全身性的協調並快速觸及目標，為相當具備一般性與功能性的動作，更是競技
運動中必備的技能。要有效率地完成此動作，上肢與下肢必須以某種特定的策略互相協調動作。前人所探討的觸及動作皆侷限於上肢，且少有考慮如何以最短時間完成。本研究之目的即為，探討快速觸及目標物的動作中全身上下肢的協調，及動作產生時序之生物力學特性。本研究共有十位受試者，並將其分為兩組：一般組（一號至五號受試者）及擊劍組（六號至十號受試者），每位受試者須完成三種不同的觸及目標動作：執行全身觸及目標動作後，結束動作並維持穩定（S）、結束動作不需維持穩定（US）以及動作過程中非慣用手限制於體側並結束動作後維持穩定（AC）。使用一組動作捕捉系統（兩台VisualEyez, VZ4000）紀錄人體在三維空間的動作，兩塊測力板則用來測量雙腳的地面反作用力。結果指出全身觸及目標物動作中，一般情況下，會先由上肢或下肢各自的關節點連結成單一協調單位，而各單一協調單位再連結成一個全身的協調系統，以有效率地完成動作，且當任務需求增加時，會根據不同情況調整動作策略，各關節以多功能的方式參與動作；而經過擊劍運動訓練的選手在執行全身性觸及動作時，仍以各肢段有獨立的協調策略執行動作，並且
保持動作效率及速度。顯示經過特殊訓練的選手在任務需求不同時，仍使用相同的動作策略，並且不會對動作效率產生干擾，因此推論特殊的運動訓練可以達到動作特別化的效果。

Whole-body fast reaching movements are common and functional motions, and represent a very important skill in competitive sports. To complete the task effectively, the upper and lower extremities must work together with a certain coordination pattern. Most studies in the past focused on the upper extremities, and did not consider completing the motion within minimal time. The aim of the present study was to investigate the coordination between the upper and lower extremities of whole-body fast reaching
movements. Five male university athletes (subject 1 to 5) and five fencing team members (subject 6 to 10) volunteered as subjects in this study. Each subject was asked to perform
three kinds of whole-body fast reaching movements: (1)complete the movement and end at a stable posture, (2) complete the movement without stabilizing the ending posture, (3) execute movement as in task (1) with the left arm constrained to be attached to the trunk. A motion capture system was used to record three-dimensional kinematic data and two force plates were used to measure the ground reaction forces. The results demonstrated that when performing whole-body fast reaching movements, in order to complete the movement efficiently, the joints belonging to the same group (e.g. upper or lower body)
linked together as a coordinative unit first, and then the upper and lower extremities worked together as one coordinative system. Moreover, when the task motion became
more complex, joints participated in the motion with multi functions according to different situations. However, contrary to the results in ordinary athletes, the fencers
executed the whole-body fast reaching movements by moving the upper and lower body independently. The fencers performed different tasks with the same strategy while
maintaining the same efficiency in completing the motions. It can be inferred that a special training program might cause specialization in performing a movement.

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