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To explore the distribution characteristics of body composition and the current nutritional status of middle-aged and elderly people in some areas of Sichuan.
In this study, people aged 45 to 79 years who participated in the “Natural Population Cohort of West China Hospital, Sichuan University” in Mianzhu city, Longquanyi District and Pixian District of Chengdu city, Sichuan Province from 2020 to 2021 were selected as the research subjects. The body composition was detected by bioelectrical impedance method, and the body composition characteristics and the current situation of overweight and obesity in this population were analyzed.
Fat-related indicators such as visceral fat area and body fat percentage (BFP) were positively correlated with age, and the values in women were significantly higher than those in men (all P < 0.001). Muscle-related indicators such as fat-free mass and skeletal muscle mass index was negatively correlated with age, and the values in men were higher than those in women (allP < 0.001). According to BMI, the overweight and obesity rates in men were 44.32% and 13.05% respectively; the overweight and obesity rates in women were 39.45% and 12.84% respectively. According to BFP, the overweight and obesity rates in men were 16.50% and 70.95% respectively; the overweight and obesity rates in women were 20.87% and 63% respectively. The prevalence of hidden obesity in middle-aged and elderly people was 17.29%. A total of 7 muscle-fat types were detected in the population. Among them, the type of overweight and/or excessive body fat combined with sarcopenia accounted for 25.06% in men and 20.81% in women, and both increased with age.
The proportion of body-fat-type obesity in middle-aged and elderly people in some areas of Sichuan is too high. In the future, it is necessary to comprehensively consider the three aspects of BMI, body fat and muscle A total of 7 muscle-fat types were detected in the population.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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