Europe PMC

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Abstract 


Background

The study aimed to determine the proportion of the body segments in relation to the total body mass in healthy people, as well as analyze the composition of each segment and compare these results between sexes.

Methods

A total of 60 young adults (30 men and 30 women) were subjected to a full-body scan by dual energy X-rays absorptiometry (DXA) under standardized conditions. The regions of interest (ROI) were determined by a single trained evaluator. The body was divided into 16 segments to obtain values of total mass, lean mass (LM), fat mass, bone mineral content (BMC), lean mass percentage (%LM) and fat mass percentage (%FM) of each body segment represented by the 16 ROI.

Results

Men presented higher absolute mass in the upper limbs (Δ=32.87%; P<0.05). The proportion of the lower limbs (Δ=6.83%; P<0.05) and trunk (Δ=5.07%; P<0.05) of men is higher than women. In addition, males have more LM in the upper limbs (Δ=42.19%; P<0.05) and trunk (Δ=26.46%; P<0.001), and more BMC in the trunk (Δ=18.78%; P<0.05) and forearms (Δ=32.21%; P<0.05). They also present higher %LM (Δ=6.48%; P<0.001) and lower %FM (Δ=54.43%; P<0.001) than women in the forearms.

Conclusions

The different body segments represent a different percentage of the total body mass in men than in women, as well as men present more LM and BMC in the trunk and upper limbs.

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