Effects of exercise training at 1,500 m on arterial oxygen saturation and pulse rate

We compared the effects of exercise training at a low (610 m) altitude with those at moderate (1,500 m) altitude on arterial oxygen saturation (SaO2) and pulse rate (PR) between two groups of men: five subjects in the low altitude group (LG), and five other subjects in the moderate-altitude group (M...

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Published inAviation, space, and environmental medicine Vol. 65; no. 1; p. 41
Main Authors Sakai, A, Yanagidaira, Y, Takeoka, M, Asano, K, Kashimura, O, Terasawa, K, Ueda, G
Format Journal Article
LanguageEnglish
Published United States 01.01.1994
Subjects
Adult
Altitude
Humans
Male
Oxygen - blood
Physical Exertion
Pulse
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Summary:We compared the effects of exercise training at a low (610 m) altitude with those at moderate (1,500 m) altitude on arterial oxygen saturation (SaO2) and pulse rate (PR) between two groups of men: five subjects in the low altitude group (LG), and five other subjects in the moderate-altitude group (MG), after giving them a series of bicycle training in a hypobaric chamber. Training intensity was 75% HRmax for 60 min/day, 3 times per week for 5 weeks. Before and after the training, Sao2 and PR were measured with a pulse oximeter during step-tests under various air pressures, corresponding to 610 m, 2,000 m, and 4,000 m, respectively, in the chamber. We found that: 1) Sao2 during the step-test carried out at 2,000 m and 4,000 m in the hypobaric chamber was significantly increased in MG compared with that in LG; and 2) PR during the step-tests at 610 m, 2,000 m, and 4,000 m was significantly decreased in MG compared with that in LG. Thus, we conclude that exercise training at a moderate altitude is a useful method for increasing Sao2 and decreasing PR and may prevent mountain sickness.
ISSN:0095-6562