Karasiak, FC and Guglielmo, LGA. Effects of exercise-induced muscle damage in well-trained cyclists' aerobic and anaerobic performances. J Strength Cond Res 32(9): 2632-2640, 2018-The purpose of this study was to analyze the effect of exercise-induced muscle damage (EIMD) in gross efficiency and in aerobic and anaerobic cycling performances. Nine well-trained cyclists (30.8 ± 6.4 years, cycling experience 8.4 ± 5.6 years) visited the laboratory 5 times. During the first visit, they performed a maximal incremental test on a cycle ergometer, to identify V[Combining Dot Above]O2max (55.2 ± 4.9 ml·kg·min) and maximum aerobic power (Pmax; 327.0 ± 28.5 W). During the second visit (control), they cycled 5 minutes at 60% of Pmax, 5 minutes at 70% of Pmax, 5-minute time trial, and Wingate test. During the third visit, the athletes performed 10 sets of 10 countermovement jumps, to generate EIMD. The athletes repeated the second visit tests (control) 30 minutes, 48 hours (fourth visit), and 96 hours (fifth visit) after the jumps. The rated perceived exertion values increased 48 hours after EIMD (3.8 vs. 3.1) at 60% of Pmax. The ventilation and respiratory exchange ratio increased at 60% of Pmax (up to 4.3 L·min and 0.04, respectively) and at 70% of Pmax (up to 5.4 L·min and 0.05, respectively), mainly after 96 hours. There was no significant difference in V[Combining Dot Above]O2, V[Combining Dot Above]CO2, and heart rate in submaximal exercises, neither in time trial. No differences were observed in the Wingate tests. In conclusion, the EIMD did not impair gross efficiency, nor aerobic and anaerobic performances in trained cyclists. However, despite the benefits of strength training to improve cyclists' performance, coaches must be cautious to the days after the strength training sessions because EIMD may change the perception of maintaining a given submaximal intensity during training or competition.

译文

:Karasiak,FC和Guglielmo,LGA。运动诱发的肌肉损伤对训练有素的自行车有氧和无氧运动性能的影响。 J Strength Cond Res 32(9):2632-2640,2018-本研究的目的是分析运动诱发的肌肉损伤(EIMD)对总效率以及有氧和无氧循环运动性能的影响。九名训练有素的自行车手(30.8±6.4岁,骑车经历8.4±5.6年)共5次到实验室。在第一次拜访期间,他们在自行车测功机上进行了最大增量测试,以识别V [O2max]最大值(55.2±4.9 ml·kg·min)和最大有氧功率(P​​max; 327.0±28.5 W)。在第二次访问(对照)期间,他们以Pmax的60%骑车5分钟,以Pmax的70%骑车5分钟,进行了5分钟的时间试验和Wingate测试。在第三次访问期间,运动员进行了10组10次反向运动跳跃,以生成EIMD。运动员在跳跃后30分钟,48小时(第四次访问)和96小时(第五次访问)重复第二次访问测试(对照)。在Pmax为60%的情况下,EIMD后48小时的额定感知劳累值增加(3.8对3.1)。主要在96小时后,通气和呼吸交换率在Pmax的60%(分别高达4.3 L·min和0.04)和70%的Pmax(分别高达5.4 L·min和0.05)时增加。在次最大运动量中,V [O],[V] CO2和心率无显着差异,在时间试验中也没有。在Wingate测试中未观察到差异。总之,在训练有素的自行车手中,EIMD不会影响总效率,也不会影响有氧和厌氧性能。但是,尽管进行力量训练可以提高骑自行车者的表现,但教练必须谨慎对待力量训练后的几天,因为EIMD可能会改变在训练或比赛中维持给定最大强度的观念。

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