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

Citations to this article as recorded by

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
Changes in stress pathways as a possible mechanism of aerobic exercise training on brain health: a scoping review of existing studies
Cristina Molina-Hidalgo, Chelsea M. Stillman, Audrey M. Collins, Daniel Velazquez-Diaz, Hayley S. Ripperger, Jermon A. Drake, Peter J. Gianaros, Anna L. Marsland, Kirk I. Erickson
Frontiers in Physiology.2023;[Epub] CrossRef

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Original Articles

Effects of Aromatherapy on Stress Responses, Autonomic Nervous System Activity and Blood Pressure in the Patients Undergoing Coronary Angiography: A Non-Randomized Controlled Trial: Eun Jeong Song, Mi Young Lee; J Korean Acad Nurs 2018;48(1):1-11. Published online January 15, 2018; DOI: https://doi.org/10.4040/jkan.2018.48.1.1

Abstract PDF

Abstract Purpose

The purpose of this study was to examine the effects of aromatherapy on stress responses, autonomic nervous system (ANS) activity, and blood pressure in patients hospitalized to receive coronary angiography (CAG).

Methods

A non-equivalent control group with a pretest-posttest design was used. The subjects were patients admitted to the day angiography room to receive CAG at E University Hospital (34 in the experimental group and 30 in the control group). The experimental group treatment was inhalation of the aroma oil blended with lavender, ylang-ylang, and neroli at a ratio of 4:2:1 twice before and after CAG. The measurements of stress index, ANS activity, and blood pressure were performed 5 times as follows: at admission, at pre-CAG after treatment I, at post-CAG, 2 hours after treatment II, and 4 hours after treatment II. The data were analyzed using the Mann-Whitney U Test and repeated-measures analysis of variance.

Results

Significant interactions in the high frequency of ANS (F=5.58, p=.005) were observed between group and time. Stress index (z=2.14, p=.016), systolic blood pressure (z=4.14, p<.005), and diastolic blood pressure (z=3.28, p=.001) were significantly different between the experimental and control groups after 4 hours of treatment II.

Conclusion

The findings showed that aromatherapy was not effective before CAG, but was effective after CAG. Therefore, aromatherapy can be used as a nursing intervention for patients receiving CAG.

Citations

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Effects of Aromatherapy on Changes in the Autonomic Nervous System, Aortic Pulse Wave Velocity and Aortic Augmentation Index in Patients with Essential Hypertension: Jung-Hee Cha, Sun-Hee Lee, Yang-Sook Yoo; J Korean Acad Nurs 2010;40(5):705-713. Published online October 31, 2010; DOI: https://doi.org/10.4040/jkan.2010.40.5.705

Abstract PDF

Purpose

To investigate the effectiveness of aromatherapy on blood pressure, heart rate variability, aortic pulse wave velocity and the aortic augmentation index of essential hypertensive patients.

Methods

Using a coin toss, 22 participants were assigned to the experimental group and 20 to the control. The experimental group was given a blend of oils of lemon (Citrus limonum), lavender (Lavandula angustifolia), and ylang ylang (Cananga odorata) which were prepared in the ratio of 2:2:1, respectively. The control group was given an artificial lemon fragrance of Limonene (35 cc) and Citral (15 cc) mixture. The experiment, inhalation, was conducted for 3 weeks (2 min per inhalation, 2 times per day) to both groups.

Results

There was a noticeable difference in systolic blood pressure between the groups (p=.001), however the difference in diastolic blood pressure between the two groups was not significant. There was a notable difference in sympathetic nerve system activity of heart rate variability (p=.047). However, the differences in aortic pulse wave velocity or the aortic augmentation index were not significant.

Conclusion

Aromatherapy is effective in lowering systolic blood pressure and sympathetic nerve system activity.

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