Abstract: Objective To obtain the fat base value and the fat distribution characteristics of Han adults in Liaoning by measuring their fat content with a bioelectrical impedance method.Methods We randomly selected 1034 healthy adults whose parents are Han in Liaoning (379 males, 655 females). They had signed the informed consent. We detected all subjects with the body composition analyzer and concluded the total fat, to fat weight, visceral fat level, left upper limb (left lower limb, right upper limb, right lower limb, trunk) fat content, then worked out the body fat ratio, and left upper limbs (left lower limb, right upper limb, right lower limb, trunk) fat ratio. All the collected data were analyzed with SPSS (statistical software) and processed by independent sample t test and variance analysis. Results In the majority, the total (limbs or trunk) fat content of males was lower than females ( EM>P /EM><0.01), while male visceral fat level was obviously higher than females (EM> P/EM> <0.01). In males, the total and each part fat content increased with age, which were two peaks, one in 40 age group,and another in 60 and above age group. The male visceral fat level was in a growing state all the times. In females, the total fat content and upper limbs and trunk fat content were increasing all the times, and the lower limbs fat content’s peak was in 50 age group. Female visceral fat level was in rising trend except 50 age group. Conclusion The male total fat and trunk, limb fat contents of Han nationality adults in Liaoning were lower than females, but the male visceral fat level was higher than females. Liaoning Han adult fat content changed with age, and the general was rising, but it was somewhat different in different genders or different parts.

Key words: Fat, Liaoning, Han nationality, Bioelectrical impedance analysis method, Adult