Please use this identifier to cite or link to this item:
http://hdl.handle.net/1893/36893
Appears in Collections: | Faculty of Health Sciences and Sport Journal Articles |
Peer Review Status: | Refereed |
Title: | Prediction of muscle fiber composition using multiple repetition testing |
Author(s): | Hall, Elliott C R Lysenko, Evgeny A Semenova, Ekaterina A Borisov, Oleg V Andryushchenko, Oleg N Andryushchenko, Liliya B Vepkhvadze, Tatiana F Lednev, Egor M Zmijewski, Piotr Popov, Daniil V Generozov, Edward V Ahmetov, Ildus I |
Contact Email: | elliott.hall@stir.ac.uk |
Keywords: | Fiber type Strength training Vastus lateralis Exercise prescription Endurance |
Issue Date: | Feb-2021 |
Date Deposited: | 19-Dec-2024 |
Citation: | Hall ECR, Lysenko EA, Semenova EA, Borisov OV, Andryushchenko ON, Andryushchenko LB, Vepkhvadze TF, Lednev EM, Zmijewski P, Popov DV, Generozov EV & Ahmetov II (2021) Prediction of muscle fiber composition using multiple repetition testing. <i>Biology of Sport</i>, 38 (2), pp. 277-283. https://doi.org/10.5114/biolsport.2021.99705 |
Abstract: | Direct determination of muscle fiber composition is invasive and expensive, with indirect methods also requiring specialist resources and expertise. Performing resistance exercises at 80% 1RM is suggested as a means of indirectly estimating muscle fiber composition, though this hypothesis has never been validated against a direct method. The aim of the study was to investigate the relationship between the number of completed repetitions at 80% 1RM of back squat exercise and muscle fiber composition. Thirty recreationally active participants' (10 females, 20 males) 1RM back squat load was determined, before the number of consecutive repetitions at 80% 1RM was recorded. The relationship between the number of repetitions and the percentage of fast-twitch fibers from vastus lateralis was investigated. The number of completed repetitions ranged from 5 to 15 and was independent of sex, age, 1RM, training frequency, training type, training experience, BMI or muscle fiber cross-sectional area. The percentage of fast-twitch muscle fibers was inversely correlated with the number of repetitions completed (r = –0.38, P = 0.039). Participants achieving 5 to 8 repetitions (n = 10) had significantly more fast-twitch muscle fibers (57.5 ± 9.5 vs 44.4 ± 11.9%, P = 0.013) than those achieving 11–15 repetitions (n = 11). The remaining participants achieved 9 or 10 repetitions (n = 9) and on average had equal proportion of fast- and slow-twitch muscle fibers. In conclusion, the number of completed repetitions at 80% of 1RM is moderately correlated with muscle fiber composition. |
DOI Link: | 10.5114/biolsport.2021.99705 |
Rights: | This is an Open Access article distributed under the terms of the Creative Commons CC BY License (https://creativecommons.org/licenses/by/4.0/). This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the creator. The license allows for commercial use. |
Licence URL(s): | http://creativecommons.org/licenses/by/4.0/ |
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BS_Art_42003-10.pdf | Fulltext - Published Version | 1.66 MB | Adobe PDF | View/Open |
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