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The computation of body composition data using a programmable calculator.

R T Withers

    Computers in Biology and Medicine
    |January 1, 1986
    PubMed
    Summary
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    A new body composition program for the TI 59 calculator estimates body density, percent body fat, fat mass, and fat-free mass using underwater weighing and helium dilution methods.

    Area of Science:

    • Biomedical Engineering
    • Human Physiology
    • Anthropometry

    Background:

    • Accurate body composition analysis is crucial for health assessment and performance monitoring.
    • Traditional methods can be time-consuming and require specialized equipment.
    • Developing accessible tools for body composition analysis is an ongoing need.

    Purpose of the Study:

    • To develop and validate a body composition analysis program for the Texas Instruments TI 59 programmable calculator.
    • To provide a portable and user-friendly method for determining key body composition variables.

    Main Methods:

    • Utilized underwater weighing to determine body density.
    • Measured ventilated residual lung volume via helium dilution.
    • Developed a program for the TI 59 programmable calculator to process these measurements.

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    Main Results:

    • The program successfully calculated body density, percent body fat, fat mass, and fat-free mass.
    • Output variables were clearly labelled on the calculator's printout.
    • Demonstrated the feasibility of using a programmable calculator for body composition analysis.

    Conclusions:

    • The developed TI 59 program offers a practical approach to body composition assessment.
    • This method provides valuable data for health and fitness professionals.
    • Programmable calculators can serve as effective tools in physiological measurements.