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Erschienen in: European Journal of Applied Physiology 6/2009

01.12.2009 | Original Article

Neural adaptations underlying cross-education after unilateral strength training

verfasst von: Marius S. Fimland, Jan Helgerud, Gerd Marie Solstad, Vegard Moe Iversen, Gunnar Leivseth, Jan Hoff

Erschienen in: European Journal of Applied Physiology | Ausgabe 6/2009

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Abstract

The purpose of this study was to investigate the effects of 4-week (16 sessions) unilateral, maximal isometric strength training on contralateral neural adaptations. Subjects were randomised to a strength training group (TG, n = 15) or to a control group (CG, n = 11). Both legs of both groups were tested for plantar flexion maximum voluntary isometric contractions (MVCs), surface electromyogram (EMG), H-reflexes and V-waves in the soleus (SOL) and gastrocnemius medialis (GM) superimposed during MVC and normalised by the M-wave (EMG/MSUP, HSUP/MSUP, V/MSUP, respectively), before and after the training period. For the untrained leg, the TG increased compared to the CG for MVC torque (33%, P < 0.01), SOL EMG/MSUP (32%, P < 0.05) and SOL V/MSUP (24%, P < 0.05). For the trained leg, the TG increased compared to the CG for MVC torque (40%, P < 0.01), EMG/MSUP (SOL: 38%, P < 0.05; GM: 60%, P < 0.05) and SOL V/MSUP (72%, P < 0.01). HSUP/MSUP remained unchanged for both limbs. No changes occurred in the CG. These results reinforce the concept that enhanced neural drive to the contralateral agonist muscles contributes to cross-education of strength.
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Metadaten
Titel
Neural adaptations underlying cross-education after unilateral strength training
verfasst von
Marius S. Fimland
Jan Helgerud
Gerd Marie Solstad
Vegard Moe Iversen
Gunnar Leivseth
Jan Hoff
Publikationsdatum
01.12.2009
Verlag
Springer-Verlag
Erschienen in
European Journal of Applied Physiology / Ausgabe 6/2009
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-009-1190-7

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