無線微機電感測器應用於五人制足球定點腳背射門動作分析

WIRELESS MEMS SENSORS APPLIED TO ANALYSIS ON FUTSAL FIXED INSTEP SHOT

目的:在比較五人制足球十公尺定點腳背射門動作中，優秀與次優秀選手間的差異性，探討的有球速、足加速度、人體下肢段加速度運動學參數關係。方法: 受試對象以國中優秀與次優秀選手各一名，慣用腳皆為右腳。利用無線微機電感測器，內含三軸加速規。實驗時在受試者的右踝、右膝、左踝、左膝、右腰各配戴1個感測器，擷取優秀選手與次優秀選手在定點腳背射門時相關之運動參數。結果：1.優秀和次優秀選手在個人球速上配戴和未配戴感測器無顯著差異(顯定水準為0.05)；2.優秀與次優秀選手之間在球速上無論是否配帶感測器皆達顯著差異；3.優秀與次優秀選手在踢球時間上有顯著差異；4.優秀與次優秀選手在身體下肢段三軸加速度上，經檢定後右踝、右膝、左踝和左膝的合力均達顯著差異。結論：1.配戴感測器不會影響選手的射門球速表現；2.踢球的時間優秀選手大於次優秀選手；3.選手配戴感測器踢球時間之差異比較，達顯著差異，在優秀選手的最小值中，代表前後擺腿方向移動的X和Z軸，位移比次優秀手較大，使得踢球時間較長。4.下肢段三軸加速度的比較，五個肢段點的二十個比較值當中，十四個有明顯差異，顯示優秀選手與次優秀選手在十公尺射門時，動作是有明顯的不同。

Purpose: Compare futsal ten meters designated instep shot action， the difference between the elite and sub-elite athletes， explore ball speed， Kicker time with the ball velocity Relations， human lower limb segment acceleration kinematic parameters of the relationship. Method: The Subjects each an elite and sub-elite. The idiomatic feet are right foot. Using wireless Micro Electro Mechanical systems (MEMS) sensors includes tri-axial accelerometers. Experiment when the subject's right ankle， right knee， left ankle， left knee， The right side of the waist， each wearing a sensor to retrieve the motion parameters associated with the elite and the sub-elite at designated instep shot. Results: 1. The elite and sub-elite athletes in the individual ball velocity wear and not to wear sensors no significant differences (significant given the level of 0.05); 2. The elite and sub-elite on the ball velocity whether or not equipped with sensors are significant differences; 3. The elite and sub-elite to kick the ball at time is has significant difference in the time; 4. The elite and sub-elite athletes in the body the lower extremities paragraph tri-axial acceleration certificated after right ankle， right knee， left ankle and left knee joint force reached a significant difference. Conclusion:1. Wear sensors will not affect the players shot the ball speed performance; 2. Good players kick the ball time is greater than the sub-elite athletes; 3. Players to wear sensors Kicker time differences， the two between significant difference before and after， represents the minimum value of the elite athletes kick moved in the direction X and Z axes， the displacement is larger than the plays excellent hand， so that the kicker time longer. 4. Comparison of the lower limb segment tri-axial accelerometer， the five limb segment twenty comparison value which， fourteen significant difference， the elite and sub-elite athletes in the 10 meter instep shot action， action is obvious different.