背景　規律的身體活動雖然可促進醫事人員的健康、降低曠班及工作緊張感，但大部分醫事人員的活動量是不足的。目的 瞭解與比較護理人員、醫師及其他醫事人員之身體活動階段的差異。方法　本研究設計採橫斷式問卷調查法，以臺灣某醫院四院區之護理人員、醫師及其他醫事人員為研究對象。以身體活動階段問卷表為研究工具。資料統計分析方法包含：描述性統計分析、卡方百分比同質性考驗及事後比較、多項式邏輯斯迴歸分析。結果　本研究共發出問卷3,260份，有效回收問卷2,001份，有效問卷回收率為61.4%。本研究共收集1,497名（74.8%）護理人員、241名（12.0%）醫師及263名（13.1%）其他醫事人員。研究結果顯示，醫師與其他醫事人員的身體活動階段均以準備期居多；而護理人員身體活動階段則以無意圖期居多。以無意圖期為參考值，多項式邏輯斯迴歸分析醫事人員身體活動階段傾向之可能因素顯示，護理人員、男性、具碩博士學歷者，其身體活動階段處於意圖期的勝算較低（p ＜ .05）；護理人員處於準備期的勝算較低（p ＜ .01）。臺東院區、男性及未婚者處於維持期的勝算較高（p ＜ .01）。結論／實務應用　本研究結果可作為未來醫院領導者發展醫事人員個別化身體活動計畫方案之參考，以促進其健康。

Background: Despite the fact that regular physical activity is known to improve physical health and reduce absenteeism and perceived job strain, healthcare professionals currently perform inadequate physical activity. Purpose: To understand and compare the differences in stages of physical activity among nurses, physicians, and allied healthcare professionals. Methods: A cross-sectional questionnaire was used to survey nurses, physicians, and allied healthcare professionals who worked at four branches of a hospital in Taiwan. Data were collected using the physical activity stage of change questionnire. Data were analyzed using descriptive analysis, Chi-square test of homogeneity of proportions and a posteriori comaparisons, and multinominal logistic regression analysis. Results: Of the 3,260 questionnaires administrated, 2,001 valid questionnaires were returned for an effective response rate of 61.4%. In total, 1,497 (74.8%) of the nurses, 241 (12.0%) of the physicians, and 263 (13.1%) of the allied healthcare professionals completed the questionnaire. The results revealed that most of the physicans and allied healthcare professionals were in the preparation stage, while most of the nurses were in the precontemplation stage. Multinominal logistic regression analyses showed that, using the precontemplation stage as a reference value, the odds of being in the contemplation stage were lower among participants who were nurses or male or who had a master's or doctoral degree (p ＜ .05). Further, the odds of being in the preparation stage were lower among nurses (p ＜ .01). The odds of being in the maintenance stage were higher among participants that: lived in the Taitung area, were male, or were single (p ＜ .01). Conclusion / Implications for Practice: The findings provide valuable references for future hospital leaders to develop effective individual physical activity programs for healthcare profession.