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【論文摘要】慣性離心超負荷熱身與一般熱身對跆拳道選手下肢肌肉僵硬度及運動表現之影響
【論文摘要】Effects of inertial eccentric overload warm-up and general warm-up on lower limb muscle stiffness and sports performance of Taekwondo athletes
摘要
目的：相較於傳統熱身，慣性飛輪離心超負荷運動模式，能誘發更大肌肉動作電位及徵召更多快縮肌纖維。因此，本研究探討慣性離心超負荷熱身與一般專項熱身對下肢肌肉僵硬度及運動表現之影響。方法：招募大專15位跆拳道男生選手，年齡20.3±0.8歲、身高179±5.6公分、體重68.8±8.2公斤。以平衡次序進行一般專項熱身（10分鐘跆拳道熱身，熱身後靜坐休息5分鐘）及飛輪慣性離心超負荷（以弓箭步進行熱身，共二組，每組反覆三下，組間休息1分鐘）熱身。每種熱身前、後進行肌肉僵硬度5-10-5敏捷跑與連續7次垂直跳測驗。數據則以前、後測變化程度百分比，進行t-test統計分析，顯著水準p<.05。結果：肌肉僵硬度方面:股四頭肌左腳一般熱身〔（-5.82±8.02%）顯著低於慣性飛輪（4.98±11.39%）（t=-3.7，p<.05）〕。右腳一般熱身〔（-7.27±11.99%）顯著低於慣性飛輪（4.25±5.88%）（t=-3.3，p<.05）。而腿後腱肌及腓腸肌僵硬度、5-10-5衝刺跑與連續7次垂直跳，兩組之間皆無顯著差異（p>.05）。結論：相較於一般熱身，本研究慣性飛輪離心超負荷熱身顯著提升股四頭肌僵硬度，但對運動表現無差異，推測可能能增加下肢膝關節穩定性及預防損傷效益，此議題未來仍須持續探討。
並列摘要
Introduction: Compared with the traditional warm-up, the inertia flywheel eccentric overload exercise mode can induce greater muscle activation and recruit more fast-twitch muscle fibers. Therefore, this study explores the effects of inertial eccentric overload warm-up and general specific warm-up on lower limb muscle stiffness and sports performance. Methods: Fifteen male taekwondo athletes, (age 20.3 ± 0.8 years, height 179 ± 5.6 cm, and weight 68.8 ± 8.2 kg) were divided into the general specialized warm-up and flywheel inertia overload in a counterbalanced design. Before and after warm-up the muscle stiffness 5-10-5 runs and 7 consecutive vertical jump were measured. Results: The quadriceps muscle stiffness: the general warm-up of the left foot [ (-5.82 ± 8.02%) was significantly lower than the inertial flywheel (4.98 ± 11.39%) (t = -3.7, p < .05)]. The general warm-up of the right foot [ (-7.27 ± 11.99 %) was significantly lower than the inertial flywheel (4.25 ± 5.88%) (t=-3.3, p < .05) ]. The hamstring and gastrocnemius stiffness, 5-10-5 agility and 7 consecutive vertical jumps were no significantly different between the two conditions (p > .05). Conclusions: Compared with the general warm-up, the inertial flywheel eccentric overload warm-up in this study significantly improves the quadriceps femoris stiffness, but no effect on sport performances. It may enhanced knee ability and reduce the risk of injury in the lower extremities.