| 摘要 |
A game racket is provided in the grip portion thereof with a sensor for detecting changes in body characteristic of a person engaging in exercise by using the game racket. The changes in body characteristic of the person are detected in the form of electronic signals, which are converted by the sensor into data. The data are exhibited by a display which is disposed in a predetermined position of the game racket. On the basis of the data, an exerciser may adjust the pace of the exercise in which the exerciser is engaged.
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