本前趨研究目的在發展乳癌術後病人”手臂運動促進量表”，並初步測試其信效度。量表的發展分為三階段，第一階段：量表的發展是基於30位病人訪談內容的分析及相關的參考文獻，並測試量表的表面效度、可讀性及可行性，第二階段：以28位乳癌手術後病人進行量表的預試及內容信度測試，第三階段：以大部份為乳癌手術後二年的85位病人，測試量表的內在結構及內容信度，以主軸因素分析量表的得分，經斜交轉軸測試建構效度，量表呈現三個因素，分別為手臂運動的 ”利益的感受”、”學習支持的感受”及”情境支持的感受”三個子量表，共可解釋 66.35%的變異量，並檢視此量表與手臂不適及運動阻力的相關性，結果發現促進量表得分與手臂不適及運動阻力皆呈負相關，皆具有統計學上的意義；進一步檢視該量表信度，總量表及三個子量表的內在一致性信度Cronbach’s α 值分別為.90、.90、.90、.83，顯示本量表具良好的效度及信度，且填答簡易，但在應用於臨床手臂運動促進之評估前，仍需多方測試，以檢視本量表的效度。

The purpose of the study was to develop and test an “Arm Exercise Promoting Scale- Breast Cancer（AEPS-BC）”among post-mastectomy breast cancer patients. This scale was developed in three phases. In phase I, an item scale was developed based on content analysis from interviews of 30 post-mastectomy breast cancer patients after mastectomy and related literature reviews. Face validity, content validity and feasibility were also evaluated. In phase II, a pilot study was initiated and internal consistency reliability was tested in 28 post-mastectomy breast cancer patients after mastectomy. In phase III, internal validity of the AEPS-BC by was assessed using principal axis factor analysis in 85 breast cancer patients who had undergone mastectomy, most more than 2 years previously. The principal axis factor analysis with promax rotation revealed that three factors — perception of benefit, support of learning and support of
situation — support the construct validity and explained 66.35% of total variance. The correlation between arm discomfort and exercise barriers supports the construct validity further. The overall scale and subscales with Cronbach’s alpha value of .90, .90, .90, and .83, respectively shown the reliable internal consistency. The preliminary test showed that the AEPS-BC is a reliable, valid and easily evaluated scale for measuring arm-exercise promoting among breast cancer patients after mastectomy. The scale was showed the reliability and validity in the pilot study, however, the scale should to be further validated through additional studies ,before assessing arm exercise promoting clinically.