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Energetic Profile in Forehand Loop Drive Practice with Well-Trained, Young Table Tennis Players

1
School of Physical Education & Sport Training, Shanghai University of Sport, Shanghai 200438, China
2
School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China
3
Division of Kinesiology and Health, University of Wyoming, Laramie, WY 82071, USA
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(10), 3681; https://doi.org/10.3390/ijerph17103681
Received: 23 April 2020 / Revised: 18 May 2020 / Accepted: 21 May 2020 / Published: 23 May 2020
(This article belongs to the Special Issue Exercise and Performance Physiology)
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−1. 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−1) 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−0.601 where Y is the energy cost and x is the stroke frequency, R2 = 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. View Full-Text
Keywords: high repetition practice; energy contribution; energy cost; stroke frequency; oxygen uptake; table tennis high repetition practice; energy contribution; energy cost; stroke frequency; oxygen uptake; table tennis
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Li, Y.; Li, B.; Wang, X.; Fu, W.; Dai, B.; Nassis, G.P.; Ainsworth, B.E. Energetic Profile in Forehand Loop Drive Practice with Well-Trained, Young Table Tennis Players. Int. J. Environ. Res. Public Health 2020, 17, 3681.

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