疲倦感及身體活動功能降低為冠狀動脈疾病(CAD)病患常見的反應。這些因素會影響病患工作、家庭及社交生活，因而評估病患疲倦程度及身體功能是非常重要的。本研究之目的為:(1)評估CAD病患的疲倦感受度; (2)探討疲倦感受度，運動耐力及日常活動量之相關性;及(3)評估心臟復健實施前後，病患在疲倦感受度、運動耐力及日常活動量上的改變。研究對象為43位 接受為期12週心臟復健工作之CAD患者，於復健前、復健第8週和第12週時填寫以下四個問卷量表:疲倦/活力量表、Duke活動狀況指標、情緒狀態剖析表及Beck憂鬱測量表。運動耐力乃根據個案運動試驗結果來評估。研究之結果顯示個案呈現輕度到中度的疲倦感。疲倦度於復健實施從顯著降低，而運動耐力及日常活動量均顯著增加。疲倦感受度之主要相關因素為日常活動量及憂鬱程度，因此個案之疲倦程度可能來自於疾病對其生理及心理兩方面之影響。本研究之結果可做為評估心臟復健工作之依據，進而提昇心臟病患之護理照顧品質。

Feelings of fatigue and decreased physical capacity are common responses in coronary artery disease (CAD) patients. The purpose of this study was to (1) evaluate fatigue perceived by CAD patients, (2) explore the relationships among perception of fatigue, exercise capacity, and daily activity performance, and (3) determine changes in fatigue and physical capacity following rehabilitation. The subjects included 43 patients who participated in a rehabilitation program. Four questionnaires were completed by each subject prior to, at the eighth week, and at the completion of the rehabilitation program: Fatigue/Stamina Scale, the Profile of Mood Status, the Duke Activity Status Index, and the Beck Depression Inventory. The results indicated that patients reported mild to moderate degrees of fatigue. The fatigue scores decreased while exercise capacity and daily activity performance improved throughout the rehabilitation program. Significant prediction variables for fatigue were daily activity levels and depression scores. Results of this study may help nurses to improve nursing care of cardiac patients.