Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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Kinematic Analysis of Drag Flick Shooting Motion for Training Shooters Specializing in Penalty Corners in Women's Field Hockey: A Case Study

여자 필드하키 페널티코너 전문 슈터 양성을 위한 Drag Flick 슈팅 동작의 운동학적 분석: 사례 연구

  • Received : 2019.06.10
  • Accepted : 2019.06.18
  • Published : 2019.06.30
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Abstract

Objective: This study aims to propose an efficient technical model through a kinematic analysis of field hockey drag flick shooting motion in laboratory situations and game situations and to build up the basic data on drag flick shooting technique through a comparative analysis of a Korean specialized shooter and specialized shooters of competing Asian countries. Method: This study selected one Korean female national specialized shooter and seven specialized shooters of competing countries, China, Japan, India, and Malaysia, who participated in the 2018 Asian Hockey Champions Trophy as research subjects. In exercise situations, a 3-D motion analysis utilizing an infrared camera was conducted, while in game situations, an image-based 3-D motion analysis utilizing a digital camera was conducted. Results: The Korean specialized shooter had smaller changes in the angles of the trunk and the stick in game situations than in exercise situations. She had a high angular velocity of the trunk and the stick head, and the maximum speed of the ball was high. The Korean specialized shooter had the maximum angular velocity of the trunk higher than the specialized shooters of the competing countries did, and the angular velocity of the stick head and the maximum speed of the ball were in the average level. Conclusion: As for drag flick shooting in game situations, changes in the angle of the trunk and the stick were small, and the angular velocity was high due to the pressure that the shooters should perform the motion fast with the defenders' interruptions, and this high angular velocity of the trunk and the stick head affected the movement of the ball. Thus, the maximum speed of the ball was higher in game situations than in exercise situations. The Korean specialized shooter had the maximum angular velocity higher than the specialized shooters of the competing countries did; however, the maximum speed of the ball was average, and it turned out that the maximum speed of the ball was associated with the angular velocity of the stick head in P3. Therefore, Korean specialized shooters need complementary training for a change to the torque of the stick head, using the strong torque of the trunk.

Keywords

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Figure 1. Position of reflective markers

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Figure 2. Defining events and phases

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Figure 3. Defining trunk and stick angle

Table 1. Characteristics of the participants

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Table 2. Trunk and stick angle

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Table 3. Trunk and stick angular velocity

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Table 5. Trunk and stick angle

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Table 4. Maximum ball speed

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Table 6. Trunk and stick angular velocity

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Table 7. Maximum ball speed

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References

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