Gender differences and age-related changes in body composition of Miao adults in Guangxi Rongshui

doi:10.16098/j.issn.0529-1356.2025.03.011

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Acta Anatomica Sinica ›› 2025, Vol. 56 ›› Issue (3) : 329-335. DOI: 10.16098/j.issn.0529-1356.2025.03.011

Anthropology

Gender differences and age-related changes in body composition of Miao adults in Guangxi Rongshui

LIAO Zhi-hong¹ LAN Ling^2,3 LIU Peng^2,3 ZHOU Li-ning^2,3 GONG Ji-chun^2,3 XU Lin^2,3 DENG Qiong-ying^2,3* YU Hong-rong^2,3*

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Abstract

Objective To investigate gender differences and age-related changes in body composition(BC) among Miao adults in Rongshui, Guangxi Province, and to provide the basis for assessing nutritional status and health. Methods With informed consent, 630 Miao adults (218 males, 412 females) were randomly selected for this study. Body composition was assessed using bioelectrical impedance analysis(BIA). Results Weight, fat-free mass, muscle mass, trunk muscle mass, limb muscle mass, waist-to-hip ratio(WHR), body water, presumtion of bone mass and protein were significantly higher in males than in females. And the fat mass, trunk fat mass, limb fat mass, visceral fat content, subcutaneous fat content and percentage of body fat were significantly higher in females than in males. According to the evaluation of body mass index(BMI) and WHR, the proportion of overweight and obesity of Miao adults was higher than the average level of Miao residents, and their obesity was characterized by central obesity. With age, weight, fat mass, muscle mass, fat-free mass, limb muscle mass, limb fat mass, subcutaneous fat content, percentage of body fat, body water, presumtion of bone mass, and protein of Rongshui Miao adults showed a gradual decreasing trend, while visceral fat content and WHR increased progressively. BMI in male Miao adults, along with BMI, fat mass, trunk fat mass, subcutaneous fat content, percentage of body fat, and body water in female Miao adults, showed a trend of increasing followed by decreasing, peaking at the age of 40-49 years. Conclusion The body composition of Miao adults in Rongshui, Guangxi, exhibits significant gender differences and age-related variation change patterns, which may increase the risk of sarcopenia and metabolic diseases with aging.

Key words

Body composition / Gender difference / Age-related change / Bioelectrical impedance analysis / Miao adult

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LIAO Zhi-hong LAN Ling LIU Peng ZHOU Li-ning GONG Ji-chun XU Lin DENG Qiong-ying YU Hong-rong. Gender differences and age-related changes in body composition of Miao adults in Guangxi Rongshui[J]. Acta Anatomica Sinica. 2025, 56(3): 329-335 https://doi.org/10.16098/j.issn.0529-1356.2025.03.011

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