目標：探討工作場所的身體活動促進計劃對提升員工運動階段及自我效能的成效。方法：本研究為衛福部國民健康署委託辦理，共選取四家職場，以抽籤隨機決定實驗與控制組。實驗組參考世界衛生組織健康職場模式進行介入16週。在介入前後進行兩組運動階段和運動自我效能的評估。資料以SPSS統計軟體進行獨立t檢定、卡方檢定、Mann-Whitney檢定及變異數分析(ANOVA)。結果：職場員工完成前後測者共331人。實驗組(176人)介入後運動階段有顯著提升(p=0.001)，實驗組在意圖期者經介入後有29.0%進步到準備期，11.1%進步到行動期；在準備期者經介入後有22.6%進步到行動期、72.2%進步到持續期。實驗組的後測運動自我效能平均高於對照組1.6分。經介入後實驗組之運動階段和自我效能之提升都比對照組顯著為高。結論：本研究發現此健康促進介入模式可導入職場中，加強員工運動行為與自我效能。

Objectives: This study is entrusted by Health Promotion Administration, Ministry of Health and Welfare, and the aim is to evaluate the effects of workplace physical activity promotion model on health-exercise behavior and self efficacy of employees. Methods: Employees from four workplaces were included and randomized into experimental and control group. The intervention programs were conducted according to the recommendation of the WHO Healthy Workplace Model report. Pre- and post-evaluation was performed before and after 16-week intervention. A simple evaluation on stages of exercise behavior and self-efficacy was done. Statistics were performed by independent t-test, Mann-Whitney test, X2 test and ANOVA accordingly. Results: A total of 331 participants completed the pre- and post-evaluation. The stage of exercise in experimental group (176) after the intervention phase was significantly improved (p=0.001) and after intervention, the experimental group in the contemplation stage significantly progress to preparation stage(29%), or action stage (11.1%); while in the preparation stage progress to action stage (22.6%) and maintenance stage (72.2%). Post-test average exercise self-efficacy in the experimental group is score 1.6 higher than the control group. The promotion of exercise stage and self-efficacy between the intervention in the experimental group are significantly elevated than the control group. Conclusions: This study suggests this WHO intervention model can be imported in the workplace and significantly enhanced exercise behavior and self-efficacy of employees.