions:
67 studies on the registry are indexed under Infant Nutrition Disorders; 14 are open to participants now.
This study's planned enrollment of 70 is below the median of 203 across 20 observational studies indexed under Infant Nutrition Disorders.
Browse Infant Nutrition Disorders studies →Pennington Biomedical Research Center is the lead sponsor of 284 studies on the registry; 31 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Full-term infants aged 1 to 3 months who are exclusively fed breast milk and/or infant formula will be recruited
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Infants aged 1-3 months
Energy Expenditure by infant metabolic chamber
Energy expenditure by infant metabolic chamber measured twice about 1 week apart for test re-test reliability in infants aged 1-3 months.
Time frame: Approximately 1 week
Energy expenditure by doubly labeled water
Energy expenditure by doubly labeled water measured over approximately 7 days in infants aged 1-3 months
Time frame: Approximately 1 week
Percent body fat
Percent body fat by PEA POD measured twice about 1 week apart for test re-test reliability in infants aged 1-3 months.
Time frame: Approximately 1 week
Physical activity counts
Physical activity counts by Actigraph accelerometer measured over approximately 7 days in infants aged 1-3 months.
Time frame: Approximately 1 week
Plan to share: No
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