My clients weight didn't change but her body fat went up from 31% to 37%. What could cause the increase in BF?
We measure my client once a month and her weight is steady since 3 month. Last time her BF went from 31% to 37%, we measured the following week again to make sure that it wasn't an error from the device, but it was still high. What could be the cause for the sudden high BF?
I'm not sure if you are aware but bioelectrical impedance device has +/- of up to 14% depending upon if your client is hydrated, has jewelry on, or isn't holding the device appropriately. Maybe BF% isn't the best way to measure if it will be discouraging. I would look into other ways of measuring her progress such as doing body measurements, whether it's hip to waist or measuring bust, waist, hip, arms, and thigh or doing a fitness assessment (3 minute step test, push up/modified push up, measurements, and flexibility).
Hope this helps!
I use the skinfold calipers for bodyfat measurements.
If you are afraid this could be medical, I would refer her to her doctor; nothing wrong with being careful.
Are you sure your client's eating and drinking habits are exactly the same? Do you think the change of seasons could have something to do with it?
Good luck; please let us know how this turns out.
Aside from measuring her body fat and weight, are there any other anthropometric measurements that you take (such as skinfolds, waist circumference, circumference on other body parts)? The less tools that's used, the less accurate a picture you have of what's going on with your client.
It could very well be the device itself or even the conditions that you measured your client. Normally when you take these measurements, they should be taken under the same conditions as the first time you measured your clients. Did you make sure the conditions were the same the last two times you measured your client with the device?
did you by any chance also take anthropomorphic measurements? Did she complain to you of her clothes fitting differently? Those can be just as accurate indicators of change.
Such a body fat increase in the absence of weight gain is all but impossible. Even though her exercise routine is moderate, it should be sufficient to maintain her muscle mass. You mention that she is very consistent in her food intake. Bio-electrical impedance is also sensitive to hydration levels.
Regardless of the outcome of this question, I would not measure body composition once a month on a client like her. Given her moderate exercising, it is not likely to change significantly and may just make her feel worse.
As Karin, indicated, it would be unheard of for her body fat percentage to make a jump like that without her weight also climbing. Did you also take measurements? I use measurements, as well as a bio-impedance scale to double check all my assessments and to decrease the chances of a dehydration issue. The tanita scale I use, also tests for hydration level to see the accuracy of the body fat reading and see where dehydration may be an issue.
If you don't have measurements on her, I would take measurements and see if the body fat percentage you get with measurements is equal to what you saw with the scale and then go from there.
Her bodyfat went up, as tested several times, but her weight did not change. Have I got that right?
This tells me that her muscle mass went down percentage wise. Using tubing and bands may not be enough to sustain her muscle mass, especially only once a week. ACSM recommends miniumum of 2x's a week. Have you considered revising the strength training program?