目的：踝關節動態背屈關節鬆動術(Ankle Dorsiflexion Mobilization with Movements)，是一種臨床上常用徒手治療方法，用來增加關節活動度、減輕疼痛和改善功能等目的。過去研究顯示該治療方法，對急性踝關節扭傷者，具有初期改善功能和減輕疼痛的效果。然而，過去沒有文獻探討踝關節動態關節鬆動術，對於健康受測者步態的影響，提供此治療技術療效更深入成效的探討。方法：60位健康大學學生（男性20人、女性40人，平均年齡21歲，BMI值21.2），連續三天參與本研究的資料收集。受測者第一天必須接受踝關節動態關節鬆動術治療介入，在介入前和後立即接受評估。評估方法是利用具有壓力感測單元的步道，收集受測者在平地步行時的時間和空間步態參數。此外，評估也包括使用踝關節劍步測試(ankle dorsiflexion lunge test)，測量受測者踝關節在載重下背屈的程度。踝關節動態關節鬆動術介入後第二天和第三天，受測者再次接受上述兩項評估。結果：踝關節背屈劍步測試結果顯示慣用側踝關節足背屈程度，在介入後立即、第二天和第三天都有改善，並具有統計上明顯差異(p<0.0001)。慢速步頻步行時，兩側下肢的步長、步幅及步寬，於介入後立即、第二天及第三天和介入前比較，呈現統計上明顯差異(p<0.004)。自選步頻步行時，兩側下肢的步態週期時間及步伐時間，於介入後第二天及第三天和介入前比較，也呈現統計上明顯差異(p<0.004)。結論：本研究顯示踝關節動態關節鬆動術，對關節活動度及平地步行時的時間和空間表現，具有立即和持續的效應；顯示該治療技術方式，可能會影響到健康受測者在功能性活動時的動作策略。

Background and purpose: Clinically, ankle dorsiflexion mobilization with movements (MWM) is a manual therapy technique widely used to increase joint range of motion, reduce pain, and improve functions. It has been reported in a single case study to have initial effects of improved functional outcomes and pain relief on acute ankle sprains. However, no study has examined the immediate effects of this technique on gait patterns in the ankle joint of healthy individuals. Methods: A total of 60 healthy collegiate students (40 females and 20 males, age 21±1.8 years; BMI 21.02±2.4) participated in three consecutive days. Spatial and temporal parameters of gait during level walking using a pressure sensor walkway and weight-bearing ankle dorsiflexion range using ankle lunge test were analyzed before and immediately after a single session of ankle dorsiflexion MWM intervention. Tests were repeated at day two and three after the intervention. Results: Significant improvements of ankle dorsiflexion range of motion on the dominant side were found between pre-and post-intervention (p<0.0001), at day two (p<0.0001) and at day three (p<0.0001). Significant changes in spatial (step length, stride length, and base of support) during slow walking and in temporal (gait cycle time and step time) variables on both sides were also observed during self-paced walking at day two (p<0.004) and day three (p<0.004) compared with pre-intervention. Conclusion: The results suggest that immediate and sustained spatio-temporal effects occur following ankle MWM. Changes during level walking indicate possible effects of alterations in motor strategies during functional tasks following ankle MWM.