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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

Rivista di Medicina, Traumatologia e Psicologia dello Sport


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ORIGINAL ARTICLE  EXERCISE PHYSIOLOGY AND BIOMECHANICS


The Journal of Sports Medicine and Physical Fitness 2017 November;57(11):1445-55

DOI: 10.23736/S0022-4707.17.06920-1

Copyright © 2017 EDIZIONI MINERVA MEDICA

lingua: Inglese

Training effect of a stationary preprogrammed target dummy on visual response time and contest performance of karate athletes

Yen-Hsiu LIU 1, 2, Shih-Tsung CHANG 3, Shu-Chen CHEN 4, Ai-Yin LIM 5, Chia-Wei CHANG 6, Lai-Chu SEE 7, 8, 9

1 Department of Physical Education, Chang Gung University, Taoyuan, Taiwan; 2 Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou, Taiwan; 3 Office of Physical Education, Chung Yuan Christian University, Taoyuan, Taiwan; 4 Department of Recreational Sports Management, Yu Da University of Science and Technology, Zaoqiao, Taiwan; 5 Graduate Institute of Physical Therapy, Chang Gung University, Taoyuan, Taiwan; 6 Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; 7 Department of Public Health, College of Medicine, Chang Gung University, Taoyuan, Taiwan; 8 Biostatistics Core Laboratory, Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan; 9 Division of Rheumatology, Allergy and Immunology, Chang Gung Memorial Hospital, Linkou, Taiwan


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BACKGROUND: Response time (RT) is crucial in karate athletes and can be trained. The aim of this study was to compare standing eye-hand RT and contest performance in nonelite karate athletes who underwent 6 weeks of training using either a stationary preprogrammed target dummy (experimental group) or traditional karate instruction (control group).
METHODS: Forty male nonelite karate athletes (20 in each group) were recruited. Standing RT and contest performance was assessed before and after training. Attack RT (eye-hand or eye-leg) and success rate were measured in the experimental group only during training.
RESULTS: Age, years of karate practice, Body Mass Index, and standing RT before training did not significantly differ between groups. In the control group, standing RT was significantly improved in the dominant hand after training (25.62±24.18 ms, P=0.0003), but there was no significant improvement in standing RT of the nondominant hand and karate contest score. In the experimental group, standing RT was significantly faster after training (improvement in dominant hand: 69.84±50.85 ms, P<0.0001; improvement in nondominant hand: 68.94±59.43 ms, P<0.0001), and the karate contest score was significantly improved (P=0.0234). During the training period, mean attack RT improved from 1047.4 ms in week1 to 944.9 ms in week6 (P<0.001). However, the success rate gradually decreased from 89.3% (week 1) to 62.4% (week 6) (P<0.001).
CONCLUSIONS: A 6-week training using a stationary preprogrammed target dummy improved contest performance and standing RT in both the dominant and nondominant hands of nonelite karate athletes. Improvements of RT in the dominant hand were also seen in the control group.


KEY WORDS: Reaction time - Athletic performance - Athletes - Martial arts

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Publication History

Issue published online: September 4, 2017
Article first published online: January 23, 2017
Manuscript accepted: January 17, 2017
Manuscript revised: January 2, 2017
Manuscript received: August 11, 2016

Per citare questo articolo

Liu YH, Chang ST, Chen SC, Lim AY, Chang CW, See LC. Training effect of a stationary preprogrammed target dummy on visual response time and contest performance of karate athletes. J Sports Med Phys Fitness 2017;57:1445-55. DOI: 10.23736/S0022-4707.17.06920-1

Corresponding author e-mail

lichu@mail.cgu.edu.tw