Changes in muscle force-length properties affect the early rise of force in vivo

Anthony J Blazevich, Dale Cannavan, Sara Horne, David R Coleman, Per Aagaard

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Changes in contractile rate of force development (RFD), measured within a short time interval from contraction initiation, were measured after a period of strength training that led to increases in muscle fascicle length but no measurable change in neuromuscular activity. The relationship between training-induced shifts in the moment-angle relation and changes in RFD measured to 30 ms (i.e., early) and 200 ms (i.e., late) from the onset of isometric knee extension force were examined; shifts in the moment-angle relation were used as an overall measure of changes in quadriceps muscle fascicle length. A significant proportion of the variance in RFD measured only in the initial contraction phase (0-30 ms) could be explained by shifts in the moment-angle relation (r=-0.66-0.71; R2=0.44-0.50). Training-induced increases in muscle fascicle length may lead to a reduced or complete lack of adaptive gains in contractile RFD, especially in the early contraction phase.
OriginalsprogEngelsk
TidsskriftMuscle & Nerve
Vol/bind39
Udgave nummer4
Sider (fra-til)512-20
Antal sider8
ISSN0148-639X
DOI
StatusUdgivet - 2009

Fingeraftryk

Muscles
Resistance Training
Quadriceps Muscle
Knee

Citer dette

Blazevich, Anthony J ; Cannavan, Dale ; Horne, Sara ; Coleman, David R ; Aagaard, Per. / Changes in muscle force-length properties affect the early rise of force in vivo. I: Muscle & Nerve. 2009 ; Bind 39, Nr. 4. s. 512-20.
@article{235f91a0780c11de9c46000ea68e967b,
title = "Changes in muscle force-length properties affect the early rise of force in vivo",
abstract = "Changes in contractile rate of force development (RFD), measured within a short time interval from contraction initiation, were measured after a period of strength training that led to increases in muscle fascicle length but no measurable change in neuromuscular activity. The relationship between training-induced shifts in the moment-angle relation and changes in RFD measured to 30 ms (i.e., early) and 200 ms (i.e., late) from the onset of isometric knee extension force were examined; shifts in the moment-angle relation were used as an overall measure of changes in quadriceps muscle fascicle length. A significant proportion of the variance in RFD measured only in the initial contraction phase (0-30 ms) could be explained by shifts in the moment-angle relation (r=-0.66-0.71; R2=0.44-0.50). Training-induced increases in muscle fascicle length may lead to a reduced or complete lack of adaptive gains in contractile RFD, especially in the early contraction phase.",
keywords = "Adaptation, Physiological, Electromyography, Female, Humans, Isometric Contraction, Knee Joint, Male, Models, Biological, Physical Fitness, Quadriceps Muscle",
author = "Blazevich, {Anthony J} and Dale Cannavan and Sara Horne and Coleman, {David R} and Per Aagaard",
year = "2009",
doi = "10.1002/mus.21259",
language = "English",
volume = "39",
pages = "512--20",
journal = "Muscle & Nerve",
issn = "0148-639X",
publisher = "JohnWiley & Sons, Inc.",
number = "4",

}

Changes in muscle force-length properties affect the early rise of force in vivo. / Blazevich, Anthony J; Cannavan, Dale; Horne, Sara; Coleman, David R; Aagaard, Per.

I: Muscle & Nerve, Bind 39, Nr. 4, 2009, s. 512-20.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Changes in muscle force-length properties affect the early rise of force in vivo

AU - Blazevich, Anthony J

AU - Cannavan, Dale

AU - Horne, Sara

AU - Coleman, David R

AU - Aagaard, Per

PY - 2009

Y1 - 2009

N2 - Changes in contractile rate of force development (RFD), measured within a short time interval from contraction initiation, were measured after a period of strength training that led to increases in muscle fascicle length but no measurable change in neuromuscular activity. The relationship between training-induced shifts in the moment-angle relation and changes in RFD measured to 30 ms (i.e., early) and 200 ms (i.e., late) from the onset of isometric knee extension force were examined; shifts in the moment-angle relation were used as an overall measure of changes in quadriceps muscle fascicle length. A significant proportion of the variance in RFD measured only in the initial contraction phase (0-30 ms) could be explained by shifts in the moment-angle relation (r=-0.66-0.71; R2=0.44-0.50). Training-induced increases in muscle fascicle length may lead to a reduced or complete lack of adaptive gains in contractile RFD, especially in the early contraction phase.

AB - Changes in contractile rate of force development (RFD), measured within a short time interval from contraction initiation, were measured after a period of strength training that led to increases in muscle fascicle length but no measurable change in neuromuscular activity. The relationship between training-induced shifts in the moment-angle relation and changes in RFD measured to 30 ms (i.e., early) and 200 ms (i.e., late) from the onset of isometric knee extension force were examined; shifts in the moment-angle relation were used as an overall measure of changes in quadriceps muscle fascicle length. A significant proportion of the variance in RFD measured only in the initial contraction phase (0-30 ms) could be explained by shifts in the moment-angle relation (r=-0.66-0.71; R2=0.44-0.50). Training-induced increases in muscle fascicle length may lead to a reduced or complete lack of adaptive gains in contractile RFD, especially in the early contraction phase.

KW - Adaptation, Physiological

KW - Electromyography

KW - Female

KW - Humans

KW - Isometric Contraction

KW - Knee Joint

KW - Male

KW - Models, Biological

KW - Physical Fitness

KW - Quadriceps Muscle

U2 - 10.1002/mus.21259

DO - 10.1002/mus.21259

M3 - Journal article

C2 - 19296490

VL - 39

SP - 512

EP - 520

JO - Muscle & Nerve

JF - Muscle & Nerve

SN - 0148-639X

IS - 4

ER -