Abstract: This study analysed the body composition data of 860 female participants of Guangxi minorities including 200 Maonan, 200 Mulam, 244 Hmong and 216 Yao. In comparing body compositions of these four minorities, we found that Hmong had the highest fat mass while Mulam had the lowest; and that Maonan had the highest muscle mass while Hmong had the least, all indicative of statistical significant differences between groups (P<0.05). There were also significant differences in body mass index (Ibm ) and body fat percentage (Pbf ), as well as waist-hip radio(Rwh) among the four groups. Hmong women had the highest percentage of obesity according to BMI or BF% or WHR, with statistically significant differences between the Hmong and other minorities (P<0.05). Fat mass of women in these four groups increased with age, normally reaching a peak by ages 50-54, after which fat mass decreased. Fat-free mass decreased gradually with age. Comparing with the other minorities, the muscle mass of the Maonan decreased with age, and there were statistical differences in body composition between different age groups (P<0.05). Clearly, we have shown that there are ethnic differences in body composition, with Hmong women considered the most unhealthy with excessive fat mass, and lower muscle and bone mass. Our study indicates that all women in the four minority groups may be more prone to sarcopenic obesity and osteoporosis with age.

Key words: Guangxi; Minority; Body composition; Difference; Change