Motor cortical excitability is differentially modulated by HIIT and strength exercise.
High-intensity interval training (HIIT) and strength exercise (SE) induce corticospinal plasticity in exercised and non-exercised muscles. While HIIT's systemic neuromodulatory effects are well-established, SE's comparable remote responses remain unclear. This study investigated changes in corticosp...
| Publicado en: | Journal of Sports Sciences Vol. 44; no. 15; pp. 1949 - 1964 |
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| Autores principales: | , , , , , , , |
| Formato: | research tables/charts randomized controlled trial Journal Article |
| Publicado: |
Taylor & Francis Ltd
Aug2026
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=196085513&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 196085513 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 02640414 5BV jtl: Journal of Sports Sciences issn: 02640414 maglogo: Y pubinfo: dt: Aug2026 vid: 44 iid: 15 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 196085513 195539748 196085513 196085513 10.1080/02640414.2026.2705072 196085513 ppf: 1949 ppct: 15 formats: tig: atl: Motor cortical excitability is differentially modulated by HIIT and strength exercise. aug: au: Rostami, Mohamad Lee, Annemarie Frazer, Ashlyn K. Akalu, Yonas Siddique, Ummatul Walker, Simon Tallent, Jamie Kidgell, Dawson J. affil: Monash Exercise Neuroplasticity Research Unit, Department of Physiotherapy, School of Primary and Allied Health Care, Faculty of Medicine, Nursing and Health Science, Monash University, Melbourne, Australia sug: subj: High-Intensity Interval Training Cycling Resistance Training Plantarflexion Training Effect (Physiology) Motor Neurons Physiology Spinal Cord Physiology Neuronal Plasticity Evaluation Muscle, Skeletal Forearm Human Victoria Funding Source Adult Male Female Randomized Controlled Trials Random Assignment Crossover Design Transcranial Magnetic Stimulation Peripheral Nerves Electric Stimulation Reaction Time Task Performance and Analysis Evoked Potentials, Motor Questionnaires Neurophysiology Adult: 19-44 years Male Female ab: High-intensity interval training (HIIT) and strength exercise (SE) induce corticospinal plasticity in exercised and non-exercised muscles. While HIIT's systemic neuromodulatory effects are well-established, SE's comparable remote responses remain unclear. This study investigated changes in corticospinal, intracortical, and spinal excitability, as well as motor performance, in non-exercised flexor carpi radialis following single-session HIIT and plantar flexion SE. Using a randomised crossover design, eighteen participants completed: (1) 20-minute high-intensity interval cycling, (2) high-intensity resistive plantar flexion, and (3) control. Corticospinal responses were assessed using transcranial magnetic stimulation and peripheral nerve stimulation; motor performance through reaction time tasks and maximum voluntary force at baseline and post-exercise. Only HIIT significantly increased motor-evoked potential amplitude (p = 0.002) and reduced short-interval intracortical inhibition (p = 0.04). HIIT reduced silent period duration compared to baseline and control (p <0.001), while SE showed reduction only versus control (p <0.001). Both HIIT and SE improved reaction time compared to baseline and control (p <0.05). These findings highlight differential corticospinal responses in a remote, non-exercised muscle, with HIIT inducing distributed excitability enhancements compared to SE. Unilateral, small-muscle SE may be insufficient to induce widespread corticospinal excitability changes, with implications for neurorehabilitation strategies targeting remote muscle groups. pubtype: Academic Journal doctype: research tables/charts randomized controlled trial Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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