前言:近年來運動鞋的開發與研究有跳躍式的成長，如何在運動鞋中加入創新的 設計，又能提升運動表現與感受，成為各大鞋廠追逐的目標，其中一種備受矚目的設 計特徵，是在鞋內中底加入碳纖維板來提升縱向彎曲勁度，而這種設計對運動表現和 傷害預防起著重要的作用，但是過去研究發現勁度的高低會影響個體的表現效益，且 尚不清楚造成鞋子性能改變的具體原因和潛在機制。目的:探討不同勁度的全長式碳 纖維板，在不同運動型態(走路、跑步、跳躍)與速度下的生物力學影響。方法:招 募 15 名健康成年男性受試者，隨機穿著四種條件的運動鞋(無板、0.6mm、0.8mm、 1.0mm)，並進行不同運動型態與速度的動作，再擷取受試者行進過程中的地面反作 用力 (Ground reaction forces, GRF)和足底壓力中心 (Center of pressure, COP)數值進行分析， 最後以重複量數二因子變異數與單因子變異數分析比較各條件之間的差異。結果:在 鞋底放置不同勁度的碳纖維板，會影響步行模式下的 COP 移動速度峰值，且隨著勁度 越高，順暢性越好，但隨著勁度的增加，水平力量峰值及推進衝量則越小，在跑步及 跳躍模式下，則沒有顯著的影響，勁度的高低也不會影響受試者的喜好選擇。結論: 不同的縱向彎曲勁度，可能會對一般人步行的運動學及動力學造成影響，且隨著勁度 增加推進階段的順暢性越好，但過高的勁度可能會導致水平力量峰值及推進衝量的降 低。因此建議根據運行模式與運動強度挑選合適的勁度，而在跑步及跳躍模式下，可 能皆無法藉由市面上的常見勁度獲得明顯效益。

In recent years, there has been a jump in the development and research of sports shoes, and how to add innovative technology to sports shoes to enhance sports performance and feeling has become the target of major shoe manufacturers. One of the high-profile design features is the addition of carbon fiber panels to the midsole of the shoe to increase the longitudinal bending stiffness. This design plays an important role in sports performance and injury prevention. However, past studies have found that the level of stiffness will affect the individual’s performance benefits, and the specific reasons and underlying mechanisms for the change in shoe performance are not yet clear. Objective: To investigate the biomechanical effects of different thicknesses of full-length carbon fiber plates on different exercise patterns (walking, running, jumping) and speed. Methods: Fifteen healthy adult male subjects were recruited and randomly wore four conditions of sports shoes (no plate, low stiffness, medium stiffness, and high stiffness) and carry out different movement patterns and speed movements The values of GRF and COP were collected during the subjects’ performance, and the differences between the conditions were compared by repeated measures of repeated measurement two-way ANOV A and one-way ANOV A. Results: Placement of carbon fiber plates of different vigor in the shoes will affect the peak COP velocity in walking, and with higher stiffness, the smoothness will be better, but with increasing stiffness, the peak horizontal force and the propulsive impulse will be smaller, in running and jumping , there is no significant effect, and the level of stiffness will not affect the participant 's preference. Conclusion: Different longitudinal bending stiffness may affect the kinematics and kinetics of walking in general, and the smoother the toe-off phase as the stiffness increases, but too high a stiffness may lead to a decrease in peak horizontal force and propulsive impulse. Therefore, it is recommended to select the appropriate level of stiffness according to the mode of operation and exercise intensity, while in running and jumping, it may not be possible to obtain significant benefits with the common stiffnesses available on the market.

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