Suárez Rodríguez David, Del Valle Soto Miguel
Education, Intarnational University of La Rioja, Logroño, Spain.
BMJ Open Sport Exerc Med. 2017 Aug 16;3(1):e000250. doi: 10.1136/bmjsem-2017-000250. eCollection 2017.
The aim of this study is to find the differences between two specific interval exercises. We begin with the hypothesis that the use of microintervals of work and rest allow for greater intensity of play and a reduction in fatigue.
Thirteen competition-level male tennis players took part in two interval training exercises comprising nine 2 min series, which consisted of hitting the ball with cross-court forehand and backhand shots, behind the service box. One was a high-intensity interval training (HIIT), made up of periods of continuous work lasting 2 min, and the other was intermittent interval training (IIT), this time with intermittent 2 min intervals, alternating periods of work with rest periods. Average heart rate (HR) and lactate levels were registered in order to observe the physiological intensity of the two exercises, along with the Borg Scale results for perceived exertion and the number of shots and errors in order to determine the intensity achieved and the degree of fatigue throughout the exercise.
There were no significant differences in the average heart rate, lactate or the Borg Scale. Significant differences were registered, on the other hand, with a greater number of shots in the first two HIIT series (series 1 p>0.009; series 2 p>0.056), but not in the third. The number of errors was significantly lower in all the IIT series (series 1 p<0.035; series 2 p<0.010; series 3 p<0.001).
Our study suggests that high-intensity intermittent training allows for greater intensity of play in relation to the real time spent on the exercise, reduced fatigue levels and the maintaining of greater precision in specific tennis-related exercises.
本研究的目的是找出两种特定间歇训练之间的差异。我们首先提出一个假设，即采用工作和休息的微间隔能够实现更高的运动强度并减少疲劳。
13名竞赛水平的男性网球运动员参加了两项间歇训练，每项训练包括9个2分钟的系列，内容是在发球区后方用正手和反手进行对角线击球。一项是高强度间歇训练（HIIT），由持续2分钟的连续工作时段组成；另一项是间歇间歇训练（IIT），这次是2分钟的间歇时段，工作时段和休息时段交替进行。记录平均心率（HR）和乳酸水平，以观察两种训练的生理强度，同时记录伯格量表的主观用力程度结果以及击球次数和失误次数，以确定整个训练过程中达到的强度和疲劳程度。
平均心率、乳酸水平或伯格量表方面没有显著差异。另一方面，在前两个HIIT系列中击球次数有显著差异（系列1 p>0.009；系列2 p>0.056），但第三个系列没有。在所有IIT系列中失误次数显著更低（系列1 p<0.035；系列2 p<0.010；系列3 p<0.001）。
我们的研究表明，与实际训练时间相比，高强度间歇训练能够实现更高的运动强度，降低疲劳水平，并在特定的网球相关训练中保持更高的精准度。
