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TA的每日心情 | 開心 2014-4-1 05:23 |
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簽到天數: 77 天 [LV.6]常住居民II
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睇書, 見到個 Running的定義,
睇完, 大定係咪對Running了解深入咗?
The demarcation between walking and running occurs when periods of double support during the stance phase of the gait cycle (both feet are simultaneously in contact with the ground) give way to two periods of double float at the beginning and the end of the swing phase of gait (neither foot is touching the ground). Generally as speed increases further, initial contact changes from being on the hindfoot to the forefoot.
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