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How did KM Break His Muscle Fibers?

How did KM Break His Muscle Fibers?. Jeffrey. By Playing Badminton , of Course!. Definition.

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How did KM Break His Muscle Fibers?

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  1. How did KM Break His Muscle Fibers? Jeffrey

  2. By Playing Badminton, of Course!

  3. Definition • Badminton is a racquet sport played by either two opposing players (singles) or two opposing pairs (doubles), who take positions on opposite halves of a rectangular court that is divided by a net

  4. Badminton Court

  5. How to Score? • Players score points by striking a shuttlecock with their racquet so that it passes over the net and lands in their opponents' half of the court • A rally ends once the shuttlecock has struck the ground, and the shuttlecock may only be struck once by each side before it passes over the net

  6. Shuttlecocks

  7. Shuttlecocks • A shuttlecock (often abbreviated to shuttle and also known as a bird or birdie) is a high-drag projectile, with an open conical shape: the cone is formed from sixteen overlapping goose feathers embedded into a rounded cork base. The cork is covered with thin leather • Shuttles with a plastic skirt are often used by recreational players to reduce their costs as feathered shuttles break easily.

  8. Rackets

  9. Rackets • Badminton rackets are light, with top quality rackets weighing between about 70 and 100 grams (without strings) • They are composed of many different materials • Carbon fiber composite • Aluminum • Wood

  10. Strings • Badminton strings are thin, high performing strings in the range of about 0.65 to 0.73 millimeters thickness • Thicker strings are more durable, but many players prefer the feel of thinner strings • String tension is normally in the range of 80 to 130 newtons (18 to 36 lbf)

  11. Strings • Recreational players generally string at lower tensions than professionals, typically between 18 and 25 lbf (110 N) • Professionals string between about 25 and 36 lbf (160 N) • It is often argued that high string tensions improve control, whereas low string tensions increase power

  12. Scoring System • The scoring system changed in May 2006 • Each game is played up to 21 points, with players scoring a point whenever they win a rally • A match is the best of three games

  13. Serve In General • At the start of the rally, the server and receiver stand in diagonally opposite service courts • The server hits the shuttlecock so that it would land in the receiver's service court • A badminton serve must be hit from below the waist in underhand form

  14. Serve for Singles • In singles, the server stands in his right service court when his score is even, and in his left service court when his score is odd

  15. Serve for Doubles • In doubles, if the serving side wins a rally, the same player continues to serve, but he changes service courts so that he serves to each opponent in turn • When the serving side loses a rally, the serve passes to their opponents (unlike the old system, there is no "second serve")

  16. Serve for Doubles • If their new score is even, the player in the right service court serves; if odd, the player in the left service court serves • The players' service courts are determined by their positions at the start of the previous rally, not by where they were standing at the end of the rally • A consequence of this system is that, each time a side regain the service, the server will be the player who did not serve last time

  17. Details • When the server serves, the shuttlecock must pass over the short service line on the opponents' court or it will count as a fault • If the score reaches 20-all, then the game continues until one side gains a two point lead (such as 24-22), up to a maximum of 30 points (30-29 is a winning score)

  18. Details • At the start of a match a coin is tossed • The winners of the coin toss may choose whether to serve or receive first, or they may choose which end of the court they wish to occupy • Their opponents make the remaining choice • In less formal settings, the coin toss is often replaced by hitting a shuttlecock into the air • whichever side it points to serves first

  19. Details • In subsequent games, the winners of the previous game serve first • For the first rally of any doubles game, the serving pair may decide who serves and the receiving pair may decide who receives • The players change ends at the start of the second game • If the match reaches a third game, they change ends both at the start of the game and when the leading pair's score reaches 11 points

  20. Details • The server and receiver must remain within their service courts, without touching the boundary lines, until the server strikes the shuttlecock • The other two players may stand wherever they wish, so long as they do not unsight the opposing server or receiver.

  21. Badminton World Federation (BWF) Men’s Singles World Ranking

  22. 林丹

  23. BWF Women’s Singles World Ranking

  24. 謝杏芳

  25. 林丹 & 謝杏芳

  26. BWF Men’s Doubles World Ranking

  27. 傅海峰+蔡贇

  28. BWF Women’s Doubles World Ranking

  29. 程文欣/簡毓瑾

  30. 楊維/張潔雯

  31. BWF Mixed Doubles World Ranking

  32. 鄭波/高凌

  33. Video Time

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