Why the study?
Does acute hypoxia alter heart rate variability at rest and during exercise in healthy subjects?
Population
12 healthy subjects
Comparison
Acute hypoxia during a standardized hypoxic… vs Normoxic conditions during the same test
Design
Other
Authors
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HRV changes in healthy subjects should not alter clinical hypoxia protocols; leaves open relevance to patients or adverse event prediction.
Does acute hypoxia alter heart rate variability at rest and during exercise in healthy subjects?
Acute hypoxia causes vagal withdrawal at rest, but during moderate exercise, the dominant effect of exercise obscures further HRV changes from hypoxia.
Buchheit et al. (2004) studied this question.
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