Journal of Korean Academy of Nursing

Research Paper

Influences of Autonomic Function, Salivary Cortisol and Physical Activity on Cognitive Functions in Institutionalized Older Adults with Mild Cognitive Impairment: Based on Neurovisceral Integration Model: Suh, Minhee; J Korean Acad Nurs 2021;51(3):294-304. Published online June 30, 2021; DOI: https://doi.org/10.4040/jkan.20282

Purpose
This study aimed to investigate objectively measured physical activity (PA) in institutionalized older adults with mild cognitive impairment (MCI) and to elucidate the influence of autonomic nervous function, salivary cortisol, and PA on cognitive functions based on neurovisceral integration model.
Methods
Overall cognitive function was evaluated using the mini-mental state examination (MMSE) and executive function was evaluated using semantic verbal fluency test and clock drawing test. Actigraph for PA, HRV and sAA for autonomous function, and the geriatric depression scale for depression were used. Saliva specimens were collected in the morning for sAA and cortisol.
Results
Ninety-eight older adults from four regional geriatric hospitals participated in the study. They took 4,499 steps per day on average. They spent 753.93 minutes and 23.12 minutes on average in sedentary and moderate-to-vigorous activity, respectively. In the multiple regression analysis, lower salivary cortisol level (β = - .33, p = .041) and greater step counts (β = .37, p = .029) significantly improved MMSE score. Greater step count (β = .27, p = .016) also exerted a significant influence on verbal fluency, and greater sAA (β = .35, p = .026) was significantly associated with a better clock drawing test result.
Conclusion
Salivary cortisol, sAA and physical activity were significantly associated with cognitive functions. To prevent older adults from developing dementia, strategies are needed to increase their overall PA amount by decreasing sedentary time and to decrease salivary cortisol for cognitive function, and to maintain their sympathetic nervous activity for executive function.

Citations

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Rest-activity circadian rhythm in hospitalized older adults with mild cognitive impairment in Korea and its relationship with salivary alpha amylase: an exploratory study
Minhee Suh, Jihye Choi
Journal of Korean Biological Nursing Science.2023; 25(4): 306. CrossRef
Circadian Rhythm Changes in Healthy Aging and Mild Cognitive Impairment
Ahmadreza Keihani, Ahmad Mayeli, Fabio Ferrarelli
Advanced Biology.2023;[Epub] CrossRef
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Frontiers in Physiology.2023;[Epub] CrossRef

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Original Article

Development and Effects of Smartphone App-Based Walking Exercise Program for Taxi Drivers: Based on Bandura’s Self Efficacy Theory: Choi, Yun Ha , Chae, Min-Jeong; J Korean Acad Nurs 2020;50(2):242-254. Published online April 30, 2020; DOI: https://doi.org/10.4040/jkan.2020.50.2.242

Abstract PDF

Purpose
The purpose of this study was to examine the effects of smart-phone app-based walking exercise programs for taxi drivers on self-efficacy and outcome expectations for exercise, health-related quality of life, walking as an exercise, and physiological indexes.
Methods
A nonequivalent control group with a pre-post-test design was used. The subjects were recruited in G metropolitan city. Subjects were assigned to the experimental (n=31) or control groups (n=30). The smart phone app-based walking exercise program consisted of educations via the app, twelve short message services, and one individual telephone counseling session, which was spread over 12 weeks.
Results
Self-efficacy, outcome expectations, and health-related quality of life had significantly higher pre-post test differences in scores in the experimental group. Additionally, blood pressure, body mass index, and waist circumference had significantly decreased prepost- test difference levels in the experimental group. Walking as an exercise (which consisted of days walked, number of steps walked, and amount of time walked) had significantly increased in the experimental group after 7~12 weeks in the period following the intervention program rather than 1~6 weeks after the program.
Conclusion
The smart phone app-based walking exercise program based on the self-efficacy theory demonstrates a significant effect on improving self-efficacy, outcome expectations physical activities, and health-related quality of life for taxi drivers. Therefore, it is recommended to actively use the program as a tool to promote self-efficacy, physical activities, and health behaviors in taxi drivers.

Citations

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Journal of Health Informatics and Statistics.2023; 48(Suppl 1): S1. CrossRef
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515 View
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