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To explore the mediating effect of depressive symptoms on the relationship between handgrip strength and activities of daily living (ADL) in older adults, so as to provide a reference for the prevention and intervention of ADL impairment in this population.
Based on the 2015 survey data from the China Health and Retirement Longitudinal Study (CHARLS), a study was conducted involving 2 344 seniors aged 60 and above. Descriptive analysis and partial correlation analysis were conducted using SPSS 25.0, and the PROCESS macro program was employed to test for mediation effects.
The detection rate of low handgrip strength among elderly individuals in our country is 20.09%, the detection rate of depressive symptoms is 34.94%, and the rate of Activities of Daily Living (ADL) impairment is 20.95%. Handgrip strength is negatively correlated with depressive symptoms (r=-0.055, P<0.01); handgrip strength is also negatively correlated with ADL impairment (r=-0.143, P<0.001), while depressive symptoms are positively correlated with ADL impairment (r=0.259, P<0.001). Depressive symptoms have a partial mediating effect between handgrip strength and ADL in the elderly, with the mediation effect accounting for 12.68%.
Handgrip strength can have a significant impact on the activities of daily living (ADL) of older adults due to symptoms of depression, highlighting the importance of self-exercise for this demographic. Interventions that combine improvements in handgrip strength with a reduction in the risk of depressive symptoms may be effective in maintaining the daily living capabilities of older individuals.
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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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