臺灣博碩士論文加值系統

研究目的：探討動靜態伸展對深垂直跳高度及離心期、偶聯期與向心期肌電活化之影響。研究方法：受試者為16位健康大專院校生(平均年齡：22.37±2.12歲)，分為靜態伸展、動態伸展與不伸展三組，並隨機抽籤決定三組先後順序。實驗前貼置表面肌電電極於右腳股內側肌、股直肌與股外側肌腹上並執行三次最大等長收縮作為肌電標準化，在介入伸展前、後各執行三次最大垂直跳(drop jump)，利用Zebris無線肌電儀(1000Hz)蒐集垂直跳之肌電訊號，並以Zebris 3D動作分析儀(100Hz)記錄垂直跳高度與膝關節角度變化，將其分為離心、偶聯與向心三期。以成對樣本t檢定比較三組內前、後測三期肌電活化之差異。結果：靜態伸展後垂直跳高度顯著下降3.1%(p< .05)，不伸展組下降3.7%(p< .05)，動態伸展組則無顯著差異；肌電活化方面，靜態伸展組在離心期：股直肌與股外側肌分別顯著下降了6.5%、8.9%(p< .05)，向心部分：股內側肌、股直肌與股外側肌肌電值分別顯著提升了14%、16%、26%(p< .05)；動態伸展組在離心期：股內側肌增加了12%(p< .05)，向心期：股直肌與股外側肌分別增加了21%及24%(p< .05)；不伸展組則只有在股內側肌之離心期下降8%(p< .05)。結論：靜態伸展後有較低的垂直跳高度與離心期肌電活化，動態伸展則可以在離心期促進肌梭之敏感性並引發牽張反射來徵召更多的運動單位來提升運動表現，因此，本研究建議爆發力運動以動態伸展作為暖身運動，將有助於比賽或訓練時之運動表現。

Purpose: This study was to investigate the effects of dynamic and stretching on vertical jump SSC electromyographic(EMG) activity of the quadriceps. Methods: Sixteen healthy men(age22.37±2.12) took part in 3 conditions(static stretching[SS], dynamic stretching[DS], and no stretching[NS]) on separate days. During each condition, EMG of m. vastus medialis(VM) and lateralis(VL), rectus femoris(RF) were measured with ZEBRIS EMG system(1000Hz). The angle of knee joint using ZEBRIS ultrasound based three-dimensional motion analysis(100Hz) were recorded with three separated phase including eccentric, coupling, and concentric phase. The EMG values were averaged for three trials and analyzed with paired t-tests for pre- and poststretching(α= .05). Results: The EMG activity of RF, and VL were decreased 6.5%, 8.9% respectively in the eccentric phase. The EMG activity of VM, RF, VL were increased 14%, 16%, 26% respectively in the concentric phase of SS group. The EMG activity of VM was increased 12% in the eccentric phase and the EMG activity of RF, VL were increased 21%, 24% respectively in the concentric phase of DS group. The EMG activity of VM was decreased 8% in the eccentric phase of NS group. Conclusion: The results reveals that after static stretching have lower EMG activity in the eccentric phase, but after dynamic stretching, the EMG activity was increased. This imply that dynamic stretching may raise muscle spindle sensitivity and stretch reflex response to recruit more motor unit to promote vertical jump performance. Therefore, the results suggests that the warm-up by dynamic stretching will facilitate sports performance.

第壹章　緒論 1
第一節　研究背景與動機 1
第二節　研究目的 3
第三節　研究假設 3
第四節　研究範圍與限制 4
第五節　操作性定義與名詞解釋 4
第貳章　文獻探討 6
第一節　牽張－縮短循環(SSC)之探討 6
第二節　動、靜態伸展之探討 12
第三節　動、靜態伸展對垂直跳肌電活化之探討 15
第四節　文獻總結 18
第参章　研究方法 19
第一節　研究對象 19
第二節　實驗地點與時間 19
第三節　實驗儀器與設備 19
第四節　實驗方法與步驟 23
第五節　資料處理與統計分析 29
第肆章 研究結果 31
第一節 受試者基本資料 31
第二節 動、靜態伸展之垂直跳高度 32
第三節 靜態伸展組之三期肌電活化 34
第四節 動態伸展組之三期肌電活化 36
第五節 不伸展組之三期肌電活化 38
第伍章 討論 40
第一節 不同分期方式觀測垂直跳肌電活化 40
第二節 動、靜態伸展對垂直跳表現之影響 41
第三節 動、靜伸展對垂直跳三期肌電活化之影響 43
第陸章 結論與建議 46
參考文獻 48
中文部份 48
英文部分 49
附錄 54
附錄一 54
附錄二 57

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