Decomposition of tensiomyogram and comparison with torque twitch responses after post-activation potentiation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14510%2F22%3A00134810" target="_blank" >RIV/00216224:14510/22:00134810 - isvavai.cz</a>
Result on the web
<a href="https://pubmed.ncbi.nlm.nih.gov/36046987/" target="_blank" >https://pubmed.ncbi.nlm.nih.gov/36046987/</a>
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Decomposition of tensiomyogram and comparison with torque twitch responses after post-activation potentiation
Original language description
Objectives: This study evaluates the effect of post-activation potentiation (PAP) after 5x5s maximal voluntary isometric contractions (activation stimulus, AS) on tensiomyography (TMG) and torque twitch contractile parameters of vastus lateralis (VL) and medialis (VM), respectively. Further, we validated the decomposition of TMG response to separate responses of three fiber types. Methods: 15 healthy individuals participated in this study (40% women; age 19 & PLUSMN;2.3 years). A decomposition of VL TMG response was done after optimal fitting of three exponential curves. Results: We found main effects in contraction time (Tc) for muscle, method and time. Furthermore, we found interactions between muscle*method, method*time and muscle*method*time. Compared to PRE AS, we found shorter TMG Tc in VL and VM during the first two minutes after AS. Torque Tc remained unchanged in VL, while it increased in VM within 30 seconds after AS. A decomposition of VL TMG response confirmed PAP effects being present only in decomposed type IIb muscle fibers. Conclusion: The TMG is a sensitive method to detect PAP effects with a sensor mounted directly above the muscle belly. After the decomposition of the TMG signal to three separate muscle fiber phenotypes, we provided a non-invasive insight in the contribution of each muscle fiber phenotype to the PAP of the whole muscle.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
30306 - Sport and fitness sciences
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF MUSCULOSKELETAL & NEURONAL INTERACTIONS
ISSN
1108-7161
e-ISSN
—
Volume of the periodical
22
Issue of the periodical within the volume
3
Country of publishing house
GR - GREECE
Number of pages
10
Pages from-to
316-325
UT code for WoS article
000861384500003
EID of the result in the Scopus database
2-s2.0-85137071718