摘　　要
　　本研究探討十位已接受藥物治療的憂鬱症病患，分成實驗及對照兩組（每組各五名），實驗組從事60～80%HRmax運動強度之步行運動一個月後，比較兩組憂鬱程度改善的程度，藉以了解運動對憂鬱症改善的情形；此外亦探討憂鬱程度改變的可能相關因素，如運動習慣、步行速度、運動強度、及運動次數等相關因子。
　　運動前與一個月後，兩組受測者同時以貝氏憂鬱量表（Beck depression Inventory；BDI）和漢米爾頓憂鬱量表（Hamilton depression rating scale；HDRS）來評量憂鬱改善程度，並運用聽覺刺激大腦之事象關聯電位的N100、P200、P300潛值（latency；LA）和P300相對振幅（related　amplitude；RA）的變化來了解運動前後其與憂鬱程度改善的關係。
　　結果實驗組比對照組之憂鬱改善程度較為明顯（兩量表均為P＜.05），表示運動介入一個月後對已接受藥物治療的憂鬱症患者而言，其憂鬱程度於服用藥物治療後仍有改善的空間。另外在探討憂鬱程度改善的相關因素中，發現只有運動次數達顯著相關（p＝.01；.04）。
　　在實驗組接受聽覺刺激大腦之事象關聯電位方面，結果顯示關聯電位與憂鬱改善程度沒有顯著相關（p＞.05），表示對已接受藥物治療的憂鬱症患者而言，僅一個月的運動期限，實驗組之事象關聯電位尚無法佐證其憂鬱程度改善的情形。
關鍵詞：憂鬱症（depression）、步行運動（walking exercise）、事象關聯電位（event related potential）

Abstract
Ten depressed patients participated in this study. Five were assigned to a exercise treatment condition which takes a 60～80% Heart-rate-maximum exercise intensity for one month, the others were participated in a non-exercise condition . Depression degrees of subjects were assessed before and after one-month exercise-treatment period in order to be compared with the effect on depression. Besides this, the study was also to probe into some factors which could improve the level of depression degree, such as exercise hobby, walking speed, exercise intensity, and exercise times.
Depression degree, between exercise-treatment condition and non-exercise condition before and after one month, was assessed with Beck Depression Inventory (BDI) and Hamilton Depression Rating Scale (HDRS). And it was compared the vibrations of N100, P200, P300 latency (LA) and P300 related-amplitude (RA) from Event-related-potential (ERP) by auditory stimuli with the improvement of depression degree.
The results indicated that subjects in the walking exercise condition evidenced reliably greater improvements on depression degree than the non-exercise condition (both rating scales, p < .05) , this result divided that there is still a space to improve depression degree on medicated patients. On the other hand, among the related factors of decreased depression, there was only exercise-times concerned with the improvement of depression. ( both scales , p= .01;.04 )
On the exercise-treatment condition, there was no available confidence to provide the mean relationship between ERP and depression improvement (p > .05). This means that ERP is not sensitive enough to witness the improvement on depression for medicated patients.
Keywords: depression, walking exercise, event-related-potential

一、 中文部分
阮偉（民83）o抑鬱症醫護錦囊o香港；珠海文化事業有限公司。
林清山（民85）o心理與教育統計學o台北：台灣東華書局。
陳月霞翻譯（民88）o超越百憂解──克服憂鬱的神奇療法o台北：創意力文化事業有限公司。
蔡順隆，邱浩彰（民73）o誘發電位之介紹及目前之應用。　
　　　當代醫學，11（4），276-280 頁。
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