does bodyweight factor in when doing caliper measurements?

[Lao Tzu]

I saw this website on the diet board. I've used bioelectrical impedence before and they usually say im at 28-29% bf, but the calipers said i was about 23%. However i weigh 290. So would having the measurements i put in on a 290 frame make my bf % even lower than that.

 

[muscleup]

yes...Your bodyweight is a huge factor...bioelectrical impedence is bullshit by the way...Caliper is the most accurate...Well except for underwater testing

 

[Quadsweep]

That would mean you have 66.7# of fat. I do 9 site readings with Lang calipers.

Quad

 

[pwr_machine]

Bioelectical impedence uses electrical conductivity to estimate fat-free mass. Water conducts electricity. Muscle holds the majority of water in the body. Since this test is dependent upon hydration status, it can skew the results of his bodyfat. I've seen reports of these being about +/- 8 to 10 % off.


Calipers are your best bet and readily available. Bodyweight is not part of the equation by ACSM standards. However, you can calcuate LBM once you know your % bf.

 

[Hid-He-Us]

Quad............ where can I get these calipers and do they come with instructions?

 

[pwr_machine]

Not to take away from what Quad will tell you, but Lange calipers are EXPENSIVE. I've seen prices ranging from 150-250 bucks. The cheap, plastic, less than 10 dollar versions can give the same mm measurements as the Lange calipers. They can usually be purchased at vitamin stores. If not, do a quick search for skinfold calipers online.

The American College of Sports Medicine has some pretty good guidelines on how to conduct the measurements. It takes practice, but it can be learned fairly easily.

 

[Quadsweep]

the only problem with the cheap calipers is they squeeze to hard or to soft. hey have to ahve a specific pressure per caliper head surface area or it is wrong. Yes the langs are expensive. Mine were $240.

Quad

 

[pwr_machine]

I've matched my 6 dollar pair up against the Lange's and there's no difference. Although I agree that the degree of squeeze could vary, but I believe that could be alleviated with practice.

 

[Hid-He-Us]

Does anyone else have caliper advice. I want a good pair,but I think $240 is a bit steep and I am willing to spend more than $6.

 

[pwr_machine]

Take this for what it's worth. I have an undergad degree in h&pe with an emphasis in fitness and wellness mgt. I have a master's degree in h&pe with an emphasis in exercise science. I'm pursuing a PhD in Human Performance with an emphasis in teaching and administration. I'm a NSCA certified strength and conditioning specialist. With that experience, I've performed over 1000 body fat tests on numerous clients. I'd save a buck or two if I were you and just get some good practice in with a cheaper version. Good luck with the device you decide to choose. With practice, you'll get adequate measurements in no time.