Rowlatt G, Bottoms L, Edmonds C J, Buscombe R
a School of Health, Sport and Bioscience, School of Psychology , University of East London , Stratford , UK.
b Department of Psychology and Sports Science , University of Hertfordshire , Hatfield , UK.
Eur J Sport Sci. 2017 May;17(4):433-440. doi: 10.1080/17461391.2016.1251497. Epub 2016 Nov 9.
This study investigated the impact that mouth rinsing carbohydrate solution has on skill-specific performance and reaction time following a fatigue-inducing bout of fencing in epee fencers. Nine healthy, national-level epee fencers visited a laboratory on two occasions, separated by a minimum of five days, to complete a 1-minute lunge test and Stroop test pre- and post-fatigue. Heart rate and ratings of perceived exertion (RPE) were recorded during completion of the fatiguing protocol. Between fights the participant's mouth rinsed for 10 seconds, either 25 ml of 6.7% maltodextrin solution (MALT) or water (PLAC). Blood lactate and glucose were recorded at baseline, pre- and post-testing. Results showed an increase in heart rate and overall RPE over time in both conditions. There were no differences in blood glucose (F(1,8) = .63, P = .4, η = .07) or blood lactate levels (F(1,8) = .12, P = .70, η = .01) between conditions as a function of time. There was a significant improvement in lunge test accuracy during the MALT trial (F(1,8) = 5.21, P = .05, η = .40) with an increase from pre (81.2 ± 8.3%) to post (87.6 ± 9.4%), whereas there was no significant change during the placebo (pre 82.1 ± 8.8%, post 78.8 ± 6.4%). There were no recorded differences between conditions in response time to congruent (F(1,8) = .33, P = .58, η = .04) or incongruent stimuli (F(1,8) = .19, P = .68, η = .02). The study indicates that when fatigued mouth rinsing MALT significantly improves accuracy of skill-specific fencing performance but no corresponding influence on reaction time was observed.
本研究调查了击剑重剑运动员在经历诱发疲劳的一轮击剑后，漱口碳水化合物溶液对特定技能表现和反应时间的影响。九名健康的国家级重剑运动员分两次前往实验室，两次之间至少间隔五天，以在疲劳前后完成1分钟的弓步冲刺测试和斯特鲁普测试。在完成疲劳方案期间记录心率和主观用力程度（RPE）评分。在两场比赛之间，参与者漱口10秒，要么是25毫升6.7%的麦芽糊精溶液（MALT），要么是水（PLAC）。在基线、测试前和测试后记录血乳酸和血糖。结果显示，在两种情况下，心率和总体RPE均随时间增加。作为时间的函数，不同条件下的血糖（F(1,8) = 0.63，P = 0.4，η = 0.07）或血乳酸水平（F(1,8) = 0.12，P = 0.70，η = 0.01）没有差异。在MALT试验期间，弓步冲刺测试的准确性有显著提高（F(1,8) = 5.21，P = 0.05，η = 0.40），从测试前的（81.2 ± 8.3%）增加到测试后的（87.6 ± 9.4%），而在安慰剂试验期间没有显著变化（测试前82.1 ± 8.8%，测试后78.8 ± 6.4%）。在对一致（F(1,8) = 0.33，P = 0.58，η = 0.04）或不一致刺激的反应时间方面，不同条件之间没有记录到差异（F(1,8) = 0.19，P = 0.68，η = 0.02）。该研究表明，疲劳时漱口MALT可显著提高特定技能击剑表现的准确性，但未观察到对反应时间有相应影响。
