Development of a System to Measure Radius of Curvature and Speed of Hammer Head during Turns in Hammer Throw

doi:10.5432/ijshs.3.116

35 0 0 0 OA Development of a System to Measure Radius of Curvature and Speed of Hammer Head during Turns in Hammer Throw

著者: Koji MUROFUSHI Shinji Sakurai Koji Umegaki Kazutoshi Kobayashi
出版者: Japan Society of Physical Education, Health and Sport Sciences
雑誌: International Journal of Sport and Health Science (ISSN:13481509)
巻号頁・発行日: vol.3, pp.116-128, 2005 (Released:2008-01-23)
参考文献数: 18
被引用文献数: 13 17

The aim of this study was to compare the radius of curvature and the estimated head speed as measured by sensors attached to a hammer with those calculated by video image analysis. The participant was the Japanese record holder(83m47). He threw a hammer with sensors which measured the force exerted along the length of the hammer cable using a tension meter made of a metal plate to which strain gauges were affixed, and the angular velocity perpendicular to the hammer cable using two IC accelerometers whose axes were aligned together with the hammer cable. The radius and speed obtained using the sensors were similar to those obtained from video analysis in values, but were slightly out of phase. This is because measuring the angular velocity by sensors eliminates translational motion and only produces results for rotational motion. The length of time required to obtain these results was shortened by the use of a hammer with sensors. Therefore, the system using sensors attached to a hammer will enable athletes and coaches to interpret the data about each throw while it is still fresh in their minds.

2023-06-23 03:29:46
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[weightedmovingaverage][movingavarage] Development of a System to Measure Radius of Curvature and Speed of Hammer Head during Turns in Hammer Throw

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室伏広治の過去の論文だと、実験の章で唐突に「被験者は83m47の日本記録保持者で身長187cm97kg…」と始まる時の、「どう考えてもお前のことやんけ」感大好き https://t.co/bUflKz3C2U https://t.co/jpANkkomOt

1 @JeSuisYasu

あった "The participant was the Japanese record holder(83m47). "のパワーワード(物理)よ https://t.co/Xk5LpBuShq

東京医科歯科大の室伏広治教授の昔の論文、実験の被験者の説明が”Subject was the present Japanese record holder”で強すぎる https://t.co/yosCHutQyh

1 @oni_chan023

1 @Gotarou11

ハンマー投の聴覚バイオフィードバック・システム http://t.co/ZI4YDVBf 室伏選手の聴覚フィードバックトレーニング動画初めて見た。思ったより機械的な音だ。　論文pdf　→　https://t.co/ubLKQWaX　

1 @jh1113

「The participant was the Japanese record holder」ってのが格好いい。もちろん実際は「The author was ...」ですけど(笑)。RT @wintermelon 室伏選手の論文とな https://t.co/TTV3AXvk

オフィシャルサイトでも少し紹介されてますね。エライ。ところで共著者の所属（舞鶴高専）の綴りが・・(笑)。この先生，精力的に活動されてます→http://t.co/DzOLviOL RT @wintermelon 室伏選手の論文とな https://t.co/TTV3AXvk

室伏広司の博士論文、写真付きだしｗｗｗ https://t.co/gvxgoz8k

室伏選手の論文とな https://t.co/MtxoB8XZ

1 @nagataniyoshiki

室伏の論文！　https://t.co/f095r4Og

室伏広治の論文、共著に舞鶴高専の先生がいて、ちょっと親近感ｗ http://t.co/ERXzuYXX

室伏やるじゃん… RT @ShinichirohM: 室伏広治のD論http://t.co/80TIm7i

http://t.co/JzZZXRY すげーな室伏

室伏のハンマー投げに関する研究論文（英語）→http://t.co/ZdCzdoh 張力、角速度などを測る装置を作って測定。投擲前、くるくる回転するごとに周期的にハンマーの張力、速度が増加している。