10% difference in BF% results?

Jorra

If you refuse to change your beliefs despite mountains of evidence to the contrary, why should anyone listen to anything you have to say?

Everyone has a free will. I'm not making a person believe anything that I have said. If they do, they have done so on their own.

Why is it that every time you are presented with peer-reviewed scientific evidence that contradicts your own formed ideas, you can dismiss it so easily? I feel everyone would be a lot better off if they were open to changing their beliefs when presented with scientific evidence. That's the beauty of science. It's there to prove what's right to the best of its ability until a better solution is found.

In this case, it seems that some methods of measuring body fat are more accurate than others. This is important if you are trying to reach a certain quantitative goal. However, it is less important if you are simply looking for improvement. In that case, you can easily look for trends in the readings.

AZackery

Why is it that every time you are presented with peer-reviewed scientific evidence that contradicts your own formed ideas, you can dismiss it so easily? I feel everyone would be a lot better off if they were open to changing their beliefs when presented with scientific evidence. That's the beauty of science. It's there to prove what's right to the best of its ability until a better solution is found.

Use what you want to use Jorra. Use can also use the ignore button.

Acg67

If you refuse to change your beliefs despite mountains of evidence to the contrary, why should anyone listen to anything you have to say?

Everyone has a free will. I'm not making a person believe anything that I have said. If they do, they have done so on their own.

Why is it that every time you are presented with peer-reviewed scientific evidence that contradicts your own formed ideas, you can dismiss it so easily? I feel everyone would be a lot better off if they were open to changing their beliefs when presented with scientific evidence. That's the beauty of science. It's there to prove what's right to the best of its ability until a better solution is found.

In this case, it seems that some methods of measuring body fat are more accurate than others. This is important if you are trying to reach a certain quantitative goal. However, it is less important if you are simply looking for improvement. In that case, you can easily look for trends in the readings.

as i posted earlier, using BIA for tracking trends can also be problematic

"I’ve heard people make the argument that, while BIA may not be that accurate, it should work fine when tracking change over time. The theory, they say, is that the error should be the same each time you use it.

The problem is that this isn’t true. As I mentioned in the article on hydrostatic weighing, the density and hydration of fat-free mass can change with weight loss. If this can affect the accuracy of hydrostatic weighing for measuring change over time, then you can be sure that the effect on BIA outcomes is going to be significantly larger.

Researchers have looked at the accuracy of BIA for tracking body fat change over time. In one study, the disagreement between BIA and the 4-compartment model ranged from -3.6% to 4.8% for measuring change. This means you could lose 3.6% body fat, but BIA would show no change. Or, BIA could tell you that you lost 8.8% body fat when you really only lost 4%. In fact, in this study, plain ol’ bod mass index (BMI) did just as well as BIA for predicting change in body fat, except for in one person."

Jorra

In this case, it seems that some methods of measuring body fat are more accurate than others. This is important if you are trying to reach a certain quantitative goal. However, it is less important if you are simply looking for improvement. In that case, you can easily look for trends in the readings.

as i posted earlier, using BIA for tracking trends can also be problematic

"I’ve heard people make the argument that, while BIA may not be that accurate, it should work fine when tracking change over time. The theory, they say, is that the error should be the same each time you use it.

The problem is that this isn’t true. As I mentioned in the article on hydrostatic weighing, the density and hydration of fat-free mass can change with weight loss. If this can affect the accuracy of hydrostatic weighing for measuring change over time, then you can be sure that the effect on BIA outcomes is going to be significantly larger.

Researchers have looked at the accuracy of BIA for tracking body fat change over time. In one study, the disagreement between BIA and the 4-compartment model ranged from -3.6% to 4.8% for measuring change. This means you could lose 3.6% body fat, but BIA would show no change. Or, BIA could tell you that you lost 8.8% body fat when you really only lost 4%. In fact, in this study, plain ol’ bod mass index (BMI) did just as well as BIA for predicting change in body fat, except for in one person."

Faced with the evidence you have presented, I have changed my mind. You make an excellent and evidence-based case.

It's just that easy.

meerkat70

not sure what you have against science and accuracy, did you look at the 2 studies i posted?

Please respect what I have said. I trust my scale and handheld monitor.

I'm not clear. Are you suggesting that your claims should be respected even though the science points the other way? Why?

