Our lab has demonstrated that voluntary apneas (i.e., breath-holds) at high altitude cause decreases in heart rate in lowlander populations. Apneas at altitude also cause cardiac arrhythmias in a majority of lowlanders. Unlike lowlanders, native highlanders (e.g., Nepali Sherpa) do not get the same decreased heart rate and cardiac arrhythmias during voluntary apneas at high […]
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