Acute changes in muscle thickness and pennation angle in response to work-matched concentric and eccentric isokinetic exercise
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11510%2F18%3A10381217" target="_blank" >RIV/00216208:11510/18:10381217 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1139/apnm-2018-0055" target="_blank" >https://doi.org/10.1139/apnm-2018-0055</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1139/apnm-2018-0055" target="_blank" >10.1139/apnm-2018-0055</a>
Alternative languages
Result language
angličtina
Original language name
Acute changes in muscle thickness and pennation angle in response to work-matched concentric and eccentric isokinetic exercise
Original language description
Acute changes in muscle architecture influenced by muscle swelling might be associated with chronic adaptations to resistance exercise, including skeletal muscle growth. Concentric (CON) and eccentric (ECC) muscle actions both play a role in hypertrophic processes, but the influence of each on acute indices of muscle swelling (i.e., muscle thickness (MT) and pennation angle (PA)) remains relatively unknown. Therefore, this study compared the acute changes in MT and PA in response to work-matched CON versus ECC isokinetic exercise. Twelve university-aged students performed 2 bouts of maximal isokinetic knee extensions at 120 degrees.s(-1) on the same day: 50 CON followed by a work-matched ECC bout (similar to 5000 J; 28 +/- 5 reps) with the contralateral limb. Ultrasound images were captured from the middle and distal sites of the vastus lateralis before and immediately after each exercise bout. From these images, MT and PA were measured. Middle and distal MT (11% and 14%, respectively; p < 0.001) and middle PA (39%, p < 0.001) increased only after CON. In addition, changes in MT were strongly related to the amount of total work performed (r = 0.76) during CON. Our results suggest that when the workload is matched between CON and ECC muscle actions performed at a moderate velocity, CON actions seem to be a more potent stimulus for inducing acute changes in MT and PA.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
30306 - Sport and fitness sciences
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Physiology, Nutrition and Metabolism
ISSN
1715-5312
e-ISSN
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Volume of the periodical
43
Issue of the periodical within the volume
10
Country of publishing house
CA - CANADA
Number of pages
6
Pages from-to
1069-1074
UT code for WoS article
000446419800012
EID of the result in the Scopus database
2-s2.0-85054347918