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Relaxing Effects of Breathing Pseudotsuga menziesii and Lavandula angustifolia Essential Oils on Psychophysiological Status in Older Adults

Author

Listed:
  • Ya-Hui Chung

    (Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan)

  • Shiu-Jen Chen

    (College of Nursing and Health, Kang Ning University, Taipei 11485, Taiwan)

  • Ching-Luug Lee

    (Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan)

  • Chun-Wei Wu

    (Department of Horticulture, Hungkuo Delin University of Technology, New Taipei 236354, Taiwan)

  • Yu-Sen Chang

    (Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan)

Abstract

We evaluated the effects of breathing Pseudotsuga menziesii ( P. menziesii ) and Lavandula angustifolia ( L. angustifolia ) essential oils (EOs) during a horticultural activity on older adults. A total number of 92 older adult (71.2 ± 7.7 years old) participants were guided through a leaf printing procedure. In the meantime, water vapor and EOs were diffused in an orderly manner. The heart rate variability-related parameters as well as the brain waves were recorded. In addition, we also collected data for the State–Trait Anxiety Inventory-State (STAI-S) questionnaires before and after the whole indoor natural activity program. The physiological parameters including standard deviation of normal to normal intervals, normalized high frequency (nHF), and high alpha wave increased while the normalized low frequency (nLF), the ratio of LF-to-HF power, high beta wave, and gamma wave decreased following the breathing of P. menziesii and L. angustifolia EOs. These changes indicated a relaxing effect of breathing both EOs during a horticultural activity on older adults. Our results demonstrated a beneficial effect of P. menziesii EO which is as good as a well-known relaxant L. angustifolia EO. This notion was supported by the results of STAI-S. Here we developed an indoor natural activity program for older adults to promote physical and mental health.

Suggested Citation

  • Ya-Hui Chung & Shiu-Jen Chen & Ching-Luug Lee & Chun-Wei Wu & Yu-Sen Chang, 2022. "Relaxing Effects of Breathing Pseudotsuga menziesii and Lavandula angustifolia Essential Oils on Psychophysiological Status in Older Adults," IJERPH, MDPI, vol. 19(22), pages 1-13, November.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:22:p:15251-:d:976882
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    References listed on IDEAS

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    1. Choyun Kim & Chorong Song, 2022. "Physiological and Psychological Relaxation Effects of Fir Essential Oil on University Students," IJERPH, MDPI, vol. 19(9), pages 1-12, April.
    2. Na-Yoon Choi & Yu-Tong Wu & Sin-Ae Park, 2022. "Effects of Olfactory Stimulation with Aroma Oils on Psychophysiological Responses of Female Adults," IJERPH, MDPI, vol. 19(9), pages 1-11, April.
    3. Pei-Chun Tu & Wen-Chen Cheng & Ping-Cheng Hou & Yu-Sen Chang, 2020. "Effects of Types of Horticultural Activity on the Physical and Mental State of Elderly Individuals," IJERPH, MDPI, vol. 17(14), pages 1-13, July.
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    5. Chia-Pin Yu & Chia-Min Lin & Ming-Jer Tsai & Yu-Chieh Tsai & Chun-Yu Chen, 2017. "Effects of Short Forest Bathing Program on Autonomic Nervous System Activity and Mood States in Middle-Aged and Elderly Individuals," IJERPH, MDPI, vol. 14(8), pages 1-12, August.
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