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【論文摘要】咖啡因口香糖對女壘打者運動表現之影響
【論文摘要】The Effects Of Caffeinated Chewing Gum On Hitting Performance Of Trained Female Softball Players
摘要
研究背景：咖啡因口香糖在過去研究被證實具有提升爆發力、無氧能力、專注力等促進運動表現之功能。本研究目的為探究咖啡因口香糖的介入，對於女壘球員打擊表現的影響。研究方法：14名（年齡20.6±1.3歲；身高160.0±4.9公分；體重59±6.1公斤）接受過專業訓練的女壘選手，以隨機交叉單盲的實驗設計，分成咖啡因口香糖組（caffeine gum，簡稱CM）與安慰劑口香糖組（placebo trail，簡稱PL），受試者進行完第一次實驗後，經過至少7天的恢復期，再進行下一組實驗。實驗中，受試者先咀嚼咖啡因口香糖（內含200毫克咖啡因）或是安慰劑（不含咖啡因的一般口香糖）10分鐘，咀嚼後休息熱身15分鐘，進行打擊能力檢測，使用T座打擊的方式測試，受試者須將球擊至目標位置，5球為一組，總共進行3組，中間休息10分鐘，預計測量擊球初速及擊球仰角，作為分析受試者打擊控制能力的指標。研究結果：比較實驗組及控制組，發現補充咖啡因口香糖組，在擊球初速（CM:98.6 km/h; PL: 97.1 km/h; p=0.032）及最大擊球初速（CM:103.3 km/h; PL: 101.7 km/h; p=0.029）的表現皆高於安慰劑組。在擊球仰角及擊球穩定性則無顯著差異。研究結論：本研究顯示運動前咀嚼咖啡因口香糖，可以顯著提升女壘球員的擊球初速及最大擊球初速表現。
並列摘要
Background: Caffeinated gum has been reported to improve exercise performance by elevating power, anaerobic capability and concentration. This study investigated the effects of caffeine chewing gum on hitting performance of trained female softball players.Methods: 14(age: 20.6±1.3 years; height: 160.0±4.9 cm; weight: 59±6.1 kg) female trained softball players completed caffeine gum trial (CM) and placebo trail (PL) in a single-blind cross-over design with random order separated by at least 7 days. The participants chewed either 200 mg of caffeinated gum (CM) or placebo gum (PL) without caffeine for 10 min. After a 15-minute rest and warming up, the participants hit 5 balls in the batting tee for 3 times with 10 min rest. The exit velocity and exit angle were used to analyze a batters ability. Result: Exit velocity (CM:98.6 km/h; PL: 97.1 km/h; p=0.032) and max exit velocity (CM:103.3 km/h; PL: 101.7 km/h; p=0.029) of the CM trial were significantly higher than that of the PL trial. There were no significant differences in exit angle and swing stability.Conclusion: The results of this study indicated that chewing caffeinated gum before softball hitting can significantly enhance exit velocity and max exit velocity for female softball players.