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A Kinematic Characteristics of Throwing Performance on Period When Blind`s became Sightless
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 Title & Authors
A Kinematic Characteristics of Throwing Performance on Period When Blind`s became Sightless
Choi, Jung-Kyu;
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The purpose of this study is to compare and analyze a kinematic characteristics of throwing performance among born visually impaired, postnatal visually impaired and visually correct people through their kinematic characteristics. Another purpose of this study is to prevent injury and improve blind`s exercise leadership and physical abilities. Three video cameras were used and each camera`s shooting velocity was 60field/sec. Then the longest thrown pose was collected and analyzed by using Kwon 3D ver. 3.1 program. The results obtained from this study were followings; 1. During release, the fastest speed of ball was visually corrected followed by postnatal visually impaired and then born visually impaired. 2. Visually corrected used wrist joint well and had wide body round range with similar motion patterns, however born visually impaired couldn`t do this at all. 3. Visually corrected used waist to lead shoulder at Phase 2 while throwing ball, but some of born visually impaired and postnatal visually impaired couldn`t use waist to lead shoulder. 4. Visually corrected looked at the way where ball would go, but blinds couldn`t look where ball would go. 5. Not like visually corrected who show similar patterns, born visually impaired showed each different patterns and some postnatal visually impaired showed similar patterns with visually corrected. 6. While throwing ball, visually corrected showed flexible weight-movement, postnatal visually impaired were not good as visually corrected, and born visually impaired couldn`t do weight-movement at all. Synthetically, this result showed that throwing motions are affected a lot by the time when people became blind.
 Cited by
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