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Effects of Forest Therapy on Depressive Symptoms among Adults: A Systematic Review

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  • Insook Lee

    (Faculty of College of Nursing, The Research Institute of Nursing Science, Seoul National University, Seoul 03080, Korea)

  • Heeseung Choi

    (Faculty of College of Nursing, The Research Institute of Nursing Science, Seoul National University, Seoul 03080, Korea)

  • Kyung-Sook Bang

    (Faculty of College of Nursing, The Research Institute of Nursing Science, Seoul National University, Seoul 03080, Korea)

  • Sungjae Kim

    (Faculty of College of Nursing, The Research Institute of Nursing Science, Seoul National University, Seoul 03080, Korea)

  • MinKyung Song

    (College of Nursing, Seoul National University, Seoul 03080, Korea)

  • Buhyun Lee

    (College of Nursing, Seoul National University, Seoul 03080, Korea)

Abstract

This study systematically reviewed forest therapy programs designed to decrease the level of depression among adults and assessed the methodological rigor and scientific evidence quality of existing research studies to guide future studies. This systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The authors independently screened full-text articles from various databases using the following criteria: (1) intervention studies assessing the effects of forest therapy on depressive symptoms in adults aged 18 years and older; (2) studies including at least one control group or condition; (3) peer-reviewed studies; and (4) been published either in English or Korean before July 2016. The Scottish Intercollegiate Guideline Network measurement tool was used to assess the risk of bias in each trial. In the final sample, 28 articles (English: 13, Korean: 15) were included in the systematic review. We concluded that forest therapy is an emerging and effective intervention for decreasing adults’ depression levels. However, the included studies lacked methodological rigor. Future studies assessing the long-term effect of forest therapy on depression using rigorous study designs are needed.

Suggested Citation

  • Insook Lee & Heeseung Choi & Kyung-Sook Bang & Sungjae Kim & MinKyung Song & Buhyun Lee, 2017. "Effects of Forest Therapy on Depressive Symptoms among Adults: A Systematic Review," IJERPH, MDPI, vol. 14(3), pages 1-18, March.
    • Handle: RePEc:gam:jijerp:v:14:y:2017:i:3:p:321-:d:93590
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    References listed on IDEAS

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    1. Charness, Gary & Gneezy, Uri & Kuhn, Michael A., 2012. "Experimental methods: Between-subject and within-subject design," Journal of Economic Behavior & Organization, Elsevier, vol. 81(1), pages 1-8.
    2. Masahiro Horiuchi & Junko Endo & Norimasa Takayama & Kazutaka Murase & Norio Nishiyama & Haruo Saito & Akio Fujiwara, 2014. "Impact of Viewing vs . Not Viewing a Real Forest on Physiological and Psychological Responses in the Same Setting," IJERPH, MDPI, vol. 11(10), pages 1-19, October.
    3. Norimasa Takayama & Kalevi Korpela & Juyoung Lee & Takeshi Morikawa & Yuko Tsunetsugu & Bum-Jin Park & Qing Li & Liisa Tyrväinen & Yoshifumi Miyazaki & Takahide Kagawa, 2014. "Emotional, Restorative and Vitalizing Effects of Forest and Urban Environments at Four Sites in Japan," IJERPH, MDPI, vol. 11(7), pages 1-24, July.
    4. Jin-Woo Han & Han Choi & Yo-Han Jeon & Chong-Hyeon Yoon & Jong-Min Woo & Won Kim, 2016. "The Effects of Forest Therapy on Coping with Chronic Widespread Pain: Physiological and Psychological Differences between Participants in a Forest Therapy Program and a Control Group," IJERPH, MDPI, vol. 13(3), pages 1-13, February.
    5. Chorong Song & Harumi Ikei & Maiko Kobayashi & Takashi Miura & Masao Taue & Takahide Kagawa & Qing Li & Shigeyoshi Kumeda & Michiko Imai & Yoshifumi Miyazaki, 2015. "Effect of Forest Walking on Autonomic Nervous System Activity in Middle-Aged Hypertensive Individuals: A Pilot Study," IJERPH, MDPI, vol. 12(3), pages 1-13, March.
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