Body Fat
#3
Senior Member
Joined: Jul 2006
Posts: 62
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From: Austin
I went for testing at the University of Texas Fitness Institute https://www.edb.utexas.edu/fit/...they have a DEXA machine (https://www.edb.utexas.edu/fit/bodycompfit.php) which is about $100k and the most accurate method...however, they also do skinfold and a couple of other tests to see how well the other tests correlate, so you can do them at home. Not every person will correlate well with every method, but in my case, the skinfold showed 9.9 and the DEXA 10.0%.
#5
Senior Member
Joined: Nov 2004
Posts: 2,544
Likes: 1
Wikipedia's entry on body fat percentage includes a fairly accurate method of measuring body fat that you can do yourself in a pool: https://en.wikipedia.org/wiki/Body_fa...ty_Measurement
#7
Banned.
Joined: Sep 2007
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From: Hammerland
I've heard they are wildly inaccurate. That would be expected as resistance/impedance varies greatly across the population and is not necessarily a simple function of fat content.
#8
They claim accuracy within 30% of your actual body fat percentage, but measurements are consistent so you can track whether you are trending upwards or downwards.
#9
try this for body fat calculation
https://www.he.net/~zone/prothd2.html
I have never compared it to a pich test or other means, but it is interesting
https://www.he.net/~zone/prothd2.html
I have never compared it to a pich test or other means, but it is interesting
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#11
Tandem Vincitur
Joined: Sep 2005
Posts: 3,317
Likes: 2
From: Northern California
Bikes: BMC Pro Machine SLC01, Specialized Globe, Burley Rock 'N Roll tandem, Calfee Dragonfly tandem.
I use a Tanita scale and a tape measure. The Tanita will get you in within a few percent of the truth, and you can monitor changes over time. I measure my waist every day as well, which is quite sensitive to changes in body fat.
https://www.tanita.com/IronManScales.shtml

https://www.tanita.com/IronManScales.shtml

#12
Senior Member

Joined: Jun 2007
Posts: 813
Likes: 0
From: O'Fallon Il/St Louis
Bikes: 2015 Cervelo S3, Fuji SL1, Felt TK2, Cervelo P2C
I use a Tanita scale and a tape measure. The Tanita will get you in within a few percent of the truth, and you can monitor changes over time. I measure my waist every day as well, which is quite sensitive to changes in body fat.
https://www.tanita.com/IronManScales.shtml


https://www.tanita.com/IronManScales.shtml


the other way I've done it is in a "bod pod" it's alittle more scientific... but still i believe being tested while in the water is the best way.
my tanita measurement was 9.5% and bod pod was 10.1 %... i gotta quit eating my ice cream before bed..
#13
I think with the Tanita / electronic type scales your total hydration is important. The better hydrated you are the easier the "ohms?" can travel through you body indicating less fat. I use my Tanita to measure weight in the morning, but remeasure in the evening when I'm better hydrated for BF tracking.
#14
Banned.
Joined: Sep 2007
Posts: 1,765
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From: Hammerland
I think with the Tanita / electronic type scales your total hydration is important. The better hydrated you are the easier the "ohms?" can travel through you body indicating less fat. I use my Tanita to measure weight in the morning, but remeasure in the evening when I'm better hydrated for BF tracking.
#15
Tandem Vincitur
Joined: Sep 2005
Posts: 3,317
Likes: 2
From: Northern California
Bikes: BMC Pro Machine SLC01, Specialized Globe, Burley Rock 'N Roll tandem, Calfee Dragonfly tandem.
I think with the Tanita / electronic type scales your total hydration is important. The better hydrated you are the easier the "ohms?" can travel through you body indicating less fat. I use my Tanita to measure weight in the morning, but remeasure in the evening when I'm better hydrated for BF tracking.
https://www.tanita.com/BodyFat_BodyWater.shtml

