Effects of a single bout of exercise at moderate altitude on blood pressure (BP) are largely unknown.
To evaluate the effect of a single exercise bout at moderate altitude on BP.
Field study, Alpine mountains.
127 men, 71 women (138 normotensive, 60 hypertensive).
Exercise duration: 2.5 ± 0.4 h; 650-m difference in altitude.
Main Outcome Measures:
BP and heart rate (HR).
Hypertensives had (1) higher systolic BP (SBP) and diastolic BP (DBP) before exercise (P < .01), whereas this difference was lost during exercise; (2) increased HR during the entire duration of exercise; and (3) significantly decreased SBP and DBP (P < .05) throughout the entire period of exercise.
Exposure to a single exercise bout at moderate altitude is associated with a transient decrease in SBP and DBP, which is more pronounced in hypertensives.