本研究從生理角度探討森林浴體驗纾解壓力之功效，纾解壓力效果評估採用唾液 澱粉酶。唾液澱粉酶是唾腺因神經受刺激所分泌的唾液主成分，面臨壓力時活性會提高是 代表壓力的生理指標之一。受試者於森林浴體驗行前與活動結束後量測唾液澱粉酶活性， 從生理指標比較體驗前後受試者壓力的改善效果。溪頭自然教育園區森林浴體驗為時兩小 時，由專業療癒指導員帶領於特定步道進行感官體驗活動進行視覺、聽覺、觸覺與嗅覺的 刺激。研究對象為2015年10月18日與11月18日（共兩梯次）參加溪頭森林療癒活動的參與 者，共30名受試者平均年齡為54.8歲，結果發現，唾液澱粉酶活性前測平均值為113.07 kIU/L，後測平均值為57.40 kIU/L，變動率-49.23 %，受試者壓力狀態在森林浴活動後有顯 著降低。

This study aimed to evaluate stress reduction effect of forest bathing trip from physiological perspective. Thirty subjects have experienced 2 hours forest bathing under guidance of forest therapy guides. In order to understand stress reduction level, salivary alpha-amylase (SAA) activity is measured before and after forest bathing experience. It has been suggested that SAA activity reflects a variety of stressful conditions. In other words, SAA activity represents an individual's stress level and can be a useful indicator to evaluate physiological stress. Additionally, salivary sampling is a non-invasive approach that is easy and stress free to subjects. Regarding to forest bathing trip, forest therapy guides at Xitou Nature Education Area (XNEA) led the subjects experiencing several sensory activities in two remote trails. A total of 30 participants from two groups in which there were 19 male subjects. The average age was 54.87 years old. The result showed that the average of SAA activity in pre-test was 113.07 kIU/L and 57.40 kIU/L in post-test. SAA activity decreased 49.23% and physiological stress was found significantly reduced after forest bathing experience. The results highlighted that forest bathing has great potential to reduce stress level of senior citizens that further contributes to health promotion to the specific generation.