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体操全日本団体選手権2017
日本体育大学 白井健三選手
跳馬 D:5.6 E:9.350 Score:14.950 pic.twitter.com/t3zgkpwvTY— まめ (@kfmr1129) November 26, 2017
how high is Kenzo’s triple twisting Yurchenko?
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Gymnastics Coaching.com 
You should actually use the centre of gravity to measure the height as the head height will vary for tuck and pike positions.
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Good point.
I assume they were only using video in this example. That they had no way to accurately calculate CofG.
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