Regional Scientific Centre of the Russian Academy of Education, 690922 Vladivostok, Russia.
Far Eastern Federal University, 690922 Vladivostok, Russia.
Comput Math Methods Med. 2019 Nov 19;2019:4217491. doi: 10.1155/2019/4217491. eCollection 2019.
Eye-hand coordination during dart throwing includes both the sensory and motor components, as well as cognitive variables, for example, the direction of the subject's attention to the target or to the hand kinematic. In the present study, subjects performed dart throws in the eyes-open and eyes-closed conditions with simultaneous recording of the kinematics of the throwing hand. The results showed that the position of the hand in its raising phase was closer to the torso when performing more accurate throws with the eyes-open condition compared to more peripheral throws and throws performed in the eyes-closed condition. Following the dart release, the position of the hand in the eyes-open condition was lower compared to the eyes-closed condition. Additionally, in the eyes-closed condition, raising the hand in its backward moving phase negatively predicts the throwing accuracy. Thus, the early phase of the movement is associated with attention, and the final phase is associated with the visual feedback about the throwing accuracy. Raising the hand in the eyes-closed condition reflects an increase in muscle tension, which leads to a decrease in the accuracy of movement. The results of the study can be applied in sports and in the treatment of hand-eye-coordination disorders.
投掷飞镖时的手眼协调包括感觉和运动成分，以及认知变量，例如，受试者将注意力集中在目标或手部运动学上的方向。在本研究中，受试者在睁眼和闭眼条件下进行飞镖投掷，同时记录投掷手的运动学。结果表明，与更外围的投掷和闭眼条件下的投掷相比，在睁眼条件下进行更准确的投掷时，手在抬起阶段的位置更靠近躯干。飞镖释放后，与闭眼条件相比，睁眼条件下手的位置较低。此外，在闭眼条件下，向后移动阶段抬起手会对投掷准确性产生负面影响。因此，运动的早期阶段与注意力有关，而最后阶段与投掷准确性的视觉反馈有关。在闭眼条件下抬起手反映了肌肉张力的增加，这会导致运动准确性降低。该研究的结果可应用于运动和手眼协调障碍的治疗。
