• Journal of Naturopathy
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• v.10 no.1
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• pp.19-25
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• 2021

Purposes: This study investigated how saliva cortisol, blood vessel health type, and blood vessel health index changed after forest bathing with subjects in the Samdasu Forest. Methods: After the forest bathing, we measured cortisol change in saliva and heart rate variability with subjects. Results: In the experimental group who took forest bathing for two hours in the Samdasu Forest, the stress cortisol content secreted in saliva decreased significantly compared to the control group (p<.05). Besides, the vascular age type significantly increased (p<.03), and the vascular age index significantly decreased (p<.032).There were no significant results in the control group. Conclusions: It is evaluated that forest bathing in Samdasu Forest in Jeju Island had the effect of reducing saliva cortisol and increasing blood vessel age.

• Journal of Naturopathy
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• v.10 no.2
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• pp.114-119
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• 2021

Background: Many anionic phytoncides exist in the forest. Purpose: This study aimed to measure and investigate the number of negative ions in aerosol composition in Samdasu Forest, Jeju. Methods: We counted the number of negative ions in the aerosol with an anion meter at 17 points in the Samdasu forest area. Results: The average number of negative ions measured at 17 points in the aerosol of the Samdasu forest area was 719.7 ions/cm³, the temperature was 25.2℃, the humidity was 80.9%, the altitude was 503 m, and the wind speed was 0.6 m/sec. When looking at the content of anion number in the air quality in order, the highest place was waterfall-entrance-course R-course B- pine forest- course exit> exit wetland. The highest altitude of the collection point was in the order of pine forest-course R-course exit-waterfall-course B- exit wetland-entrance. The elevation difference in elevation was statistically significant. There was no correlation between altitude and anion content. It could be seen that the air quality fluctuates from time to time. Conclusions: A large amount of anionic phytoncide was contained in the air quality in Samdasu Forest in the over results. Therefore, Samdasu Forest is a helpful area as a place to visiting. The visit to the Jeju region, which has a high content of anionic phytoncide, has provided essential information that it has beneficial conditions for health management.

• Journal of Naturopathy
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• v.10 no.1
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• pp.33-41
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• 2021

Purposes: We studied whether forest bathing is effective in improving the stress of the human body. Therefore, we investigated changes in pulse rate, stress index, and autonomic nervous system after 2 hours of forest bathing on Jeju Samdasu Forest Methods : The study was conducted before and after forest bathing through heart rate variability and questionnaire. Results: After forest bathing, the average pulse rate of the experimental group was significantly increased. The stress index significantly decreased in the post-test in the experimental group. The cumulative stress, sympathetic activity (LF), parasympathetic activity (HF) change, and LF/HF ratio were slightly different from those of post-test in the experimental group, but were not statistically significant. In the survey of job stress average index and state characteristic anxiety index through questionnaire, it decreased significantly after forest bathing (p<.001). Conclusions: The Samdasu forest bathing has been proven effective in enhancing pulse and reducing stress, so it is evaluated that forest bathing is effective in promoting health.