Body fat patterning in rural South African black children

Area of Science:

• Human Growth and Development
• Anthropometry
• Body Composition

Background:

• Understanding growth status and body fat distribution is crucial for assessing child health.
• Previous research indicates variations in body composition across different ethnic and geographic populations.
• Fat patterning, the distribution of adipose tissue, can have implications for metabolic health.

Purpose of the Study:

• To investigate growth status, body fatness, and fat patterning in rural South African Black children aged 6-19 years.
• To compare these findings with data from American Black children (NHANES survey).
• To analyze the characteristics of fat patterning, including central-peripheral, ventral-dorsal, and upper-lower body distributions.

Main Methods:

• Cross-sectional study design utilizing two samples of South African Black children.
• Comparison with data from the National Health and Nutrition Examination Survey (NHANES) for American Black children.
• Analysis of skinfold measurements (triceps, biceps, subscapular, suprailiac) using Centripetal Fat Ratio and principal component analysis.

Main Results:

• South African children were consistently smaller, lighter, and less fat than American Black children.
• Despite differences in overall fatness, all three samples exhibited similar fat patterning.
• Principal component analysis identified central-peripheral, ventral-dorsal, and upper-lower body patterning, explaining 99.4% of the variance.

Conclusions:

• Central-peripheral fat patterning may be a species characteristic, while other patterns are individual.
• Prior to adolescence, thinner children show more centralized fat distribution.
• During adolescence, the relationship between fatness level and centralization diminishes.