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

Authors/Creators

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

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

RAS ID

20624

Document Type

Journal Article

Date of Publication

2016

School

School of Exercise and Health Sciences

Copyright

subscription content

Publisher

Wiley

Comments

Ando, R., Nosaka, K., Inami, T., Tomita, A., Watanabe, K., Blazevich, A. J. & Akima, H. (2016), Difference in fascicle behaviors between superficial and deep quadriceps muscles during isometric contractions. Muscle & Nerve, 53(5), 797–802. Available here

Recommended Citation

Ando,, R., Nosaka, K., Inami, T., Tomita, A., Watanabe, K., Blazevich, A. J., & Akima, H. (2016). Difference in fascicle behaviors between superficial and deep quadriceps muscles during isometric contractions. DOI: https://doi.org/10.1002/mus.24905