緒論：運動員常利用負重來增加訓練的強度。和負重背心、拖曳訓練比起來，負重鞋為一個更輕巧方便、能在進行專項技術動作訓練時搭配穿戴的負重訓練選項，但過去關於負重鞋對專項技術動作影響的研究相當少，因此本研究主要為探討羽球員穿著後負重鞋在向右前跨步擊球時，對其下肢運動學和地面反作用力之影響。方法：招募12名大專羽球校隊球員，使其隨機穿著不負重，與後負重50、100、150、200、250公克的羽球鞋，以羽球基本步法向右前墊步後跨步擊球，同步以動作分析系統和測力板擷取下肢運動學和地面反作用力訊號。以單因子重複量數變異數分析(one-way repeated measures ANOVA)比較在穿著不同負重鞋狀況下，撞擊力峰值、平均負荷率、著地瞬間膝關節角度、足速度、足底角、跨步距離是否有所差異，顯著水準設定為p <.05。結果：鞋子沒有負重，或負重在50~250公克，撞擊力峰值、平均負荷率、著地瞬間膝關節角度、足速度、足底角、跨步距離皆無顯著差異，此結果可能是因為加重的重量差距不大，因此整體上參與者會使用相似的著地策略應對並產生相似的地面反作用力。另外，因參與者的著地策略有個別差異，使得穿著不同的負重鞋跨步擊球時，其測得參數也未達顯著差異。結論：進行羽球基本步法訓練時，羽球鞋負重在250公克或鞋總重573公克以下，不會有因加重而增加地面撞擊力，導致運動傷害的疑慮。

Purpose: The purpose of this study is to investigate the effects of rear-weighted shoes on lower extremity kinematics and ground reaction forces when college badminton players perform right-forward lunge footwork. Methods: Twelve college badminton players were recruited for this study. Each individual was asked to wear non-weighted shoes and rear-weighted shoes with 50, 100, 150, 200 or 250 grams added in a randomized sequence and to perform right-forward lunge and stroke a shuttlecock. A motion capturing system and a force platform were synchronously utilized to record lower extremity kinematics and ground reaction force signals. One-way repeated measures ANOVA was used to identify any significant difference among the non-weighted and the five rear-weighted conditions. Results: There was no significant difference in impact force peak, mean loading rate, knee angle, foot velocity, sole angle and lunge distance among non-weighted shoes and rear-weighted shoes with 50, 100, 150, 200 or 250 grams added (p >.05). The insignificant results in kinematic variables could be because that the differences among the added mass were very small, participants used similar landing strategies and ended up producing similar ground reaction forces. It is also possible that the participants have used their own specific landing strategy to deal with different weight conditions. Conclusion: When performing basic footwork training in badminton, if the mass added to the rear part of the shoes is less than 250 grams or the total mass of each shoe is less than 573 grams, the badminton players will exhibit similar lower extremity kinematics and are not subject to larger ground reaction forces which can cause injury because of the additional weight.

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