Arm Relaxed Girth

Girths are circumference measures at standard anatomical sites around the body. The relaxed arm girth measurement is a measure of the circumference of the upper arm when the biceps is relaxed. See the list of girth measurement locations.

purpose: To measure the circumference of the arm, as a measure of the underlying musculature and adipose tissue. Girth measurements combined with skinfold measurements can give a clearer picture of changes in tissue composition and distribution of muscle and fat.

equipment required: flexible metal tape measure and pen suitable for marking the skin. If a plastic or cloth tape is used, it should be checked regularly against a metal tape as they may stretch over time.

pre-test: Explain the test procedures to the subject. Prepare forms and record basic information such as age, height, body weight, gender. See more details of pre-test procedures.

relaxed arm girth measureprocedure: First mark the site to be measured. This girth measurement is usually taken on the right side of the body. The arm is relaxed and hanging by the side, and the circumference is taken at the level of the mid-point between the acromion (boney point of shoulder) and the olecranon (boney point of elbow) processes. When recording, you need to make sure the tape is not too tight or too loose, is lying flat on the skin, and is horizontal.

reliability: Factors that may affect reliability include changes to the testing personnel, constant and even tension on the tape, and correct landmarking (finding the correct anatomical site formeasurement).

advantages: low costs involved in the testing procedure.

comments: Clothing over the site should be removed if possible to make sure measuring tape is positioned correctly and that the correct circumference is determined.

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