以剛體模型與肌肉模型分析排球選手攔網著地之膝關節衝擊力

Analysis of Knee Joint Impact to Volleyball Players Landing after Blocking by Using Rigid-Body Model and Muscular Model

10.29964/NCUEPE.201009.0005

陳政宇(Cheng-Yu Chen)；林國全(Guo-Chiuan Lin)；何金山(Chin-Shan Ho)；孔建嘉(Chien-Chia Kung)

排球 ； 剛體模型 ； 肌肉模型 ； 運動傷害 ； volleyball ； rigid-body model ； muscular model ； sport injury

彰化師大體育學報

9期（2010 / 09 / 01）

57 - 68

繁體中文

The goal of the study was to analyze the knee joint impact to volleyball players landing after blocking by using rigid-body model and muscular model. Eight elite volleyball players (male, 22.39±2.3 years old, 190.88±6.56 cm and 80.13±7.14 kg) were recruited in this study. Vicon motion system (T40, Vicon Motion System Ltd., UK) and two Kistler forceplates (Kistler Instrument Corp., Winterhur, Switzerland) were used to record the kniematic data and ground reaction forces synchronously. To analyze the statistical significance, SPSS (Ver. 18.0, SPSS Inc., Chicago, Illinois) was used. The results showed that the phenomenon of bilateral asymmetric loading of knee joint were significant in both of two different models (p＜.05). Though the phenomenon can’t be treat as the factor of injury, from the viewpoint of sport biomechanics that it may result in accumulated injuries of knee when muscular strength of player is fatigued. Some experiments of sport injury applied to players are not easy because the high-risk injuries may happen. Therefore, the computer-aided analysis is feasible to evaluate the mechanisms of sport injuries.

The goal of the study was to analyze the knee joint impact to volleyball players landing after blocking by using rigid-body model and muscular model. Eight elite volleyball players (male, 22.39±2.3 years old, 190.88±6.56 cm and 80.13±7.14 kg) were recruited in this study. Vicon motion system (T40, Vicon Motion System Ltd., UK) and two Kistler forceplates (Kistler Instrument Corp., Winterhur, Switzerland) were used to record the kniematic data and ground reaction forces synchronously. To analyze the statistical significance, SPSS (Ver. 18.0, SPSS Inc., Chicago, Illinois) was used. The results showed that the phenomenon of bilateral asymmetric loading of knee joint were significant in both of two different models (p＜.05). Though the phenomenon can’t be treat as the factor of injury, from the viewpoint of sport biomechanics that it may result in accumulated injuries of knee when muscular strength of player is fatigued. Some experiments of sport injury applied to players are not easy because the high-risk injuries may happen. Therefore, the computer-aided analysis is feasible to evaluate the mechanisms of sport injuries.