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Outline
To analyze the correlation between the levels of vitamin A, vitamin D, vitamin E with body fat mass percentage (FMP) as well as lifestyle factors among primary school students, so as to provide references for exploring the vitamin nutritional status of primary school students and its potential influencing factors.
From September 1 to October 30, 2021, a cluster sampling method was used to select 750 third-grade students from eight primary schools in Luohu District, Shenzhen.Their body composition was measured, and blood samples were collected to detect the serum levels of vitamin A, vitamin D, and vitamin E using a mass spectrometer.Dietary and exercise habits were collected through questionnaires.Mann-Whitney U test and Kruskal-Wallis H rank sum test were used for inter-group comparisons, spearman correlation was used for correlation analysis, and Logistic regression model was used to analyze the association between lifestyle and vitamin content.
The overall level of vitamin A in school-aged children was 0.4(0.4, 0.5) mg/L, with a deficiency rate of 0 and a marginal deficiency rate of 5.1%;the level of vitamin D was 26.0(22.0, 30.0) ng/mL, with a deficiency rate of 0.4% and an insufficiency rate of 12.7%;the content of vitamin E was 11.8(10.1, 13.5) mg/L, with an insufficiency rate of 0.8%.Spearman correlation analysis showed that vitamin A was positively correlated with FMP in the total population, boys, girls, and normal weight population (r=0.18, 0.18, 0.20, 0.10), and vitamin D was positively correlated with FMP in the total population and obese population (r=0.08, 0.16)(all P < 0.05).Logistic regression analysis showed that marginal deficiency of vitamin A was associated with consumption of animal, snack, and dairy/egg/bean foods (OR=0.45, 0.55, 0.59);whether vitamin D was deficient was influenced by gender (OR=2.65) and exercise (OR=1.96)(all P < 0.05).
Vitamin A, vitamin D and vitamin E levels are associated with body fat percentage, with significant variations in vitamin status among individuals of different body types, necessitating targeted supplementation.
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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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