不同足部著地策略之運動學特徵研究

目的：探討不同足部著地策略之運動學特徵，其RFS與FFS關鍵運動學參數之差異性。方法：本研究隨機招募8位男性青少年為研究對象，以2台高速攝影機拍攝，同步擷取頻率為100Hz，每位受試者須於跑步機上執行2次測驗，第1次測驗必需使用RFS策略，第2次測驗必需使用FFS策略，並以每小時10公里、每分鐘160步頻進行，選其支撐階段進行運動學分析，其平均身高177.50±5.24公分、體重67.13±6.06公斤、年齡19.25±1.28歲。結果：著地期之踝關節角度RFS顯著小於FFS（z = -2.415, p = 0.016）；著地期之重心速度、重心角度、重心高度、髖關節角度、膝關節角度則未有顯著差異（p ＞ .05）；支撐期之踝關節角度RFS顯著小於FFS（z = -2.100, p = 0.036）；支撐期之重心速度、重心角度、重心高度、髖關節角度、膝關節角度則未有顯著差異（p ＞ .05）；離地期之踝關節角度RFS顯著小於FFS（z = -1.995, p = 0.046）；離地期之重心速度、重心角度、重心高度、髖關節角度、膝關節角度則未有顯著差異（p ＞ .05）。結論：RFS與FFS在技術模式各有優劣，應考量自身的身體素質與肌肉型態，若是脛前肌群較佳者，可選擇RFS技術模式，若是阿基里斯腱或腓腸肌群力量較佳者，可選擇FFS技術模式。不過最終目的是否會提升運動經濟性，未來仍然需要進一步的研究來證實。

關鍵字

跑步機；足部著地；跑步方式

並列摘要

Objective: To investigate the kinematic characteristics of different foot strike strategies and the differences in key kinematic parameters between RFS and FFS. Methods: In this study, 8 male adolescents were randomly recruited as the participants. They were filmed by 2 high-speed cameras with a synchronous capture frequency of 100 Hz. Each participant was required to perform 2 tests on the treadmill, and RFS must be used for the first test. Strategy, the second test must use the FFS strategy, and it is performed at 10 kilometers per hour and 160 steps per minute. The support stage is selected for kinematic analysis. The average height is 177.50 ± 5.24 cm, weight 67.13 ± 6.06 kg, age 19.25 ±1.28 years. Results: The RFS of the ankle joint angle during the initial contact phase was significantly smaller than the FFS (z = -2.415, p = 0.016); there was no significant difference in the center of gravity velocity, the center of gravity angle, the height of the center of gravity, the hip joint angle, and the knee joint angle during the initial contact phase (p ＞ .05); The RFS of the ankle joint angle during the mid-stance phase was significantly smaller than the FFS (z = -2.100, p = 0.036); the center of gravity velocity, the center of gravity angle, the height of the center of gravity, the hip joint angle, and the knee joint angle were not significantly different in the mid-stance phase (p ＞ .05); The ankle joint angle RFS in the propulsion phase was significantly smaller than the FFS (z = -1.995, p = 0.046); there was no significant difference in the center of gravity velocity, center of gravity angle, height of the center of gravity, hip joint angle, and knee joint angle during the propulsion phase (p ＞ .05). Conclusion: RFS and FFS have their own advantages and disadvantages in the technical mode. You should consider your own physical fitness and muscle type. If the tibialis anterior muscle group is better, you can choose the RFS technical mode. If the Achilles tendon or gastrocnemius muscle group has better strength for the best, you can choose the FFS technology mode. However, whether the ultimate goal will improve the economy of sports still needs further research to confirm in the future.

並列關鍵字

Treadmill ； foot strike ； mode of running

參考文獻

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De Almeida, M. O., Saragiotto, B. T., Yamato, T. P., & Lopes, A. D. (2015). Is the rearfoot pattern the most frequentl y foot strike pattern among recreational shod distance runners? Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine, 16(1), 29–33. Doi： 10.1016/j.ptsp.2014.02.005

Derrick, T. R. (2004). The effects of knee contact angle on impact forces and accelerations. Medicine and Science in Sports and Exercise, 36(5), 832 –837. Doi: 10.1249/01.MSS.0000126779.65353.CB

Hasegawa, H., Yamauchi, T., & Kraemer, W. J . (2007). Foot strike patterns of runners at the 15 -km point during an elite -level half marathon. Journal of strength and conditioning research, 21(3), 888–893. Doi: 10.1519/R-22096.1

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