1 / 23

Anthropometry

BPK 303. Anthropometry. Spring 2014. Anthropometric Measures Fall 2013. Anthropometric Equipment. Anthropometry. Landmarking necessary for repeatability of measures Only a few landmarks are required for the measures used in this course. Landmarks must be short horizontal lines.

doris-foreman
Download Presentation

Anthropometry

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. BPK303 Anthropometry Spring 2014

  2. Anthropometric Measures Fall 2013

  3. Anthropometric Equipment

  4. Anthropometry • Landmarking necessary for repeatability of measures • Only a few landmarks are required for the measures used in this course Landmarks must be short horizontal lines Standard Landmarking & Measurement Position

  5. Stretch Stature (Height) • Head held in Frankfort Plane • Requires two people to measure • Feet together • Stretch justified as overcoming diurnal variation • Check for heel lifting (especially in children)

  6. Variability of Height • Height can vary up to 2.5cm a day or more • Compression of the intervertebral discs occurs • Lost height can be restored with fetal curls

  7. Weight • Fluctuation • Calibrated scale • Beam balances tend to hold calibration longer • OMRON Scale and Body Composition Analyzer

  8. Skinfolds • Parallel fold of double thickness of skin plus subcutaneous adipose tissue • Caliper applied perpendicular to the fold • Fold held firmly by left hand while full pressure is applied by caliper • 2 second timing until reading • Skinfolds can be measured at any site where there is a loose junction between subcutaneous adipose tissue and the underlying fascia.

  9. Skinfold Calipers • Slim Guide • Caliper Pressure? Spring Tension / Jaw Surface Area • Harpenden 10 gm.mm-2 • Lange 35 gm.mm-2 • Slim Guide 11.4 gm.mm-2 Harpenden Slim Guide Lange Fatometer Adipometer

  10. Skinfold Calipers

  11. Skinfold Descriptions SubscapularSkinfold the caliper distance when applied one centimeter distally from the left thumb and index finger raising a fold beneath the inferior angle of the scapula in a direction running obliquely downwards at an angle determined by the natural lines of tension in the skin. The pick up can be made consistent by placing the little finger of the left hand on the angle of the scapula then placing the index finger just to the right of it and the thumb just below it. Site

  12. Girths • Circumference perpendicular to the long axis of the body segment • Tape should be touching but not indenting skin • Cross-handed technique

  13. Compressive Clothing Effect

  14. Projected Heights • Perpendicular distance from floor to landmark • Tibiale Height usually measured standing although sometimes used seated for disabled populations. • Derived length = difference between two projected heights

  15. Direct Lengths • From landmark to landmark

  16. Bone Widths & Breadths • Caliper type and placement specific to measurement • Press firmly while measurement is made • Vernier Scale

  17. Validity & Reliability Unreliable Not Valid Reliable Not Valid Unreliable Valid? Reliable Valid

  18. Measurement Reliability • How do you quantify reliability? • Is a correlation coefficient adequate? • Technical Error of Measurement?

  19. Correlation Coefficient: Poor indicator of reliability • A high correlation between trials does not necessarily indicate reliability unless slope is 1 and intercept is 0. • Means of trials 1 and 2 would be different. Paired t-test with no sig. diff. between means with a high correlation would show high reliability. But this would be clumsy analysis. r = > 0.9 Trial 2 Line of Identity Trial 1

  20. Technical Error of Measurement Measure of variability between two trials

  21. % TEM • To compare the relative reliabilities of measures using different units such as height and weight, a %TEM is used. • %TEM is the absolute TEM divided by the mean of the measurements multiplied by 100. • A dimensionless score that can be compared across measurements. • Also for same measurement when size is an issue

  22. % Technical Error of Measurement

  23. Typical Skinfold %TEMs

More Related