研究目的：探討臨床護理人員身體活動型態與最近一個月規律運動情形，同時檢定中等強度及以上之身體活動的預測變項，亦調查其自覺促進活動職場支持程度。研究方法：本研究為橫斷性設計，以短版身體活動量表測量臨床護理人員最近一周內身體活動型態。研究對象來自南部地區的醫學中心及區域醫院共兩家，依其單位特性及人數，以目的性分層配額集束取樣，願參加研究對象有469位。採Ajzen所發展的計畫性行為理論，外加人口學特徵與工作特性等預測身體活動及其意圖之變項為何。以自覺職場環境支持量表了解護理人員感受身體活動促進被支持的程度。以階層邏輯迴歸檢定意圖及有關因素預測中等強度以上身體活動狀態，進一步以階層線性迴歸檢定計劃性行為理論各變項對身體活動意圖之預測。結果：最近一周有從事中等強度及以上之身體活動者47.3%，然意圖(OR=1.52, 95% CI=1.15-2.01)愈強及子女數愈多者(OR=1.34, 95% CI=1.07-1.67)，分別比意圖低者及較少子女數者，有較高的勝算比會去從事中等強度及以上之身體活動。知覺行為控制、態度及主觀規範等，對身體活動行為意圖之可解釋變異量達44.4%。護理人員最近一個月內能規律運動者僅5.9%；多數人提出「有動機，但懶得運動」。另多數人覺得工作職場對促進身體活動，以政策面及物理環境的支持度最低。結論及實務應用：本研究臨床護理人員從事中等強度以上身體活動及規律運動者比率偏低；建議促進身體活動意圖；輔以職場推動身體活動促進方案，考慮結合親子活動，以及考慮提高其身體活動自制力、正向態度與他人的規範等策略之設計，預期有效促進中等強度之身體活動行為。

Purpose: The aims of this study were to assess the patterns of physical activity and monthly regular exercise among hospital nurses, and to identify the related cognitive factors to predict their levels of moderate or vigorous physical activity. In addition, we also investigated whether the nurses perceived their work-site environment as being supportive to the promotion of physical activity. Method: A cross-sectional design was used in this study. Participants were recruited from the medical center hospital and regional hospital in southern Taiwan. Stratified sampling was used based on the work-site units’ characteristics, including the number of nurses in each unit, and included 469 female nurses. Physical activity (PA) in the past seven days was measured using the International Physical Activity Questionnaire (IPAQ). We adopted the theory of planned behavior (TPB), as developed by Ajzen, to frame the related factors to determine the PA levels of moderate and above. In addition, the Perceptions of the Workplace Environment Scale (PWES) was used to assess the nurses’ perceptions of how much support was given in the workplace environment to promote their PA. Hierarchical logistic regression was applied to examine the determinants of undertaking PA at the levels of moderate and above. Furthermore, hierarchical multiple regressions were used to analyze the predictors of intention to engage in physical activity, which included related factors, perceived behavioral control, attitude and subjective norm. Results: The results show that 47.3% of the participants had engaged in moderate or vigorous physical activity in the previous seven days. Higher levels of intention and having more children compared with having less intention and fewer children were associated with more PA. The odd’s ratios were 1.52 (95% CI=1.15-2.01) and 1.34 (95% CI=1.07-1.67), respectively. Moreover, perceived behavioral control, attitude and subjective norm were found to significantly predict the intention to engage in PA, with a variation of 44.4%. Only 5.9% of the respondents reported taking regular exercise in the past month, and the major reason given for irregular exercise was “laziness”. With regard to the Perceptions of the Workplace Environment, most of the nurses perceived that their work-site offered little support for PA at either the policy or organizational levels. Conclusion: The study found the rates of engagement in moderate or vigorous physical activity and regular exercise were low among hospital nurses. We suggest that the behavioral intention to undertake PA should be promoted first, and that work-site physical activity programs could combine parent-child activities. In particular, efforts should be focused on increasing nurses' perceived behavioral control, positive attitudes and subjective norm.

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