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Evid Based Complement Alternat Med. 2016;2016:2587381. doi: 10.1155/2016/2587381. Epub 2016 Jul 14.

Effects of Forest Bathing on Cardiovascular and Metabolic Parameters in Middle-Aged Males.

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Department of Hygiene and Public Health, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan.
Nagano Prefectural Kiso Hospital, 6613-4 Fukushima, Kiso-cho, Kiso-gun, Nagano 397-8555, Japan.
Forest Baubiologie Studio Inc., 3-40-10 Kinugaoka, Hachiouji-shi, Tokyo 192-0912, Japan.
Agematsu Town Office Industry & Tourism Department, 2-13 Ekimae-dori, Agematsu Town, Kiso-gun, Nagano 399-5603, Japan.
Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba 305-8687, Japan.
Le Verseau Inc., 3-19-4 Miyasaka, Setagaya-ku, Tokyo 156-0051, Japan.
Clinical Audit Group, Regulatory Affairs Audit Department, Chugai Pharmaceutical Co., Ltd., 1-1 Nihonbashi-Muromachi 2-Chome, Chuo-ku, Tokyo 103-8324, Japan.


In the present study, we investigated the effects of a forest bathing on cardiovascular and metabolic parameters. Nineteen middle-aged male subjects were selected after they provided informed consent. These subjects took day trips to a forest park in Agematsu, Nagano Prefecture, and to an urban area of Nagano Prefecture as control in August 2015. On both trips, they walked 2.6 km for 80 min each in the morning and afternoon on Saturdays. Blood and urine were sampled before and after each trip. Cardiovascular and metabolic parameters were measured. Blood pressure and pulse rate were measured during the trips. The Japanese version of the profile of mood states (POMS) test was conducted before, during, and after the trips. Ambient temperature and humidity were monitored during the trips. The forest bathing program significantly reduced pulse rate and significantly increased the score for vigor and decreased the scores for depression, fatigue, anxiety, and confusion. Urinary adrenaline after forest bathing showed a tendency toward decrease. Urinary dopamine after forest bathing was significantly lower than that after urban area walking, suggesting the relaxing effect of the forest bathing. Serum adiponectin after the forest bathing was significantly greater than that after urban area walking.

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