Why the study?
Does 12 days of high-altitude exposure increase catecholamine levels in women, and does menstrual cycle phase affect this response?
Population
16 eumenorrheic women in either their follicular or luteal phase.
Comparison
12 days of high-altitude exposure (4,300 m) vs Sea level (baseline)
Design
Cohort
Follow-up
12 days
Authors
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Women show comparable norepinephrine increases across menstrual phases at altitude; extends prior male findings but remains hypothesis-generating for practice.
Does 12 days of high-altitude exposure increase catecholamine levels in women, and does menstrual cycle phase affect this response?
Women exhibit similar sympathetic nerve activity increases (measured via catecholamines) to high-altitude exposure as men, with blood pressure and heart rate responses varying slightly by menstrual cycle phase.
Mazzeo et al. (1998) studied this question.
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