論文

査読有り
2019年7月

Comprehensive mechanical power analysis in sprint running acceleration

SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
  • Gaspare Pavei
  • ,
  • Paola Zamparo
  • ,
  • Norihisa Fujii
  • ,
  • Takuya Otsu
  • ,
  • Naoki Numazu
  • ,
  • Alberto E. Minetti
  • ,
  • Andrea Monte

29
12
開始ページ
1892
終了ページ
1900
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1111/sms.13520
出版者・発行元
WILEY

Sprint running is a common feature of many sport activities. The ability of an athlete to cover a distance in the shortest time relies on his/her power production. The aim of this study was to provide an exhaustive description of the mechanical determinants of power output in sprint running acceleration and to check whether a predictive equation for internal power designed for steady locomotion is applicable to sprint running acceleration. Eighteen subjects performed two 20 m sprints in a gym. A 35-camera motion capture system recorded the 3D motion of the body segments and the body center of mass (BCoM) trajectory was computed. The mechanical power to accelerate and rise BCoM (external power, P-ext) and to accelerate the segments with respect to BCoM (internal power, P-int) was calculated. In a 20 m sprint, the power to accelerate the body forward accounts for 50% of total power; P-int accounts for 41% and the power to rise BCoM accounts for 9% of total power. All the components of total mechanical power increase linearly with mean sprint velocity. A published equation for P-int prediction in steady locomotion has been adapted (the compound factor q accounting for the limbs' inertia decreases as a function of the distance within the sprint, differently from steady locomotion) and is still able to predict experimental P-int in a 20 m sprint with a bias of 0.70 +/- 0.93 W kg(-1). This equation can be used to include P-int also in other methods that estimate external horizontal power only.

Web of Science ® 被引用回数 : 4

リンク情報
DOI
https://doi.org/10.1111/sms.13520
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000481719300001&DestApp=WOS_CPL

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