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Ethnic differences in CT derived abdominal body composition measures: a comparative retrospect pilot study between
Mia Solholt Godthaab Brath1,2,3, Marina Sahakyan4, Esben Bolvig Mark3,5
1Department of Respiratory Medicine, Aalborg University Hospital, Aalborg, Denmark.
International Journal of Circumpolar Health
|February 5, 2024
Summary
Body composition differs between Inuit and European adults, particularly in women. This highlights the need for Inuit-specific body composition models for accurate health risk assessment.
Area of Science:
- Anthropology
- Medical Imaging
- Human Biology
Background:
- Ethnic variations in body composition are critical for health risk assessment.
- Existing body composition models may not be universally applicable.
- Limited data exists on body composition within the Inuit population.
Purpose of the Study:
- To compare body composition between Inuit and European adults.
- To investigate demographic influences on body composition measurements.
- To inform the development of Inuit-specific body composition models.
Main Methods:
- Retrospective analysis of 50 adults (29 Inuit, 21 European) undergoing computed tomography (CT) scans.
- Measurement of skeletal muscle index (SMI), fat indices, and tissue densities at the third lumbar vertebra.
- Statistical analysis using Wilcoxon-Mann-Whitney test and multiple linear regression.
Main Results:
- Inuit women exhibited higher fat indices and lower muscle/fat densities than European women.
- Inuit men showed lower intramuscular fat density compared to European men.
- Skeletal muscle density decreased with Inuit ethnicity and age; visceral fat index increased with age.
Conclusions:
- Significant ethnic differences in body composition exist, especially in women.
- The findings underscore the necessity for Inuit-specific body composition models.
- Further research is crucial for precise Inuit health risk assessment.
