Key result
Three hours of acute hypoxia significantly increased motor corticospinal excitability (P=0.01) and intracortical inhibition (P=0.02) in healthy subjects, without changing voluntary activation.
Why the study?
Does acute hypoxia alter motor corticospinal excitability, intracortical inhibition, and cortical voluntary activation in healthy humans?
Population
14 healthy subjects
Comparison
1-hour and 3-hour hypoxia (Fi = 0.12) vs Normoxia
Design
Other
Follow-up
3 hours
Authors
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Should not yet inform clinical hypoxia management; leaves open duration-dependent cortical effects for targeted patient studies.
Does acute hypoxia alter motor corticospinal excitability, intracortical inhibition, and cortical voluntary activation in healthy humans?
p-value: p=0.01
Acute hypoxia for 3 hours, but not 1 hour, increases motor corticospinal excitability and intracortical inhibition in healthy humans without changing voluntary activation.
Rupp et al. (2012) studied Healthy (n=14). Acute hypoxia vs. Normoxia was evaluated on Motor corticospinal excitability (MEPs) and intracortical inhibition (CSP) (p=0.01). Three hours of acute hypoxia significantly increased motor corticospinal excitability (P=0.01) and intracortical inhibition (P=0.02) in healthy subjects, without changing voluntary activation.
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