Influence of mobile device operations on the walking-Including the motion taking it out and putting it back-

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  • モバイル機器の使用が歩行動作に与える影響―取り出し動作および収納動作を含めて―
  • モバイル キキ ノ シヨウ ガ ホコウ ドウサ ニ アタエル エイキョウ トリダシ ドウサ オヨビ シュウノウ ドウサ オ フクメテ
  • –Including the motion taking it out and putting it back–
  • ―取り出し動作および収納動作を含めて―

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The influences of mobile device operations on the walking stabilities have been reported so far. The present author presumes not only the normal device operations, but the actions like taking the device out and put it back would have still more influences on walking. The purpose of this study is to confirm the latter influences using a treadmill experiment. Twenty four male subjects have some trials of using mobile device with walking over treadmill. These trials are taking a mobile device out, operating and putting back. In that time, the gait is measured with motion capture systems. Additionally, EMG of gastrocnemius muscle is measured as a Bio-information. Their measurement items (position of tiptoe, posture of upper body, EMG, error ratio, operation time) are analyzed. This position of tiptoe is compared with one of normal walking, and stability of the walking is evaluated by a new index δst that we invented. As the results, the stability of walking with using a mobile device was decreased. On taking out and putting back, the stability of walking was decreased, and EMG was increased.

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