放射線治療後癌症病人身體活動、自我效能與生活品質之中介關係探討

Mediating Role of Self-Efficacy in Effect of Physical Activity on Quality of Life in Patients with Cancer after Radiotherapy

10.6142/VGHN.34.3.239

蔡曉菁(Shiau-Jing Tsai)；黃采薇(Tsai-Wei Huang)

身體活動 ； 自我效能 ； 生活品質 ； 中介變項 ； physical activity ； self-efficacy ； quality of life ； mediation

榮總護理

34卷3期（2017 / 09 / 01）

239 - 247

繁體中文

身體不活動是全球死亡率的第四大危險因素，佔所有死亡人數的6%。本研究旨在瞭解放射線治療後癌症病人之身體活動、自我效能及生活品質的現況，並探討三者間之中介關係。採橫斷式、描述相關性研究設計，共收集150位完成放射線治療之癌症病人，以Godin休閒時間活動指數(Leisure score index of the godin leisure time exercise questionnaire)、歐洲癌症研究與治療組織生活品質核心問卷(EORTC QLQ-C30)及身體活動自我效能問卷(Physical activity self-efficacy scale)等。利用描述性統計、t-test、皮爾森積差相關、變異數及複迴歸分析進行。研究結果：(一)24%癌症病人之身體活動符合身體建議量；(二)癌症病人自我效能偏低，平均為2.33±1.37分；(三)整體健康生活品質為中等，平均為45.72±17.21分；(四)身體活動、自我效能、生活品質間三者互成正相關(r=0.336～0.549, p＜.001)，並發現自我效能為身體活動與生活品質之中介變項。本研究建議醫護人員需加強放射線治療癌症病人的自我效能，以促進身體活動，達到較佳的生活品質。

Physical inactivity is the fourth leading risk factor for mortality globally and causes 6% of all deaths worldwide. This study explored the relationships among physical activity, self-efficacy, and quality of life and tested whether self-efficacy mediates the effect of physical activity on quality of life in patients with cancer. A cross-sectional design was adopted, and 150 patients with cancer who had undergone radiotherapy were recruited. Instruments included the Godin Leisure-Time Exercise Questionnaire physical activity preference survey form, European Organization for Research and Treatment of Cancer QLQ-C30, and physical activity self-efficacy scale. Of the patients in this study, 24% matched the suggestion for physical activity. The self-efficacy score was low (mean= 2.33±1.37). The quality of life score was average (mean= 45.72±17.21). Physical activity was positively related to self-efficacy. Physical activity and self-efficacy were positively interrelated to quality of life in the patients (r=0.336-0.549, p＜ .001). Self-efficacy completely mediated the effects of physical activity on quality of life. These tests were conducted to explore how the phenomenon of self-efficacy affects quality of life in patients with cancer and to investigate the mediating role of self-efficacy in the effects of physical activity on quality of life. The current findings are of clinical importance and can serve as a reference for how to improve the effect of self-efficacy on physical activity among patients with cancer.

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