Difference in fascicle behaviors between superficial and deep quadriceps muscles during isometric contractions

Ryosuke Ando, Kazunori Nosaka, Takayuki Inami, Aya Tomita, Kohei Watanabe, Anthony J. Blazevich, Hiroshi Akima

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Introduction: In this study we examined changes in fascicle length and pennation of vastus intermedius (VI) and vastus lateralis (VL) from rest to isometric contraction. Methods: Fourteen healthy men performed submaximal (30% and 50% of maximal voluntary contraction; MVC) isometric knee extensions at 60° and 110° knee flexion (0°=full extension). Panoramic images of VL and VI were obtained at rest and during contractions to measure fascicle length and pennation using extended field-of-view ultrasonography, after confirmation that the technique could be used reliably during sustained submaximal isometric contractions. Results: The relative change in fascicle length from rest to 50% MVC was greater in VI than VL at 110° (P

Original languageEnglish
JournalMuscle and Nerve
DOIs
Publication statusAccepted/In press - 2016
Externally publishedYes

Fingerprint

Isometric Contraction
Quadriceps Muscle
Knee
Ultrasonography

Keywords

  • Fascicle length
  • Knee joint angle
  • Pennation
  • Ultrasonography
  • Vastus intermedius
  • Vastus lateralis

ASJC Scopus subject areas

  • Clinical Neurology
  • Cellular and Molecular Neuroscience
  • Physiology (medical)
  • Physiology

Cite this

Ando, R., Nosaka, K., Inami, T., Tomita, A., Watanabe, K., Blazevich, A. J., & Akima, H. (Accepted/In press). Difference in fascicle behaviors between superficial and deep quadriceps muscles during isometric contractions. Muscle and Nerve. https://doi.org/10.1002/mus.24905

Difference in fascicle behaviors between superficial and deep quadriceps muscles during isometric contractions. / Ando, Ryosuke; Nosaka, Kazunori; Inami, Takayuki; Tomita, Aya; Watanabe, Kohei; Blazevich, Anthony J.; Akima, Hiroshi.

In: Muscle and Nerve, 2016.

Research output: Contribution to journalArticle

Ando, Ryosuke ; Nosaka, Kazunori ; Inami, Takayuki ; Tomita, Aya ; Watanabe, Kohei ; Blazevich, Anthony J. ; Akima, Hiroshi. / Difference in fascicle behaviors between superficial and deep quadriceps muscles during isometric contractions. In: Muscle and Nerve. 2016.
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AU - Blazevich, Anthony J.

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