Influence of elastic properties of tendon structures on jump performance in humans

Keitaro Kubo, Yasuo Kawakami, Tetsuo Fukunaga*

*この研究の対応する著者

研究成果: Article査読

231 被引用数 (Scopus)

抄録

The purpose of this study was to quantify the elastic properties of tendon structures in vivo and to investigate the influence of the tendon properties on jump performance with and without countermovement. Elongation of the tendon and aponeurosis of vastus lateralis muscle (dL) was directly measured by ultrasonography while subjects (n = 31) performed ramp isometric knee extension up to the voluntary maximum (MVC). The relationship between muscle force and dL was fitted to a linear regression above 50% MVC, the slope of which was defined as stiffness of the tendon structures. Statistical analysis revealed no significant difference between duplicated measurements of stiffness, with an interday reliability of r = 0.88 and a coefficient of variance of 6.1%. Although the stiffness was not significantly related to absolute jump height in either vertical jump, it was inversely correlated with the difference in jump height between the vertical jumps performed with and without countermovement. The results suggested that the stiffness of tendon structures has a favorable effect on stretch-shortening cycle exercise, possibly due to adequate storage and recoil of elastic energy.

本文言語English
ページ(範囲)2090-2096
ページ数7
ジャーナルJournal of Applied Physiology
87
6
DOI
出版ステータスPublished - 1999 12月
外部発表はい

ASJC Scopus subject areas

  • 生理学
  • 生理学(医学)

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