兩種不同牽張幅度深跳練習的二階段肌電現象之比較

The comparisons of EMG Patterns Between Two Drops Jump With Different Stretch Amplitude

10.6222/pej.0028.200003.4032

林政東(Jenq-Dong Lin)；陳全壽(Chuan-Show Chen)；劉宇(Yu Liu)；趙峻郁(Chun-Yu Chao)

牽張－縮短循環 ； 牽張反射 ； 彈性能 ； 牽張幅度 ； 肌電振幅 ； Stretch-Shortenig-Cycle ； stretch reflex ； elasticity energy

體育學報

28期（2000 / 03 / 01）

329 - 338

繁體中文

本研究是利用運動生物力學的方法，探討肌肉牽張縮短循環（stretch-shortening-cycle SSC）的典型動作drop jump (DJ) 20、40和60cm之肌肉工作特徵，以便了解淺蹲和深蹲法的DJ跳法之離心和向心收縮二階段的肌電活動特徵。本次實驗以AMTI測力板、電子關節角度計及Biovision肌電系統測量受試者在兩種不同牽張幅度下的地面反作用力、膝關節角度的變化、比目魚肌和股直肌的肌電活動特徵。受試者11名，平均年齡為23.18 ± 2.64歲，身高為173.0 ± 4.03公分，體重為64.31 ± 5.97公斤。經由實驗處理與討論，獲得以下結果。 一、 兩種跳法的比較下，淺蹲跳法在離心階段產生較大的肌電振幅，而產生的較大肌電振幅應是牽張反射所造成，同時較大肌電振幅表示單位時間內徵召較多的運動單位參與工作，如此說明了淺蹲跳法可以產生較大的肌肉神經刺激，所以爆發力訓練時，宜採用淺蹲跳法。 二、 本實驗兩種跳法的向心階段平均肌電振幅無顯著差異，並且兩者極為接近，這說明二階段分法無法分別區分SSC的彈性能效應和牽張反射對向心肌電振幅之影響。

The experiment used methods of sport biomechanics to investigate the electromyographic magnitude of eccentric and concentric phases under two different stretch amplitudes of drop jumps in order to understand neuromusculor characteristics of different stretch amplitudes of SSC movement. There were 11 subjects in this experiment including jumpers and sprinter. Their ages are 23.18 ± 2.64, heights are 173.0 ± 4.03 and weights are 64.31 ± 5.97. AMIT forceplatform, goniometer and electromyography (EMG) Biovision system were used to record the ground reaction force, knee joint angle and the EMG-signals of soleus and rectus femoris. After the treatment of the data, we have gained the results as follows: 1. After the comparison of the two methods of jump, small stretch amplitude DJ produce larger electromyographic magnitude during eccentric phase (P＜.05), which are related mostly to stretch reflex. On the other hand, small stretch amplitude jump can induce larger excitation of innervation. Therefore, it is recommended to adopt the method of short stretch DJ to have a better training effect on the SSC mechanism. 2. There are no difference on the electromyographic magnitude between small stretch and large stretch DJ during concentric phase, and their electromyographic magnitude are very similar. This demonstrates that the two phases can’t be used to distinguish the effect of elasticity energy and stretch reflex during concentric phase.

1. Allum, J.H.J.,Mauritz, K.H.,Vogele, H.(1984).Compensation for intrinsic muscle stiffness by short-latency reflexes in human triceps surae muscles.Journal of Neurophysiology,52(5)
2. Bosco, C.,Komi, P.V.,Ito, A.(1981).Prestretch potentiation of human skeletal muscle during ballistic movement.Acta. Physiol. Scand,111
3. Cavagna, G.A.,Citterio, G.,Jacini, P.(1981).Effect of speed and extent of stretching on the elastic properties of active frog muscle.Journal of Experimental Biology,91
4. Diener, H.C.,Dictlgans, J.B.,Bacher, M.(1984).Early stabilization of human posture after a sudden disturbance; influence of rate and amplitude of displacement.Exp. Brain res,56
5. Dietz, V.,Schmidtbleicher, D.,North, J.(1979).Neuronal Mechanisms of Human Locomotion.Journal of Neurophysiology,42(5)
6. Gregory, J.E.,Morgan, D.L.,Proske, U.(1987).Changes in size of the stretch reflex of Cat and man attributed to aftereffects in muscle spindles.Journal of Neurophysiology,58
7. Herzog, W.,Guimaraes, A.C.S.,Zhang, Y.T.(1994).In B.M. Nigg and W. Herzog eds.). Biomechanics of the musculo-skeletal system.
8. Houk, J.C.,Rymer, W. Z.(1981).In V.B. Brooks, (Ed.). Handbook of physiology: Sec. I. The nervous system: Vol. II..
9. Komi, P. V.(1984).In Terjung, R.L. (Ed.) Exercose and Sport Sciences Reviews.
10. Lin, J.P.,Brown, J.K.,Walsh, E G.(1997).Soleus muscle length, stretch reflex excitability and the contratile properties of muscle in children and adults study of the functional joint angle.Developmental Medicine & Child Neurology,39
11. Matthews, P.B.C.,Stein, R.B.(1969).The regularity of primary and secondary muscle spindle afferent discharge.Journal of Physiology,202
12. Nichols, T.R.,Houk, J.C.(1976).Improvement in linearity and regulation of stiffness that results from actions of stretch reflex.J. of Neurophysiology,39
13. Poppele, R.E.(1981).An analysis of muscle spindle behavior using randomly applied stretches.Neuroscience,6
14. Rack, P.M.H.,Westbury, D.R.(1974).The short range stiffness of active mammalian muscle and its effect on mechanical properties.Journal of Physiology,240
15. Sherrington, C.S.(1909).On plastic tonus and proprioceptive reflexs.Quarterly Journal of Experimental physiology,2
16. Stein, R.B.,Keamey, R.E.(1995).Nonlinear behavior of muscle reflex at the Human ankle joint.Journal of Neurophysiology,73
17. 劉宇、江界山、陳重佑(1996)。肌力與肌力診斷的生物力學。臺灣師大體育研究，2

1. 陳孟利、高明峰(2007)。肌電測量之特性、運用與運動相關研究之探討。臺中學院體育，4，146-154。
2. 辜瀞儀,張瑞祥,張木山,王令儀(2010)。膝關節角度變化對於垂直蹲跳表現之影響。華人運動生物力學期刊，2，57-63。
3. 許年瑩、王思宜(2017)。不同躍起方向對高臺著地反彈跳躍動作下肢著地負荷之影響。體育學報，50(4)，427-438。
4. 劉強、郭京漢、莊榮仁、相子元、洋風、石又(2012)。不同頻率全身震動對下肢運動表現之立即性影響。華人運動生物力學期刊，6，7-14。
5. 王思宜,王令儀(2022)。跳躍動作中離心階段的生物力學特性對跳躍表現之影響。中華體育季刊，36(4)，413-421。
6. 吳靜儀、王令儀(2014)。跆拳道不同步法下壓踢動作技術分析。運動表現期刊，1(1)，10-14。
7. (2002)。不同牽張幅度深跳練習的神經肌肉活動之比較。臺灣體育學術研究，12(2)，273-284。