- 學位論文
正常步態與垂足步態對應於上肢運動學之研究
Kinematic Study of Upper Limb through Normal Gait and Drop Foot
摘要
本研究藉由分析正常人與垂足患者，於兩種步速行走時，三大解剖面之上肢各點擺動位移、速度、加速度、角度、角速度、角加速度變化，六種運動學參數與相對之步態關係，其目的為探討步態週期各階段輸入與輸出之參數，並冀望本研究有助於未來發展一套功能性電刺激控制策略，以上肢擺動做為回饋控制垂足患者步態之訊號，俾進一步作為未來垂足回饋控制之策略，改善偏癱患者之行走步態。 實驗中利用Visualeyez™ System，分析正常人及偏癱垂足患者行走時之上肢擺動動作，並將步態週期分為九個時期，以上肢擺動之運動學參數視為輸入參數，正常人與患者之踝關節角度差作為輸出參數，找出輸入與輸出參數極值點之對應關係。受測者為五位正常男性及三位偏癱患者，以舒適步行速度與最大步行速度行進，並同時以VZ4000攝影機記錄其步態與上肢擺動之運動學參數，再用MATLAB進行分析。實驗結果顯示，於特定之運動學參數，正常人與患者同時具有規律性和週期性，且步速雖會影響其參數振幅，但極值點與零值點發生時間相差7%以內。
並列摘要
Drop foot often happens during hemiplegics walk because the muscle groups are too weak to contract. Throughout analyzing the kinematic parameters on three anatomical planes with two walking speeds, this thesis aims at exploring the relationship between the upper and the lower limb in terms of displacement, velocity, acceleration, angle, angular velocity, and angular acceleration. The extreme-valued points chosen from the above mentioned kinematic parameters could be used as inputs and outputs. Inputs and outputs are assessed in different stages of one gait cycle. The result can be used for future FES feedback control by receiving signals from the upper limb and stimulating the drop foot. The Kinematic data of the upper and lower limb are collected by Visualeyez™ System during one gait cycle divided into nine stages. The kinematic parameters of the upper limb are used as inputs, and the angular variation in ankles of the normal and the paraplegic is regarded as the output. Subjects are five normals and three hemiplegics who move with normal and the fastest walking speeds. Kinematic parameters recorded by data VZ4000 cameras are analyzed with MATLAB software. The results show that extreme-valued points and zero-valued points appear regularly and shift about 7% for different subjects.