Proper hydration is essential for life. Maintaining a healthy body water % improves overall health and keeps you feeling energized and operating at peak performance. Tanita’s new Scale plus Body Fat monitors with Body Water % calculate body water levels using bioelectric impedance analysis (BIA), the same highly accurate method used in all our body fat monitoring products. BIA monitors body water % by sending a safe, low-level electrical signal through the body. Our body water scales are the first of their kind available for in-home use.
#16
Senior Member
Joined: Jul 2006
Posts: 62
Likes: 0
From: Austin
In my case the Tanita was way off compared to the skinfold and the DEXA...my first assessment a few months ago (prior to my weight loss) the DEXA said 24.8 and Tanita said 10.8%. The testers indicated that sometimes the Tanita is accurate, depending on the person, race, and other factors; but sometimes it's way off.
I'm not sure if comparing the delta between two Tanita tests would be accurate or not.
I'm not sure if comparing the delta between two Tanita tests would be accurate or not.
#17
I did a nutrition study over the summer and they used a thing called a bod-pod that basically seals you in this little pod thing and does magic and measures your body fat, lean weight, lung capacity and a few other nifty things. It seemed rather expensive but they payed me for the study so it worked out well for me.
10.2% average over three measurements.
https://www.bodpod.com/
10.2% average over three measurements.
https://www.bodpod.com/
#19
pan y agua

Joined: Aug 2005
Posts: 31,810
Likes: 1,232
From: Jacksonville
Bikes: Willier Zero 7; Merlin Extralight; Calfee Dragonfly tandem, Calfee Adventure tandem; Cervelo P2; Motebecane Ti Fly 29er; Motebecanne Phantom Cross; Schwinn Paramount Track bike
Unless you're one of those very few people who is so thin that their body fat is so low that they could produce more power by adding a little body fat, why does it even matter what the number is?
If you need to lose weight, you know it without a body fat% calculation.
If you need to lose weight, you know it without a body fat% calculation.
#20
Senior Member
Joined: Sep 2006
Posts: 776
Likes: 0
Calipers and scales are amazingly inaccurate. I have no idea why anyone buys one.
And, why would you want to know? Cycling is about strength to weight ratio. Raise the first and lower the second. Body fat is not equal to weight.
And, why would you want to know? Cycling is about strength to weight ratio. Raise the first and lower the second. Body fat is not equal to weight.
#21
Senior Member
Joined: Jul 2006
Posts: 62
Likes: 0
From: Austin
The DEXA is useful because it's not just body fat %, it's muscle mass.
If you are on a training program, it's very helpful to know how much fat mass you are losing as well as how much muscle mass you are gaining. In my case over 3 months I lost 24.4 pounds of fat mass and gained 6.7lb of muscle mass. I knew I was losing weight by checking the scale, but I didn't know if I was just losing fat. Was I gaining muscle or not?
In addition the DEXA told me exactly where I was gaining the muscle...breaking it down between upper body, torso and legs.
If you are on a training program, it's very helpful to know how much fat mass you are losing as well as how much muscle mass you are gaining. In my case over 3 months I lost 24.4 pounds of fat mass and gained 6.7lb of muscle mass. I knew I was losing weight by checking the scale, but I didn't know if I was just losing fat. Was I gaining muscle or not?
In addition the DEXA told me exactly where I was gaining the muscle...breaking it down between upper body, torso and legs.
#22
pan y agua

Joined: Aug 2005
Posts: 31,810
Likes: 1,232
From: Jacksonville
Bikes: Willier Zero 7; Merlin Extralight; Calfee Dragonfly tandem, Calfee Adventure tandem; Cervelo P2; Motebecane Ti Fly 29er; Motebecanne Phantom Cross; Schwinn Paramount Track bike
^ Several tools for that: 1) mirror, 2) belt, 3) power meter (or speed on a cycle computer).
The proof is in the pudding, not the caliper.
The proof is in the pudding, not the caliper.





