Local architecture of the vastus intermedius is a better predictor of knee extension force than that of the other quadriceps femoris muscle heads

Ryosuke Ando, Akira Saito, Yoshihisa Umemura, Hiroshi Akima

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The purpose of this study was to determine whether the muscle architecture of each head of the quadriceps femoris (QF) at multiple regions can be used to predict knee extension force. Muscle thickness and pennation angle were measured using sonographic images from multiple regions on each muscle of the QF with the knee flexed to 90°. The fascicle lengths of the rectus femoris (RF), vastus lateralis (VL) and vastus intermedius (VI) muscles were estimated based on sonographic images taken along the length of the thigh. The muscle architecture of the vastus intermedius was determined in two separate locations using sonographic images of the anterior (ant-VI) and lateral portions (lat-VI). The maximal voluntary contraction (MVC) was measured during isometric knee extension at a knee joint angle of 90°. The relationship between MVC force and muscle architecture was examined using a stepwise linear regression analysis with MVC force as the dependent variable. The muscle thickness of the ant-VI was selected as an independent variable in the first step of the linear regression analysis (R2 = 0·66, P2 = 0·91, P

Original languageEnglish
Pages (from-to)376-382
Number of pages7
JournalClinical Physiology and Functional Imaging
Volume35
Issue number5
DOIs
Publication statusPublished - 2015 Sep 1
Externally publishedYes

Keywords

  • Fascicle length
  • Knee extensor strength
  • Muscle thickness
  • Pennation angle
  • Quadriceps femoris
  • Ultrasonography

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)

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