Kinematic characteristic differences of women’s volleyball spikes between different positions

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Other Title
  • ポジション別にみた女子バレーボール選手のスパイク動作の特徴
  • ポジション別にみた女子バレーボール選手のスパイク動作の特徴 : 女子選手のスパイク動作特性
  • ポジション ベツ ニ ミタ ジョシ バレーボール センシュ ノ スパイク ドウサ ノ トクチョウ : ジョシ センシュ ノ スパイク ドウサ トクセイ
  • Kinematic characteristics of women’s spikes
  • 女子選手のスパイク動作特性

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The purpose of this investigation was to elucidate the kinematic characteristics differences of volleyball spikes between different positions in women players. Twelve women collegiate volleyball players (six side-spikers and six middle-blockers） were participated in this study as volunteered. All participants were equipped with 24 passive reflected makers on their body and spiked the ball. Two synchronized highspeed digital cameras (299.7 Hz） set out of the volleyball court were used to collect the 3D marker trajectories. Jumping height, swing speeds of upper limbs during the flight phase and the ball speed were determined by motion analysis software (Frame-DIAS V, DKH, Japan）. The results demonstrated that the jumping height (p ＜0.05） and the ball speed (p ＜ 0.05） were significantly higher values in the side-spikers compared to those of the middle-blockers respectively, whereas there were no significant differences in the hand displacement between the positions. The swing speeds of the hand and the wrist revealed the significant differences, which was greater in the side-spikers than in the middle-blockers. In addition, the absolute values of the shoulder velocity and the trunk horizontal abduction angular velocity were also greater in the side-spikers. These observations suggest that the greater jumping height and the proximal swing motions might be important to increase the distal swing velocity and increase the ball speed.

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