4.3 Article

The Moderating Role of Sleep Quality on the Association between Neuroticism and Frontal Executive Function in Older Adults

期刊

BEHAVIORAL SLEEP MEDICINE
卷 20, 期 1, 页码 50-62

出版社

ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/15402002.2021.1879809

关键词

neuroticism; frontal executive function; sleep quality; cognitive function

资金

  1. Korean society of geriatric neurology
  2. National Research Foundation of Korea (NRF) Grants - Ministry of Science, ICT & Future Planning [NRF2020M3C1B6112160]
  3. Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2020R1I1A1A01072283]
  4. Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI) - Ministry of Health Welfare [HU20C0271]
  5. Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI) - Ministry of science and ICT, Republic of Korea [HU20C0271]

向作者/读者索取更多资源

The study found that sleep quality has a significant moderating effect on the relationship between neuroticism and frontal executive functions in older adults, indicating that interventions to improve sleep quality, such as cognitive behavioral therapy, can help reduce the risk of cognitive impairment.
Objective/Background: Personality traits are regarded as risk factors for cognitive impairment in older adults, while sleep disturbance and physical inactivity are also considered as modifiable risk factors. Therefore, it could be beneficial to investigate the effects of those modifiable risk factors on the relationship between personality traits and cognitive functions, to prepare appropriate strategies for mitigating cognitive impairment. Participants: A total of 155 cognitively unimpaired older adults were included. Methods: All participants underwent cognitive function tests using the Seoul Neuropsychological Screening Battery and examinations for personality traits using the Big Five Inventory. Individual physical activity and sleep quality were assessed using the International Physical Activity Questionnaire and Pittsburgh Sleep Quality Index, respectively. A hierarchical linear multiple regression analysis was performed to demonstrate the direct association between personality traits and cognitive functions, and the multiple moderator analysis was used to analyze the moderating effects of lifestyle factors on this association. Results: Among the five personality traits, only neuroticism was negatively associated with the frontal executive and visuospatial functions after controlling age, sex, and years of education. Interestingly, the negative relationship between neuroticism and frontal executive function was alleviated in older adults with higher sleep quality. Conclusions: Our findings demonstrated that higher sleep quality has significant moderating effects on the negative association between neuroticism and frontal executive functions in older adults, which suggests intervention for improving sleep quality such as cognitive behavioral therapy can be considered in older adults who have personality traits associated with a high risk of cognitive impairment.

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