School of Physical Education & Sport Training, Shanghai University of Sport, Shanghai 200438, China.
School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China.
Int J Environ Res Public Health. 2020 May 23;17(10):3681. doi: 10.3390/ijerph17103681.
The forehand loop drive is one of the primary attacking techniques in table tennis and is practiced at a large volume during training. The aim of this study was to investigate the energetic profile of the high-repetition forehand loop drive practice in table tennis. Twenty-six well-trained, young table tennis players performed a treadmill graded exercise test to determine their peak oxygen uptake as a measure of overall cardiorespiratory fitness and an incremental table tennis stroke test with 3-min intervals during the forehand loop drive with a ball-throwing robot at a frequency of 35 to 85 strokes∙min. Pulmonary and blood parameters were measured and analyzed with a portable spirometry system and a blood lactate analyzer. Energy contributions were calculated from aerobic, anaerobic lactic, and anaerobic alactic pathways for each stroke frequency. Energy cost was defined as the amount of energy expended above resting levels for one stroke. Repeated-measures analyses of variance (ANOVA) with the stroke frequency (35,45,55,65,75, or 85 strokes/min) as a within-subject factor were performed for the dependent variables. A Power regression was performed for the energy cost as a function of the stroke frequency. Findings demonstrated a function of Y = 91.566·x where Y is the energy cost and x is the stroke frequency, R = 0.9538. The energy cost decreased at higher stroke frequencies. The energy contributions from aerobic, anaerobic lactic, and anaerobic alactic pathways at each stroke frequency ranged from 79.4%-85.2%, 0.6%-2.1%, and 12.9%-20.0%, respectively. In conclusion, the energy cost of the forehand loop drive decreased at higher stroke frequencies. The high-repetition forehand loop drive practice was aerobic dominant and the anaerobic alactic system played a vital role.
正手弧圈球是乒乓球的主要进攻技术之一，在训练中大量练习。本研究旨在探讨乒乓球高重复正手弧圈球练习的能量特征。26 名训练有素的年轻乒乓球运动员进行了跑步机分级运动测试，以确定他们的峰值摄氧量作为整体心肺功能的衡量标准，以及在 3 分钟的间隔内使用球抛机器人进行递增式乒乓球击球测试，频率为 35 至 85 次·分钟。使用便携式肺活量计系统和血液乳酸分析仪测量和分析肺和血液参数。为每个击球频率计算来自有氧、无氧乳酸和无氧非乳酸途径的能量贡献。能量消耗定义为每一击超过静息水平的能量消耗。对依赖变量进行了以击球频率（35、45、55、65、75 或 85 次/分钟）为内因素的重复测量方差分析（ANOVA）。对能量消耗作为击球频率的函数进行了幂回归。结果表明，Y = 91.566·x 其中 Y 是能量消耗，x 是击球频率，R = 0.9538。能量消耗随着击球频率的增加而降低。在每个击球频率下，来自有氧、无氧乳酸和无氧非乳酸途径的能量贡献分别为 79.4%-85.2%、0.6%-2.1%和 12.9%-20.0%。总之，正手弧圈球的能量消耗随着击球频率的增加而降低。高重复正手弧圈球练习以有氧为主，无氧非乳酸系统起着至关重要的作用。
