The influence of a single bout of aerobic exercise on short-interval intracortical excitability

Smith, Ashleigh E.; Goldsworthy, Mitchell R.; Garside, Tessa; Wood, Fiona; Ridding, Michael C.

doi:10.1007/s00221-014-3879-z

Cited by 125 publications

(188 citation statements)

References 34 publications

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“…In contrast to the effects of high-intensity exercise, no change on corticospinal excitability was found after low -and moderate-intensity exercise in our study. Similar findings have been demonstrated by previous studies [27][28] . It is likely that nonfatiguing dynamic exercises of low and moderate intensity are unable to influence non-exercised muscles cortical area.…”

supporting

confidence: 93%

Intensity-dependent effects of cycling exercise on corticospinal excitability in healthy humans: a pilot study

Suruagy

Baltar

Gomes

et al. 2017

Motriz: rev. educ. fis.

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-Aims: the aim of this study was to verify the effects of different intensities of locomotor exercise on corticospinal excitability. Methods: 18 healthy subjects (27.6 ± 6.5 years,) participated in a design study of three different exercise protocols on a cycle ergometer: (i) 10 min at 75% Wmax (high intensity); (ii) 15min at 60% Wmax (moderate intensity) or (iii) 30 min at 45% Wmax (low intensity). The protocols of lower body cycling were assigned in random order in separate sessions. A control session was done with subjects at rest. Corticospinal excitability was assessed before (baseline) and every 5 min for 15min after the end of exercise/rest (time: 0, 5, 10 and 15) by measurement of the motor evoked potential (MEP) elicited by transcranial magnetic stimulation in the relaxed first-dorsal interosseus muscle. Results: Compared to the resting session, a significant decrease (64%) in the motor evoked potential amplitudes was found only in the session of exercise of high intensity. This result seems depend on the level of physical activity of subject. No change was found after rest, low and moderate exercises. Conclusions: These findings suggest that changes in the corticospinal excitability depend on exercise intensity and level of physical activity of subjects.

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supporting

confidence: 93%

Intensity-dependent effects of cycling exercise on corticospinal excitability in healthy humans: a pilot study

Suruagy

Baltar

Gomes

et al. 2017

Motriz: rev. educ. fis.

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“…Also, M1 has shown to exhibit higher levels of activation during exercise (Christensen et al, 2000), and it is possible that this activation may help prime subsequent movements. An acute bout of lower extremity cycling exercise (20–30 min) at moderate and high intensity has been reported to reduce SICI in the M1 that lasts for up to 30 min after exercise (Singh, Duncan, Neva, & Staines, 2014; Smith, Goldsworthy, Garside, Wood, & Ridding, 2014). It is important to note that, in both these studies, the global effect of exercise was studied by examining M1 excitability of an unexercised upper limb muscle.…”

Section: Aerobic Exercise As Primingmentioning

confidence: 99%

Movement-Based Priming: Clinical Applications and Neural Mechanisms

Stoykov

Corcos

Madhavan

2017

Journal of Motor Behavior

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Priming can be described as behavior change generated by preceding stimuli. Although various types of priming have been long studied in the field of psychology, priming that targets motor cortex is a relatively new topic of research in the fields of motor control and rehabilitation. In reference to a rehabilitation intervention, priming is categorized as a restorative approach. There are a myriad of possible priming approaches including non-invasive brain stimulation, motor imagery, and sensory-based priming, to name a few. The authors report on movement-based priming which, compared to other priming types, is less frequently examined and under reported. Movement-based priming includes, but is not limited to, bilateral motor priming, unilateral priming, and aerobic exercise. Clinical and neural mechanistic aspects of movement-based priming techniques are explored.

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“…For example, intracortical facilitation (ICF) increases [15] while short-interval intracortical inhibition (SICI) decreases [15, 16] or does not change [17] following a single session of exercise. ICF is thought to reflect N-methyl D -aspartate (NMDA) receptors [18], while SICI is mediated via GABA A receptor activity [19, 20].…”

Section: Introductionmentioning

confidence: 99%

Physical activity levels determine exercise-induced changes in brain excitability

et al. 2017

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Emerging evidence suggests that regular physical activity can impact cortical function and facilitate plasticity. In the present study, we examined how physical activity levels influence corticospinal excitability and intracortical circuitry in motor cortex following a single session of moderate intensity aerobic exercise. We aimed to determine whether exercise-induced short-term plasticity differed between high versus low physically active individuals. Participants included twenty-eight young, healthy adults divided into two equal groups based on physical activity level determined by the International Physical Activity Questionnaire: low-to-moderate (LOW) and high (HIGH) physical activity. Transcranial magnetic stimulation was used to assess motor cortex excitability via motor evoked potential (MEP) recruitment curves for the first dorsal interosseous (FDI) muscle at rest (MEPREST) and during tonic contraction (MEPACTIVE), short-interval intracortical inhibition (SICI) and facilitation (SICF), and intracortical facilitation (ICF). All dependent measures were obtained in the resting FDI muscle, with the exception of AMT and MEPACTIVE recruitment curves that were obtained during tonic FDI contraction. Dependent measures were acquired before and following moderate intensity aerobic exercise (20 mins, ~60% of the age-predicted maximal heart rate) performed on a recumbent cycle ergometer. Results indicate that MEPREST recruitment curve amplitudes and area under the recruitment curve (AURC) were increased following exercise in the HIGH group only (p = 0.002 and p = 0.044, respectively). SICI and ICF were reduced following exercise irrespective of physical activity level (p = 0.007 and p = 0.04, respectively). MEPACTIVE recruitment curves and SICF were unaltered by exercise. These findings indicate that the propensity for exercise-induced plasticity is different in high versus low physically active individuals. Additionally, these data highlight that a single session of aerobic exercise can transiently reduce inhibition in the motor cortex regardless of physical activity level, potentially priming the system for plasticity induction.

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The influence of a single bout of aerobic exercise on short-interval intracortical excitability

Cited by 125 publications

References 34 publications

Intensity-dependent effects of cycling exercise on corticospinal excitability in healthy humans: a pilot study

Intensity-dependent effects of cycling exercise on corticospinal excitability in healthy humans: a pilot study

Movement-Based Priming: Clinical Applications and Neural Mechanisms

Physical activity levels determine exercise-induced changes in brain excitability

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