To comprehend the correlation between handgrip strength and blood pressure as well as vital capacity among pupils in Shiyan City, and furnish a scientific basis for pupils to prevent heart and lung diseases.
In November 2023, a cluster random sampling method was used to measure the height, weight, handgrip strength, blood pressure, vital capacity and other indicators of 1 263 primary school students aged 6-12 years in Shiyan City, Hubei Province. Spearman correlation analysis was used to analyze the correlation between handgrip strength and blood pressure and vital capacity. Quantile regression model was used to analyze the correlation degree of handgrip strength with blood pressure and vital capacity at different quantiles.
A total of 1 263 students aged 6-12 years old were investigated in Shiyan city, including 658 boys and 605 girls. The systolic blood pressure(Z=-3.280), vital capacity(Z=-7.015)and handgrip strength(Z=-5.675)of boys were higher than those of girls (all P<0.05). There was no significant difference in diastolic blood pressure between boys and girls (P>0.05). There were significant differences in systolic blood pressure, diastolic blood pressure, vital capacity and handgrip strength between pupils of different ages and places of residence (all P<0.05). Spearman correlation analysis showed that handgrip strength was positively correlated with systolic blood pressure (r=0.390), diastolic blood pressure (r=0.271) and vital capacity (r=0.636) (all P<0.01). Quantile regression analysis showed that systolic blood pressure increased with the increase of handgrip strength, and the difference was statistically significant (P<0.05). The regression coefficient of handgrip strength was the lowest at the 95th percentile of diastolic blood pressure (β=0.222, 95% CI: -0.139-0.583). Except for the 95th percentile, the regression coefficient of handgrip strength and diastolic blood pressure was statistically significant at the other percentiles (P<0.05). The regression coefficient of handgrip strength was the highest at the 50th quantile of vital capacity (β =59.881, 95% CI: 51.456-68.306), and the correlation between handgrip strength and vital capacity at each quantile was statistically significant (P<0.05).
Handgrip strength is positively correlated with blood pressure and vital capacity. Different levels of handgrip strength have different effects on blood pressure and vital capacity in primary school students. Handgrip strength can be used as an index to reflect blood pressure and vital capacity.
| 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 |