Corticospinal and intracortical responses from both motor cortices following unilateral concentric versus eccentric contractions

Onno Groen; Christopher Latella; Kazunori NosakaDylan EdwardsWei‐Peng TeoJanet L. Taylor

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Corticospinal and intracortical responses from both motor cortices following unilateral concentric versus eccentric contractions

机译：Corticospinal and intracortical responses from both motor cortices following unilateral concentric versus eccentric contractions

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Abstract Cross‐education is the phenomenon where training of one limb can cause neuromuscular adaptations in the opposite untrained limb. This effect has been reported to be greater after eccentric (ECC) than concentric (CON) strength training; however, the underpinning neurophysiological mechanisms remain unclear. Thus, we compared responses to transcranial magnetic stimulation (TMS) in both motor cortices following single sessions of unilateral ECC and CON exercise of the elbow flexors. Fourteen healthy adults performed three sets of 10 ECC and CON right elbow flexor contractions at 75 of respective maximum on separate days. Elbow flexor maximal voluntary isometric contraction (MVIC) torques were measured before and after exercise, and responses to single‐ and paired‐pulse TMS were recorded from the non‐exercised left and exercised right biceps brachii. Pre‐exercise and post‐exercise responses for ECC and CON were compared by repeated measures analyses of variance (ANOVAs). MVIC torque of the exercised arm decreased (p?

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《The European journal of neuroscience.》 |2023年第4期|619-632|共14页
作者
Onno Groen; Christopher Latella; Kazunori NosakaDylan EdwardsWei‐Peng TeoJanet L. Taylor;
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作者单位

Neurorehabilitation and Robotics Laboratory, School of Medical and Health Sciences,Edith Cowan;

School of Medical and Health Sciences, Centre for Human Performance,Edith Cowan University;

Exercise Medicine Research Institute, School of Medical and Health Sciences,Edith Cowan UniversityPhysical Education and Sports Science Academic Group, National Institute of Education,Nanyang;

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正文语种英语
中图分类神经病学与精神病学;
关键词
cross‐education; intracortical facilitation; resting motor threshold; short interval intracortical inhibition; strength training;

Corticospinal and intracortical responses from both motor cortices following unilateral concentric versus eccentric contractions

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