肌酸增補及恢復方式對高強度間歇踏車動後下肢肌群無氧動力之效應

本研究旨在探討肌酸增補及恢復方式對高強度間歇踏車後下肢肌群無氧動力之效應。受測者為十六名國立臺灣體育學院男子籃球隊，年齡為 18-22歲，將隨機分配為肌酸增補組(雙盲設計; 劑量 0.35 g /體重; 7 天)及控制組並進行包括無氧縱跳測驗(5 秒及 45 秒跳)與兩種踏車時間(15 秒、60 秒)及兩種恢復方式(靜態及動態恢復以 40%最大耗氧量)運動測試。每次運動測試包括 8 回合踏車，每回合間恢復時間為三分鐘。運動測試前及每回合恢復三分鐘後進行 5 秒無氧縱跳測驗。無氧縱跳測驗將收集及計算下肢肌群動力平均值。所得數據將以獨立樣本變異數分析考驗無氧動力值在肌酸增補組及控制組之差異。以重複量數三因子變異數分析考驗無氧動力值在肌酸增補及不同運動時間、恢復方式之差異及交互作用。以皮爾遜積差相關係數分析肌酸增補劑量與無氧動力值之關係。本研究統計顯著水準定為p<0.05。根據結果，本研究認為肌酸增補、動態恢復、及短時間運動是維持間歇運動時下肢無氧平均動力之重要因素。
The purpose of the study was to examine the effects of creatine supplement on anaerobic jumping test following heavy, intermittent cycling with active and passive recovery. Subjects were male basketball players (N=16; age=18-22 yrs) from Department of Athletics, National Taiwan College of Physical Education. Subjects were randomly assigned to creatine supplement (double blind; 0.35g/kg wt) and control groups. Anaerobic test was a 5s consecutive vertical jump. Experimental protocol was a combination of two durations (15s and 60s) and two modes of recovery (passive and active recovery; cycling at 40% VO2max). Exercise will consist of 8 bout of cycling at 120% VO2 max interspersed with three minutes recovery periods. Before cycling and following recovery period, 5s anaerobic jumping test will conduct for each bout. Mean power was determine. Independent one-way ANOVA was performed to compare the effect of creatine supplement and control on power output. Repeated measure of 3 way factorial ANOVA was perform to examine the effect of exercise duration, recovery mode, and exercise bout. Pearson moment product correlation coefficient was performed to examine the relationship between supplement dosage of creatine and anaerobic power output. Statistic significant was p<0.05 in the study. In summary, results suggest that creatine supplementation, active recovery, and shortening exercise duration is the crucial factor in maintaining the anaerobic power of lower extremities during intermittent exercise.