Abstract
In this study, we investigated the psychological and physiological effects of horticultural activity, mainly involving herbs, among outpatients of a Kampo clinic using a general health questionnaire (GHQ), profile of mood state (POMS), salivary cortisol concentration and flicker test. Horticultural activity helped the outpatients lighten their symptoms of neurosis, and negative emotions, such as tension, anxiety, depression, fatigue and confusion. The salivary cortisol concentration after the activity were significantly decreased compared to that before the activity. This finding showed that the horticultural activity relieved stress in these outpatients. On comparison of open field activity (e.g. sowing seed, transplanting) with interior activity (e.g. making herb soap and scent bags), the open field activity in refreshing the outpatients' nervous fatigue was more effective than the interior activity. In conclusion, therapeutic effects of horticultural activity can be evaluated physiologically by the salivary cortisol concentration and the value of flicker test. Verification of the therapeutic effects of horticultural activity by the combination of psychological and physiological values can contribute to planning and prevalence of more effective activity programs.
