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

doi:10.1002/mus.24905

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 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 language	English
Journal	Muscle and Nerve
DOIs	https://doi.org/10.1002/mus.24905
Publication status	Accepted/In press - 2016
Externally published	Yes

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

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10.1002/mus.24905

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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",

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T1 - Difference in fascicle behaviors between superficial and deep quadriceps muscles during isometric contractions

AU - Ando, Ryosuke

AU - Nosaka, Kazunori

AU - Inami, Takayuki

AU - Tomita, Aya

AU - Watanabe, Kohei

AU - Blazevich, Anthony J.

AU - Akima, Hiroshi

PY - 2016

Y1 - 2016

N2 - 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

AB - 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

KW - Fascicle length

KW - Knee joint angle

KW - Pennation

KW - Ultrasonography

KW - Vastus intermedius

KW - Vastus lateralis

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

Abstract

Keywords

ASJC Scopus subject areas

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