Key result
Exposure to extreme altitude during a Mt. Everest expedition decreased maximal heart rates from 186 beats/min at sea level to 155 beats/min at 5,400 m and 142-144 beats/min at 8,750 m.
Why the study?
Does extreme altitude exposure reduce maximal heart rate in healthy climbers?
Population
5 healthy climbers
Comparison
Exposure to extreme altitude vs Sea level
Design
Case_series
Follow-up
6 weeks
Authors
Loading...
Extreme altitude may lower maximal heart rate in climbers; single case leaves generalizability and chamber comparisons open.
Observational (n=5)
Does extreme altitude exposure reduce maximal heart rate in healthy climbers?
Absolute Event Rate: 155% vs 186%
Maximal heart rate decreases significantly with acclimatization to extreme altitude, though field values at 8,750 m remain higher than those reported in hypobaric chamber studies.
Lundby et al. (2001) conducted an observational in Healthy climbers (n=5). Extreme altitude vs. Sea level was evaluated on Maximal heart rate. Exposure to extreme altitude during a Mt. Everest expedition decreased maximal heart rates from 186 beats/min at sea level to 155 beats/min at 5,400 m and 142-144 beats/min at 8,750 m.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: