Characteristics of age-related changes in blood pressure, oxyhemoglobin saturation, and physique in Bolivians residing at different altitudes: presentation of basic data for health promotion.
Keita Shimura, Akira Kubo
PMID 31645811WHAT IT FOUND
Bolivians living at higher altitudes had lower blood pressure and oxygen saturation than those in lowlands, but blood pressure and BMI increased with age in both groups.
This cross-sectional survey provides baseline data for health promotion but does not test any intervention.
Key findings
01Valley group residents had significantly lower systolic and diastolic blood pressure and oxygen saturation than lowland group residents.
02Blood pressure and BMI increased with age in both altitude groups, with significant differences observed between older and younger brackets.
03There was a weak but significant positive correlation between BMI and systolic blood pressure after adjusting for age, sex, and altitude.
STILL TO COME
How it was doneWhat they found
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What it does not show
The study is cross-sectional, so it cannot show how the same individuals change over time. Participants were volunteers at health promotion events, which may introduce selection bias if healthier or more health-conscious individuals attended. Lifestyle factors such as diet, physical activity, and socioeconomic status were not measured, so their influence on the observed blood pressure and BMI differences is unknown. The study reports basic physiological characteristics and does not evaluate any therapeutic intervention or clinical outcome.
Declared interests
None declared. The research received no specific grant from any funding agency.
The easy way to misread this
Do not interpret the lower blood pressure in the valley group as a protective effect of altitude that could be replicated in therapy. This is a cross-sectional survey of population characteristics, not a study of an intervention, and it cannot establish cause and effect between altitude and health outcomes.