Tendon properties and muscle architecture for knee extensors and plantar flexors in boys and men

Keitaro Kubo*, Takanori Teshima, Toshihiro Ikebukuro, Norikazu Hirose, Naoya Tsunoda

*この研究の対応する著者

研究成果査読

19 被引用数 (Scopus)

抄録

Background The purpose of this study was to compare the elastic properties and size of tendinous structures and muscle architecture for knee extensors and plantar flexors in boys and men. Methods Twenty-two early pubescent boys (9.6-12.7 yrs) and 23 young adult men (19.8-26.2 yrs) participated in this study. The maximal strain and thickness of tendinous structures for knee extensors and plantar flexors were measured using ultrasonography. In addition, the fascicle lengths of vastus lateralis and medial gastrocnemius muscles were measured. Findings The maximal strain of tendinous structures for plantar flexors was significantly greater in boys than in men, while there was no difference in the maximal strain for knee extensors between the two groups. The relative thickness (to body mass1/3) of Achilles tendon was significantly greater in boys than in men, although there was no difference in that of patellar tendon between the two groups. The relative fascicle length (to limb length) of vastus lateralis muscle was significantly lower in boys than in men, although there was no difference in that of medial gastrocnemius muscle between the two groups. Interpretation These results suggest that the amount of changes in the elastic properties and sizes of tendinous structures and in the fascicle lengths from early pubescence to maturity is different for different muscle groups (in particular, the knee extensors and the plantar flexors).

本文言語English
ページ(範囲)506-511
ページ数6
ジャーナルClinical Biomechanics
29
5
DOI
出版ステータスPublished - 2014 5

ASJC Scopus subject areas

  • 生物理学
  • 整形外科およびスポーツ医学

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