Karate (Wado Ryu) Answers

Transcription

1 Karate (Wado Ryu) Answers Karate is an art of unarmed combat using hands and feet, which can be used for self-defence. It involves a variety of kicking, punching, blocking and striking movements and requires high levels of physical fitness, control, speed and suppleness from the players. Watch the video clips and answer the following questions so you can get a better understanding of this sport. Quintic video files you will use: 1) Kumite (Sparring) 2) Shuto side ( Knife hand ) 3) Yoko Geri side ( Side kick ) 4) Oi Tsuki side 5) Ushio Geri side (Kick behind) 6) Mae Geri - front (Meageri- front) 7) Mawashi Geri 8) Age Uke - side (Rising block) 9) Shuto Uke side (Knife hand block) 10) Kata 4 Pinan Yodan (Formal exercise) 11) Mae Geri side (Front kick) PLAY AND PAUSE Open the video file Kumite 1) Play the video at normal speed and Slow *2. (i) Why would you want to play the video at full- speed? (ii) Why would you want to play the video at the slower speeds?

2 Open the video file Shuto side 2) You are teaching a novice to perform the Shuto move. Watch the skill frame by frame and suggest some simple coaching points for them to remember about; (i) Leg movement... (ii) Arm movement... (iii) (iii) Relationship between arms and legs... Finishing position

3 TIMING Open the video file Shuto side 3) Using the markers and stopwatch, calculate the time from frame 0 to: (i) Right foot contact (ii) Right arm and hand extension (iii) Left foot contact (iv)whole movement (v) Right foot contact to Right hand and arm extension ANGLES AND SHAPES Open the video file Yoko Geri side 4) Using this angles button find out the angle between the right knee, hip and shoulder in the following frames: Frame 0. Frame 45 Frame 62 Frame 80 Frame Frame Frame Open the video Oi Tsuki- Yoi 2 5) (i) Every 5 frames between 0 and 105 draw a yellow line down the length of the left player s body and a pink circle round his head, and draw a blue line down the right player s body and a red circle round his head. (ii) (iii) This will create a trace of the path of the player s body throughout the sequence. Create a Single Image Capture of the finished image and save it as a JPEG. 107

4 Open the video Ushio Geri Side 6) Clear all the drawings from that video clip. Now, draw a vertical red line at the end of the player s left foot and a yellow vertical line at the end of his right foot at frame 0 and answer the following questions. (i) (ii) (iii) (iv) During the movement between frame 0 and 100 which part of the player s body cross the red, or yellow lines? In which frame does player s right foot cross the red line? How long after his right foot crossing the red line does his leg reach full extension? In the next 100 frames would the same parts of the player s body cross the lines? SYNCRONISATION Open the video Mae Geri Front in the Main Window Open the video Mawashi Geri in the Best Window 7) Scroll the video in the Main window to frame 35. Scroll the video in the Best window to frame 45. Synchronise the two videos at these points. Play the videos through together and comment on any differences in: (i) (ii) Leg Height (kicking leg) Kick movement 108

5 (iii) Knee angle of support leg (non striking) (iv) Angle of the trunk to the vertical (v) Body rotation through kick BLEND Open the video Age Uke- side 8) Play the video and pause it at frame 26. (i) What key point in the action does this represent? (ii) Set Background at this frame so it can be used in the Blend function. (iii) How has the player changed his body shape compared to the background in: Frame 107? Frame 116? 109

6 OVERLAY Frame 166? Frame 186? Open the video Age Uke- side in the Main window Open the video file Shuto Uke- Side in the Best Window 9) Play and pause both videos at the frame in which they are striking with their right arm. (i) Synchronise the videos and press the Set Overlay button under the Blend tab in the Main window. (NB Remember to make sure that both players are at a similar place in their respective screens before pressing Set Overlay ) (ii) At each of the following frames, name one similarity and one difference you notice about the moves. Frame Similarity Difference

7 PHOTO SEQUENCE Open the video Kata 4 Pinan Yodan 10) (i) Use the following buttons to calculate the specific angles at the certain frames: hint complete part (ii) at the same time. Frame 189 Frame 309 Frame 383 Frame 425 Frame 457 Frame 527 Frame 985 Frame 875 Frame 1339 Description Angle ( ) Angle of the right elbow Angle of the left knee Angle of the left elbow Angle of the left knee Angle of the right knee Angle of the right hip to the horizontal Angle of the right elbow Angle of the left ankle Angle of the left shoulder to the vertical (ii) Create a 9 frame Multiple Screen Image Capture sequence using the above frames. In each image, the lines forming the angle should be visible as in the illustration shown. (iii) Save this as a JPEG Open this JPEG in Microsoft Word and give it an appropriate title. (iv) Save and ask your teacher if you may print this document. 111

8 DIGITISATION (Quintic Coaching & Biomechanics only) Open the video Mea Geri - side 11) A digitisation frame has already been completed for this video, which tracks the right hand side of the karate player s body. (i) Load the digitisation frame and complete a digitisation trace between frames 10 and 66 (ii) In the animation window, display the trace using the following combinations of buttons pressed down: (Each time save the image as a JPEG) a) b) + c) d) + e) + (iii) Using the ruler function following:, find out the lengths of the (Hint: Scroll through the video frames until you see the best angle at which to take your measurement i.e. for the upper-arm measurement, when the shoulder and elbow are clearly visible.) Body Segment Hand Forearm Thigh Upper-arm Length (m) 112

9 12) Fill in the tables with the correct number of stars to produce the following graphs. Choose 1 star, 2 stars or 0 stars for each box: a) Horizontal acceleration of all points without exact values displayed.acceleration of the left elbow with exact values displayed. Velocity of the left knee without exact values displayed. b) Vertical distance of all points without exact values displayed. Horizontal acceleration of all points with exact values displayed. Distance of the left shoulder without exact values displayed. 113

10 c) Velocity of the left elbow and left shoulder with exact values displayed. Vertical distance of all points without exact values displayed. Horizontal acceleration of the left toe without exact values displayed. d) Vertical distance of all points with exact values displayed. Horizontal acceleration of the left hip without exact values displayed. Vertical velocity of the left shoulder without exact values displayed. 114

11 13) Look at the data that you saved in Microsoft Excel and answer the following questions: (i) What is the maximum horizontal velocity of the shoulder throughout the sequence? (ii) What is the maximum vertical acceleration of the wrist throughout the sequence? (iii) What is the horizontal distance of the shoulder at frame 61? (iv) What is the maximum vertical distance of the ankle throughout the sequence? (v) Which body part had the fastest velocity throughout the sequence and why? Explain your answer. 14) Look at the graphs and data that have been produced by the digitisation that you have just completed. Use your experience and sports science background to suggest interventions and training methods to improve the athletic performance of the karate player. Quintic would like to thank Josh Johnson and J.J Karate Academy for supplying the video footage. All video footage was captured and edited using Quintic Biomechanics 9.03v9 by Quintic Consultancy Ltd