Changes in corticospinal excitability during an acute bout of resistance exercise in the elbow flexors
Ruotsalainen, I., Ahtiainen, J., Kidgell, D. J., & Avela, J. (2014). Changes in corticospinal excitability during an acute bout of resistance exercise in the elbow flexors. European Journal of Applied Physiology, 114(7), 1545-1553. https://doi.org/10.1007/s00421-014-2884-z
Published in
European Journal of Applied PhysiologyDate
2014Copyright
© Springer-Verlag Berlin Heidelberg 2014. This is a final draft version of an article whose final and definitive form has been published by Springer. Published in this repository with the kind permission of the publisher.
Purpose
Hypertrophic resistance exercise (HRE) induces central and peripheral fatigue. However, more detailed information about changes in corticospinal excitability remains to be elucidated.
Methods
Eleven volunteers participated in the upper arm HRE which included one repetition maximum (1 RM) control contractions and three sets of 13 RM (SET1–3). Transcranial magnetic stimulation (TMS) was applied during maximal isometric voluntary contraction (MVC) at the end of each set and during control contractions to study changes in corticospinal excitability. Electrical stimulation was used in order to measure peripheral changes.
Results
MVC decreased after each set when compared to control contractions. Motor evoked potential (MEP) were 138.7 ± 52.7 % (p < 0.05), 130.4 ± 44.7 and 113.1 ± 31.4 % after SET1, SET2 and SET3, respectively, when compared to pre-exercise value. A significant reduction in MEP area between SET1 and SET3 (p < 0.05) was observed while silent period (SP) duration increased (~151–165 ms, p < 0.05) simultaneously between these sets. TMS-evoked twitch force during MVC increased significantly following each set when compared to pre-exercise value. Simultaneously, a significant reduction was observed in resting twitch force over the sets.
Conclusions
The results of this study clearly support the existence of both central and peripheral fatigue during HRE of elbow flexors. However, changes in the MEP area and SP suggest that during HRE of the elbow flexors, the corticospinal excitability increases first, until at some point, supraspinal fatigue takes over.
...
Publisher
SpringerISSN Search the Publication Forum
1439-6319Keywords
Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/23748274
Metadata
Show full item recordCollections
- Liikuntatieteiden tiedekunta [3028]
Related items
Showing items with similar title or keywords.
-
Acute neuromuscular responses and recovery after three different resistance exercise loadings in male power and strength athletes
Kotikangas, Johanna (2020)The frequency, volume, intensity and length of rest intervals affect neuromuscular fatigue caused by the resistance exercise. Acute neuromuscular responses and long-term adaptations to different types of resistance exercises ... -
Neural adaptations to resistance training
Deng, Fu-Yu (2023)Ageing-related alterations in neuromuscular system was the main interest in the current study. Muscle strength decrement may be one of the most evident changes. The impairment in strength through aging may lead to functional ... -
Acute neuromuscular and hormonal responses and long-term adaptations to hypertrophic resistance training : with special reference to constant versus variable resistance
Walker, Simon (University of Jyväskylä, 2012) -
Time Course of Neuromuscular Fatigue During Different Resistance Exercise Loadings in Power Athletes, Strength Athletes, and Nonathletes
Kotikangas, Johanna; Walker, Simon; Peltonen, Heikki; Häkkinen, Keijo (Wolters Kluwer, 2024)Training background may affect the progression of fatigue and neuromuscular strategies to compensate for fatigue during resistance exercises. Thus, our aim was to examine how training background affects the time course of ... -
Acute neuromuscular and hormonal responses to 20 versus 40% velocity loss in males and females before and after 8 weeks of velocity-loss resistance training
Walker, Simon; Häkkinen, Keijo; Virtanen, Roosa; Mane, Shashank; Bachero‐Mena, Beatriz; Pareja‐Blanco, Fernando (Wiley, 2022)Scientific examination of velocity-based resistance training (VBRT) has increased recently, but how males and females respond to different VBRT protocols or how these acute responses are modified after a period of training ...