적외선카메라를 이용한 다트던지기 운동에서의 제한된 손목관절 움직임 분석

Abstract

Abstract: Wrist joints consist of irregularly shaped carpal bones and other complicated structures. Thus, evaluatingthe motion of a wrist joint is a challenging task. In this study, we used an infrared camera to perform a kinematicanalysis of a dart-throwing motion. We measured the difference between the movement of a normal wrist and con-strained wrist (wrist with a wrist glove) in the dart-throwing motion with thirty six healthy participants. We measuredthe ulna flexion - radial extension motion using the attached passive marker and analyzed it using Polygon softwareand SPSS. The pitch and yaw motions with a glove was bigger than the ones without a glove by 20 and 15 degrees,respectively. On the other hand, the roll motion without a glove was bigger than the one with a glove by 7 degree.Wilcoxon signed rank test (p < 0.05) confirmed that there are significant differences between the motion with andwithout a glove. It was found that the magnitude of the pitch and yaw motion with a constrained wrist joint towardradial extension in dart-throwing motion is smaller than the one with a normal wrist joint. However, a normal wristjoint showed a bigger movement in the roll direction.Key words: Wrist joint, Dart -throwing motion, Infrared camera