ArticleEuropean journal of applied physiology2022
Effects of acute intermittent hypoxia on corticospinal excitability within the primary motor cortex.
Article in European journal of applied physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 11 citations in OpenAlex.
- Maximal strength and voluntary activation of adductor pollicis after a single session of acute intermittent hypercapnia or acute intermittent hypoxia.Experimental physiology · 2026Article
- Combining exercise and hypoxia for brain health: from elite athlete altitude training camps to clinical applications.AIMS neuroscience · 2026Review
- Intermittent hypoxia-induced enhancements in corticospinal excitability predict gains in motor learning and metabolic efficiency.Scientific reports · 2025Article
- Intermittent hypoxia enhances voluntary activation and reduces performance fatigability during repeated lower limb contractions.Journal of neurophysiology · 2024Article
- Acute intermittent hypoxia: Enhancing motoneuronal output or not?Experimental physiology · 2024Article
- Intermittent Hypoxia-Induced Enhancements in Corticospinal Excitability Predict Gains in Motor Learning and Metabolic Efficiency.Research square · 2024Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
purposeAcute intermittent hypoxia (AIH) is a safe and non-invasive treatment approach that uses brief, repetitive periods of breathing reduced oxygen air alternated with normoxia. While AIH is known to affect spinal circuit excitability, the effects of AIH on cortical excitability remain largely unknown. We investigated the effects of AIH on cortical excitability within the primary motor cortex.
methodsEleven healthy, right-handed participants completed two testing sessions: (1) AIH (comprising 3 min in hypoxia [fraction of inspired oxygen ~ 10%] and 2 min in normoxia repeated over five cycles) and (2) normoxia (NOR) (equivalent duration to AIH). Single- and paired-pulse transcranial magnetic stimulations were delivered to the primary motor cortex, before and 0, 25, and 50 min after AIH and normoxia.
resultsThe mean nadir in arterial oxygen saturation was lower (p < 0.001) during the cycles of AIH (82.5 ± 4.9%) than NOR (97.8 ± 0.6%). There was no significant difference in corticospinal excitability, intracortical facilitation, or intracortical inhibition between AIH and normoxia conditions at any time point (all p > 0.05). There was no association between arterial oxygen saturation and changes in corticospinal excitability after AIH (r = 0.05, p = 0.87).
conclusionOverall, AIH did not modify either corticospinal excitability or excitability of intracortical facilitatory and inhibitory circuits within the primary motor cortex. Future research should explore whether a more severe or individualised AIH dose would induce consistent, measurable changes in corticospinal excitability.
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