老內說劉翔的身材與長腿跨欄者比過欄相對容易。

老內另外夸劉翔的平跑速度也是恰到好處。

總而言之，劉翔的身體條件和平跑速度都是恰到好處，再加上極好的過欄技術和心理素質，是他稱霸高欄的充分必要條件。

不知滿兄在學校時，記不記得田徑隊的跨欄教練顧老師的身材。就屬於那一類的。

老內的原話是，

1.89m high, weighing 82kg, has "a long body frame but short legs" Therefore it is easier for him to NEGOTIATE his smaller legs over the hurdles,"unlie more leggy man like Arnold and Trammell."All this is done by having extremely glexible hips," conclude Nehemiah.

...But specifically what is tghe key to Liu Xiang's sucess as a hurdler?
"He is technically sound. His basic flat speed is not as good as the other guys which means that he can race the hurdles at his TOP speed without fear of going too fast. ... can just concentrate on his technique, cleaning the hurdles low."

"His opponents are much quicker flat sprinters but that speed is a DISADVANTAGE for them."

The big men have always to adjust their speed b/c they try to go too fast and by mid-race the hurdles start to come too quick on them for them to cope and hurdle cleanly ... they have to make continue adjustments to their speed ... Too much speed killed Arnold, Doucoure adn the rest yesterday."

By contrast, Liu xiang cna use his full velocity in a race, he doesn't have to make any adjustment and so can concetrate on staying low over the barriers." He has learnt to "shuffle perfectly" between the hurdles.

Howver, "add another half a yard in the space between the barriers" and the balance would go back in the favour of the men with faster flat speed. "They would be unstoppable."

(BTW，欄距是30FT， 9米14，起跑欄距是45英尺，13米72，欄高3尺6，1米06)。

另，你那篇5K雄文真是讓人BFBX。我5K一直沒什麼長進。但游泳自從換了新泳褲後成績提高。看來這裝備還是有一定效益的：-)