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Anthropometric changes at high altitude.

C S Fulco, A Cymerman, N A Pimental

    Aviation, Space, and Environmental Medicine
    |March 1, 1985
    PubMed
    Summary
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    High altitude exposure led to significant fat-free mass loss and a slight increase in body fat percentage in young males. Anthropometric measurements showed changes in body composition during the study.

    Area of Science:

    • Human Physiology
    • Altitude Physiology
    • Anthropometry

    Background:

    • High altitude (HA) environments pose physiological challenges.
    • Understanding anthropometric changes at HA is crucial for assessing body composition shifts.
    • Previous prediction equations for body fat may require validation in HA settings.

    Purpose of the Study:

    • To document anthropometric changes during an 18-day high altitude residence.
    • To evaluate body weight, circumference, and skinfold alterations at HA.
    • To test the accuracy of existing prediction equations for body fat changes at HA.

    Main Methods:

    • Eight young males resided at 4300m for 18 days.
    • Body weight, 10 circumferences, and 7 skinfolds were measured serially.

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  • Body density was determined by hydrostatic weighing before and after HA exposure.

    • Main Results:

    • Body weight decreased significantly after 9 days at HA.
    • Hydrostatic weighing revealed a 2.06 kg loss in fat-free mass and a non-significant fat mass increase.
    • Percent body fat increased from 16.6% to 17.7%.

    Conclusions:

    • High altitude exposure causes significant loss of fat-free mass.
    • Body fat percentage increases despite overall weight loss at HA.
    • Specific anthropometric measurements (chest, scapula, hip, neck, calf, abdomen) showed significant alterations.