The relationship and pathways between resting-state EEG, physical function, and cognitive function in older adults.

ABSTRACT

OBJECTIVE: Based on resting-state electroencephalography (EEG) evidence, this study aimed to explore the relationship and pathways between EEG-mediated physical function and cognitive function in older adults with cognitive impairment. METHODS: A total of 140 older adults with cognitive impairment were recruited, and data on their physical function, cognitive function, and EEG were collected. Pearson correlation analysis, one-way analysis of variance, linear regression analysis, and structural equation modeling analysis were conducted to explore the relationships and pathways among variables. RESULTS: FP1 theta (effect size = 0.136, 95% CI 0.025-0.251) and T4 alpha2 (effect size = 0.140, 95% CI 0.057-0.249) were found to significantly mediate the relationship. The direct effect (effect size = 0.866, 95% CI 0.574-1.158) and total effect (effect size = 1.142, 95% CI 0.848-1.435) of SPPB on MoCA were both significant. CONCLUSION: Higher physical function scores in older adults with cognitive impairment were associated with higher cognitive function scores. Left frontal theta and right temporal alpha2, as key observed indicators, may mediate the relationship between physical function and cognitive function. It is suggested to implement personalized exercise interventions based on the specific physical function of older adults, which may delay the occurrence and progression of cognitive impairment in older adults with cognitive impairment.