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发帖数: 19210 | 1 【 以下文字转载自 Swimming 讨论区 】
发信人: ironman2015 (IMMT 2013), 信区: Swimming
标 题: The High-Elbow Pull Of The Freestyle Stroke
发信站: BBS 未名空间站 (Sat Aug 31 08:29:17 2013, 美东)
The High-Elbow Pull Of The Freestyle Stroke
http://triathlon.competitor.com/2013/04/training/swim-speed-ser
Is The High-Elbow Pull Best For The Freestyle Swim Stroke?
http://triathlon.competitor.com/2013/07/training/is-the-high-el
The Race Club's Secret Tip – How to Pull Underwater Drills
今天读文章所学到的是EVF可以避免上臂在水里产生的阻力。
“During a high-elbow pull, a swimmer’s hand will enter and leave the water
at nearly the exact same point during a single stroke cycle. In other words
, the net distance his or her hand traveled underwater was zero. Since the
hand doesn’t move forward through the water, it does not contribute
appreciably to frontal drag.”
“Even though the deep pull may produce more power, it also creates more
frontal drag throughout nearly the entire pulling motion. The culprit is
really the upper arm, which is moving forward during most of the underwater
pull and will cause more frontal drag in the deeper position than it will
with the higher elbow. This is a worthwhile tradeoff for a sprinter, but not
for a long-distance swimmer, especially when a bike and run follows.” |
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