A cross-sectional study on the mechanical properties of the Achilles tendon with growth

Yasuyoshi Mogi*, Suguru Torii, Yasuo Kawakami, Toshimasa Yanai

*この研究の対応する著者

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Purpose: This study aimed to elucidate growth pattern of mechanical properties of the Achilles tendon and to examine if imbalance between growth of bone and muscle–tendon unit occurs during adolescence. Methods: Fourteen elementary school boys, 30 junior high school boys, 20 high school boys and 15 male adults participated in this study. Based on estimated age at peak height velocity (PHV), junior high school boys were separated into two groups (before or after PHV). An ultrasonography technique was used to determine the length, cross-sectional area, stiffness and Young’s modulus of Achilles tendon. In addition, the maximum strain in “toe region” (strainTP) was determined to describe the balance between growth of bone and muscle–tendon unit. Results: No group difference was observed in length, cross-sectional area and strainTP among the groups. However, stiffness and Young’s modulus in after PHV groups were significantly higher than those of elementary school boys and before PHV groups (p ≤ 0.05). Conclusions: These results indicate that mechanical properties of Achilles tendon change dramatically at and/or around PHV to increased stiffness. The widely believed assumption that muscle–tendon unit is passively stretched due to rapid bone growth in adolescence is not supported.

本文言語English
ページ(範囲)185-194
ページ数10
ジャーナルEuropean Journal of Applied Physiology
118
1
DOI
出版ステータスPublished - 2018 1 1

ASJC Scopus subject areas

  • 整形外科およびスポーツ医学
  • 公衆衛生学、環境および労働衛生
  • 生理学(医学)

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