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Lab #8 Estimation of Body Composition from Skinfold Thickness Triceps Skinfold • Triceps - vertical fold; on the posterior midline of the upper arm; halfway between the acromium and olecrannon processes; with the arm held freely to the side of the body. Nieman DC. Exercise Testing and Prescription: A Health-Related Approach. 6/e. Copyright ©2007 McGraw-Hill Higher Education. All rights reserved. Abdomen Skinfold • vertical fold; 2-3 cm right lateral of the umbilicus. Suprailiac Skinfold •Suprailiac - diagonal fold; in line with the natural angle of the iliac crest taken in the anterior axillary line immediately superior to the iliac crest. Thigh Skinfold Vertical fold; on the anterior midline of the thigh, midway between the proximal border of the patella and the inguinal crease Nieman DC. Exercise Testing and Prescription: A HealthRelated Approach. 6/e. Copyright ©2007 McGraw-Hill Chest Skinfold ) • Diagonal fold; one-half the distance between the anterior axillary line (men) or one-third the distance between the axillary line (women) and the nipple Nieman DC. Exercise Testing and Prescription: A Health-Related Approach. 6/e. Copyright ©2007 McGraw-Hill Higher Education. All rights reserved. Measurement of SKF Thickness • All measurements taken on right side • Do not use subjects who are sweaty or have lotion on their skin • OPTIONAL: Carefully identify, measure and mark the skinfold site (markings should be with a pen on skin, should be a ‘X’ – each line represents a specific part or the site location) • Grasp the SKF firmly between the thumb and index finger of your left hand. Lift the fold 1 cm above the site to be measured • Lift the fold by placing your thumb and index finger 8cm apart on the line that is perpendicular to the long axis of the SKF. • Keep the fold elevated while you take the measurement • Place the jaws of the caliper perpendicular to the fold, approx. 1 cm below the thumb and index finger, and release the jaw pressure slowly • Take the SKF measurement within 1-2 sec • Open the jaws of the caliper to remove it from the site. Close the jaws slowly to prevent damage or loss of calibration