The effect of table tennis racket design on wrist motion

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Chen, Sicong
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Richard T. Stone
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Industrial and Manufacturing Systems Engineering
The Department of Industrial and Manufacturing Systems Engineering teaches the design, analysis, and improvement of the systems and processes in manufacturing, consulting, and service industries by application of the principles of engineering. The Department of General Engineering was formed in 1929. In 1956 its name changed to Department of Industrial Engineering. In 1989 its name changed to the Department of Industrial and Manufacturing Systems Engineering.
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Industrial and Manufacturing Systems Engineering

Unnatural postures have been identified as risk factors for hand/wrist injury problems. These postures are usually adopted among table tennis players. In attempt to alleviate wrist

discomfort, alternative table tennis rackets have been designed to reduce awkward postures. Tenaly racket and Brodmann racket are the most representative rackets and are both currently

available in the market. Additionally, a new horizontal racket was designed for this study, aiming to reduce wrist motion in the radial-ulnar plane. In this research, Tenaly racket, Brodmann racket, horizontal racket, together with traditional racket were evaluated in terms of performance, wrist range of motion, muscle activities and subjective rating. Thirty Iowa State University students participated in this study. They were divided into two groups (experienced and novice) based on preliminary test. In the experiment, participants were required to perform three stroke types: forehand drive, backhand drive and service with these four rackets. Hitting rate, wrist range of motion and muscle activities were obtained during the experiment. Participants were asked to fill out a subjective rating form after the experiment. Results from the experiment showed that subjects had best performance with Brodmann racket and worst

performance with horizontal racket. Horizontal racket was the least favored racket in both groups. However, preferences of traditional, Tenaly and Brodmann racket were different between the two groups. The experienced group strongly favored traditional and Tenaly racket because they are powerful to speed balls. In the novice group, the subjective ranking scores of these three rackets were not significant. Also, Tenaly racket was proved as the only one that could improve the posture. No significant was found in terms of muscle activities.

Tue Jan 01 00:00:00 UTC 2013