title: Elucidation of a physiological adjustment effect in a forest environment: a pilot study.
abstract: There is a significant positive relationship between exposure to forest environments and physical and mental health. However, there are individual differences within these responses, and this phenomenon has posed questions in various fields. Here, we show that the physiological effect of a forest environment can differ depending on a subject's initial values and that forests have a physiological adjustment effect close to an appropriate level. Subjects with high initial blood pressure and pulse rate showed a decrease in these values after walking in a forested area, whereas those with low initial values showed an increase. There was no physiological adjustment effect observed in an urban area; thus, these effects are specific to a forest environment.
authors.affiliation: Center for Environment, Health and Field Sciences, Chiba University, Kashiwa-no-ha 6-2-1, Kashiwa, Chiba 277-0882, Japan. crsong1028@gmail.com.
authors.forename: Chorong
authors.initials: C
authors.lastname: Song
authors.affiliation: Center for Environment, Health and Field Sciences, Chiba University, Kashiwa-no-ha 6-2-1, Kashiwa, Chiba 277-0882, Japan. ikei0224@ffpri.affrc.go.jp.
authors.forename: Harumi
authors.initials: H
authors.lastname: Ikei
authors.affiliation: Center for Environment, Health and Field Sciences, Chiba University, Kashiwa-no-ha 6-2-1, Kashiwa, Chiba 277-0882, Japan. ymiyazaki@faculty.chiba-u.jp.
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Miyazaki
mesh_terms: D000328:Adult; D001794:Blood Pressure; D002947:Cities; D065928:Forests; D006339:Heart Rate; D006801:Humans; D008297:Male; D008603:Mental Health; D010865:Pilot Projects; D016138:Walking / Q000502:physiology*; D055815:Young Adult