Full
Outline
To explore the dynamic relationship between physical exercise and early adolescent insomnia disorder, and to examine the longitudinal mediating role of depressive symptoms in this relationship, providing scientific evidence for promoting the physical and mental health of adolescents.
A total of 1 162 students from four junior high schools in Xiangxi Tujia and Miao Autonomous Prefecture, Hunan Province were selected using cluster convenience sampling and participated in three follow-up surveys. The research tools included the Insomnia Severity Index (ISI), the Physical Activity Rating Scale (PARS-3), and the Patient Health Questionnaire-9 (PHQ-9) for assessing depressive symptoms. Cross-lagged panel modeling (CLPM) was used to analyze the dynamic relationship between physical exercise and insomnia disorder, and to test the longitudinal mediating effect of depressive symptoms.
The detection rates of depressive symptoms were 50.5%, 55.4%, and 48.1%, while those of insomnia disorder were 48.3%, 46.6%, and 50.1% at the three time points. Physical exercise significantly negatively predicted subsequent insomnia disorder (T1→T2:β=-0.087; T1→T3: β=-0.245, allP<0.001). Insomnia disorder also significantly negatively predicted subsequent physical exercise (T1→T2:β=-0.168; T2→T3:β=-0.213, allP<0.001). Depressive symptoms partially mediated the relationship between physical exercise and insomnia disorder (T1 physical exercise→T2 depressive symptoms:β=-0.150, P<0.001; T2 depressive symptoms→T3 insomnia disorder:β=0.110, P<0.001; indirect effect:β=-0.016, 95%CI=-0.025- -0.010, P<0.001). Physical exercise could indirectly affect insomnia disorder through multiple pathways(total indirect effect:β=-0.117,P<0.001).
There is a long-term bidirectional predictive relationship between physical exercise and early adolescent insomnia disorder, and physical exercise can indirectly influence the development of insomnia disorder through depressive symptoms. It is important to emphasize the cultivation of regular physical exercise habits and intervention of depressive symptoms in early adolescence to improve insomnia disorder and promote the physical and mental health development of adolescents.
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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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