Key result
Acute hypoxia did not systematically alter heart rate-work rate relationships, and the heart rate deflection point failed to accurately predict the anaerobic threshold in both normoxic and hypoxic conditions.
Why the study?
Does the heart rate deflection point accurately predict the anaerobic threshold under acute hypoxia in untrained males?
Population
8 untrained males
Comparison
Incremental exercise test breathing 12% O2 vs Incremental exercise test breathing room air
Design
Other
Authors
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HRDP should not estimate anaerobic threshold in normoxia or hypoxia; leaves open whether alternative HR metrics improve hypoxic exercise testing.
Does the heart rate deflection point accurately predict the anaerobic threshold under acute hypoxia in untrained males?
The heart rate deflection point is not an accurate predictor of the anaerobic threshold, and acute hypoxia does not systematically affect the heart rate-work rate relationship.
Özçelik et al. (2004) studied Healthy untrained males (n=8). Acute hypoxia vs. Room air (normoxia) was evaluated on Concordance between heart rate deflection point and anaerobic threshold. Acute hypoxia did not systematically alter heart rate-work rate relationships, and the heart rate deflection point failed to accurately predict the anaerobic threshold in both normoxic and hypoxic conditions.
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