Cross-education of wrist extensor strength is not influenced by non-dominant training in right-handers

Timothy Coombs, Ashlyn Frazer, Deanna Horvath, Alan Pearce, Glyn Howatson, Dawson Kidgell

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27 Citations (Scopus)
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Abstract

Purpose Cross-education of strength has been proposed to be greater when completed by the dominant limb in right handed humans. We investigated whether the direction of cross-education of strength and corticospinal plasticity are different following right or left limb strength training in right-handed participants. Methods Changes in strength, muscle thickness and indices of corticospinal plasticity were analyzed in 23 adults who were exposed to 3-weeks of either right-hand strength training (RHT) or left-hand strength training (LHT). Results Maximum voluntary wrist extensor strength in both the trained and untrained limb increased, irrespective of which limb was trained, with TMS revealing reduced corticospinal inhibition. Conclusions Cross-education of strength was not limited by which limb was trained and reduced corticospinal inhibition was not just confined to the trained limb. Critically, from a behavioral perspective, the magnitude of cross-education was not limited by which limb was trained.
Original languageEnglish
Pages (from-to)1757-1769
JournalEuropean Journal of Applied Physiology
Volume116
Issue number9
Early online date16 Jul 2016
DOIs
Publication statusPublished - Sep 2016

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