本研究的目的是為測試「健康相關的飲食與運動行為自我效能量表」之信度與效度，研究對象分為三部份，第一部份以某專科學生有職業的家長為對象，完成125份問卷;第二部份則以都市之上班族群為對象，完成1147份問卷;第三部份是某大學護理學系最高年級學生為對象，完成332份問卷，經由研究資料的分析顯示本量表的信度在不同研究對象的Cronbach'sα為.93－.95，其內在一致性佳，其二週再測信度相關係數為.6745( p < .001 )。效度方面，健康相關的飲食與運動行為自我效能量表經主成分分析，可以建構成四個因素，分別為「減少熱量的作法」、「健康飲食行為技巧」、「運動習慣的堅持」、「減少脂肪與鹽份的堅持」，能解釋變異量的57.98%;健康相關的飲食與運動行為自我效能量表與「一般性自我效能」、「維持健康生活態度」、「健康生活型態」、「自覺健康狀況」皆呈顯著正相關，顯示本量表具有良好的建構效度與效標關聯效度。未來可作為研究及實務上應用的測量工具。

The purpose of this study was to test the reliability and validity of a self-efficacy seale for health-related diet and exercise behaviors. There were three groups of subjects. (1)A sample of 125 working parents of junior college students. (2)A sample of 1147 participants working in urban areas. (3)A sample of 325 senior nursing students in a university. The results revealed that this scale had good internal consistency (Cronbach'sα=.93 - .95) and test-retest reliability (r = .6745, P < .001) in different samples. The health-related diet and exercise behaviors scale could be divided into four aspects after principle component analysis. These factors were reducing calorie intake, healthy eating behavior skills, resisting relapse exercise behavior and resisting relapse of reducing fat and salt intake. The explained percentage of factor variance is 57.98%. The health-related diet and exercise behaviors scale is positively related to general self-efficacy, the attitudeof healthy life, healthy life style and self-rated health status. The resuIts revealed good construct validity and criterion-related validity. This scale can be utilized as a measurement tool in further study and practice.