教師著作

Permanent URI for this collectionhttp://rportal.lib.ntnu.edu.tw/handle/20.500.12235/78999

Browse

Filters

2005 - 20062

Settings

Has files: NoSubject: search.filters.subject.taekwondo

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Biomechanical analysis of back kicks attack movement in Taekwondo
    (2006-07-18) 黃長福; Chen Lin Lee; Chenfu Huang
    The purpose of this study is to compare three Taekwondo back kicks attack movements. Seven male Taekwondo athletes (age: 21.0 ± 2.0 year old, height: 180.4 ± 4.4cm, weight: 69.1 ± 26.1kg) performed the back kick, jump back kick and 360° jump back kick where the left leg was attack leg. Two Redlake (60Hz) cameras and an accelerometer were used to collect data. The results revealed that the jump back kick’s attack force is greater than in 360° jump back kick. The angular velocity of knee and low trunk of back kick and jump back kick are faster than 360° jump back kick during rotation phase. The 360° jump back kick has a greater attack height and distance when striking the bag. The study suggests back kicking as important skill which the athletes need to practice for improving the kicking ability.
  • No Thumbnail Available
    Item
    The biomechanical analysis of the taekwondo front-leg axe-kick
    (2005-08-27) 黃長福; Yeh-Jung Tsai; Guo-Hong Gu; Chia-Jung Lee; Chen-Fu Huang; Chien-Lu Tsai
    The purpose of the study was to analyze the biomechanics of taekwondo front-leg axekick. One force plates, two synchronized high-speed cameras were used to measure biomechanical parameters in each phase of the front-leg axe-kick. The results included: 1. The average reaction time and movement time were 0.423 sand 0.327 s, which respectively occupied about 56% and 44% of attack time. 2. The maximum velocity of hip, knee and ankle were 1.74 m/s, 5.25 m/s and 7.43 m/s respectively. When the kicking leg touched the target, the velocity of knee and ankle were 0.78m/s, 1.72m1s, and 4.64m1s respectively. 3. The peak vertical GRF and impulse were 0.96 SW and 77.57N-s. For decreasing the movement time, it's suggested that an athlete should increase the power and flexibility of lower extremities during the training section.