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Outline
To investigate the correlation between sleep fragmentation and body composition/blood pressure in female students of middle school, so as to provide theoretical guidance for preventing health risks associated with sleep fragmentation.
From September 2022 to December 2023, 505 female students aged 12-15 years in Nanyang City were selected through stratified cluster random sampling and conducted Pittsburgh Sleep Quality Index(PSQI) survey. Participants were divided into Q1-Q4 groups based on sleep fragmentation index (SFI) quartiles. Body composition and blood pressure measurements were measured by adopting body composition analyzer and traditional mercury sphygmomanometer, and data were analyzed using χ2 tests and linear regression.
Significant intergroup differences for Q1-Q4 were observed with increasing SFI levels for body mass index(BMI), fat percentage, muscle mass, bone mass, trunk fat percentage, systolic blood pressure, diastolic blood pressure, and PSQI total scores (F=15.25, 7.33, 8.38, 5.97, 11.24, 16.85, 6.87, 15.73, all P < 0.05). SFI showed positive correlations with BMI, fat percentage, trunk fat percentage, and blood pressure(β=0.37, 0.45, 0.34, 0.42, 0.38), but negative correlations with muscle mass and bone mass(β=-0.35, -0.48) (all P < 0.05). The χ2 trend test revealed a significant increase in hypertension detection rates with elevated SFI (χ2=42.75, P < 0.05). The χ2 testing demonstrated statistically significant differences in hypertension incidence among different quartiles groups (χ2=14.16, P < 0.05). After adjusting the significance level, hypertension incidence differences remained significant between Q1and Q4 (χ2=10.77), Q2 and Q4 groups (χ2=6.28) (both P < 0.008 3).
Sleep fragmentation correlates significantly with body composition and blood pressure indicators in female students of middle school. Implementing sleep fragmentation interventions is essential for safeguarding female students' health in middle school.
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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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