I get frustrated measuring with callipers too of late - I seem to be getting different readings. Here's what Tom Venuto's article in BFFM Inner Circle says:-
Suprailiac
The usual description of this site is "a diagonal fold just above the iliac crest." When I first read that, I nearly blew a fuse. The iliac crest or, "hip bone," can be felt starting a few inches away from the navel and sweeping in a long arc out to the side of the body and around back to the sacrum. Just where did these jokers mean? If I measure closer to my navel, I get a small number. If I measure out at the very fattest part of the love handles, I get a big number. So, where? And if you look at pictures on
the web or in articles, they differ from each other and, in some cases, the text differs from the photo.
Well, take a calming breath. Here's how to do it. The method presented here has the advantage of being very repeatable.
You're going to measure directly above a bump on the front of your hip bone: The iliac crest is a ridge of bone along the top of your pelvis. In the photo, the dashed line marks the top of the hip bone as it sweeps up and over the side of the body and then descends downwards. The cross marks the location of a raised bump where the hip bone seems to disappear (because it curves inwards).
(Suprailiac Measurement Site)
There are three ways to find this spot. The first is to just feel for the bump. Once you've experienced locating it accurately once, you can find it easily but, how do you confirm you have the right place? Here are two methods.
Method 1:
• Standing, put your right leg up on a chair with your knee bent and your right thigh roughly parallel to the floor. Place your hand on top of your right thigh and follow the mid-line back to your hip bone.
• Feel the hip bone along the crease between your thigh and torso with your finger tips and discover the following features: As you move your fingertips towards your groin you will feel a place where your fingers fall off of the hip bone and sink into soft tissue. Okay, now move back, away from the groin, along the crease, and you'll feel your fingers come back up onto the hip bone. As you come up onto the hip bone and move just a bit further away from the groin, you'll feel your fingers fall into a valley, but still be feeling bone. Thus, you've just found a ridge of bone along your hip and located where it crosses the crease between leg and torso. Place your index finger on the peak of that ridge right at the crease between your thigh and your torso. Without moving your hand, put your foot down on the floor.
• Your index finger is now sitting on the landmark for taking the measurement. With your thumb, reach up and grab a roll of skin. Play a bit and you'll see that the fold of skin naturally wants to fall along a diagonal rather than parallel to the floor. That's the skinfold you want. Your index finger will move up off of the landmark about an inch when taking the fold, but it will start vertically above the landmark.
Method 2:
This method is fast but first you need to do a little experiment: Sit in a chair, feet flat on the floor.
Place your fingertips in the crease between your right leg and your torso in the vicinity of your hip bone. Move as if you are crossing your legs, putting your right foot on your left knee. This is a twisting movement rather than simply lifting the knee.
If you have trouble, it may be helpful to think of your leg below the knee as a golf club and you are moving as if you were putting a golf ball with your foot. The moment you start to move, you will feel a muscle pop up under your fingertips. Keeping the tension on in the muscle, follow the muscle all the way up to where it meets the hip.
Keep going up, following the tendon all the way to the very crest of the hip. If you go even a little further, your fingertip will leave the hip bone and sink into soft tissue. You have just found the origin of the sartorius muscle along the iliac crest. This is your landmark.
Now that you've learned where the sartorius originates on the iliac crest, here is the method:
• Standing, place your fingertips on your hip bone in the crease between your right thigh and torso.
• Pretend your right foot is a golf club and putt an imaginary ball away from you, 45 degrees off to the left. You will feel the sartorius pop up just as you did in the experiment.
• Locate the origin of the sartorius on the iliac crest with your pointer finger. This is your landmark.
• With your thumb, reach up grab a roll of skin. Play a bit and you'll see that the fold of skin naturally wants to fall along a diagonal rather than parallel to the floor. That's the skinfold you want. Your index finger will move up off of the landmark about an inch when taking the fold, but it will start vertically above the landmark.
Edited by: C.CHARLES at: 4/27/2009 (12:52)