AZackery

I'm not clear. Are you suggesting that your claims should be respected even though the science points the other way? Why?

I'm not stuck on science. Use what you want and use the ignore button too.

servilia

Yeah, science doesn't matter! :noway:

Jorra

I'm not clear. Are you suggesting that your claims should be respected even though the science points the other way? Why?

I'm not stuck on science. Use what you want and use the ignore button too.

I can't ignore you until I understand why you are not "stuck on science"? Why is science not compelling enough for you? Truly, I don't understand.

rileysowner

To those who have looked at the research on this, how does the BodPod match up to the better forms of measuring BF%?

meerkat70

I'm not clear. Are you suggesting that your claims should be respected even though the science points the other way? Why?

I'm not stuck on science. Use what you want and use the ignore button too.

There isn't an ignore button...

I agree with you about science though. Pah! What have those pesky scientists given us anyway... oh... wait....

I've asked you a few times before how you're getting on? I think when someone's very firm in their opinions, it's always good to see how they're getting on in weight and inch loss terms. Helps us to evaluate - albeit anecdotally - the value of their comments.

CaptainGordo

There isn't an ignore button...

Under any user pic next to a forum post, there's now an arrow with three menu options: View Profile, Send Message, and Ignore User. If there is someone whose posts you don't care to see, you may choose to ignore them. You will not see their posts in any public forum, or in any Group of which you are a member.

AZackery

There isn't an ignore button...

There's an ignore option. If you notice, everyone has a down arrow button next to their name. Click on it and you will see the ignore user option. Chose that option to ignore someone, so you don't have to see their comments.

I don't have time to fight with people. I have so many haters on here and they seek me out. No matter what I say on here, they find something wrong with what I have said and they try to attack me. I'm not going to waste my time on them. I will just ignore them.

engineman312

no one is seeking you out. you just have a habit of dominating a thread with a lot of statements that are generally disputed with cold hard science.

meerkat70

ROFL. I never spotted that. I guess I've never felt the need to ignore anyone before...

I think you'll find that I'm universally regarded as a lover, not a fighter. I don't hate you. I do find you tremendously perplexing.

I'm also intrigued that you always duck the 'how's your weight loss going' question...

meerkat70

no one is seeking you out. you just have a habit of dominating a thread with a lot of statements that are generally disputed with cold hard science.

Precisely this.

Misiaxcore

Oh dear, what have I started? Dx

But what I'm getting from everyone is that... measuring progress by BF% isn't good, and neither is using the scale (my understanding from a million other threads I've read since June).

Ho-hum.

thecrossfitter

Faced with the evidence you have presented, I have changed my mind. You make an excellent and evidence-based case.

It's just that easy.

Me too! I always knew my scale wasn't entirely accurate- but I assumed it was at least consistent and was using it to track progress/change over time (if seemed logical, and I'm not super informed on this stuff). Thanks for posting this info! I've looked into it and am so glad I have I think for now I'll stick to just measuring inches and maybe once a year or so go and get a better reading once I do more research into where I could do that.

Thanks again! I was actually getting discouraged with my current way (well, maybe I really have gained fat?!... We'll have to see!) but now I know

Jorra

no one is seeking you out. you just have a habit of dominating a thread with a lot of statements that are generally disputed with cold hard science.

I agree. You are not sought out, I believe the issue is with you. In every thread that devolves, it devolves because you dismiss scientifically proven evidence in favor of your own incorrect assumption and claim you know what you are talking about without providing evidence in your favor. I'm sorry that others do not have more faith in you than in science.

AZackery

no one is seeking you out. you just have a habit of dominating a thread with a lot of statements that are generally disputed with cold hard science.

Yes, my haters seek me out. It never fails they try to make it seem as if I don't know what I'm talking about. I'm going to continue to use my body fat scale and body fat monitor, no matter what anyone says. If someone wants me to use something else, then they need to send me the money so that I can use that method each time.

Peace!

servilia

There isn't an ignore button...

No matter what I say on here, they find something wrong with what I have said

That's because you always say something so blatantly INCORRECT and MISLEADING and they don't want others who might be new to be mislead by the nonsense!!

meerkat70

Oh dear, what have I started? Dx

But what I'm getting from everyone is that... measuring progress by BF% isn't good, and neither is using the scale (my understanding from a million other threads I've read since June).

Ho-hum.

Ah, I'm sorry lovely. You have most certainly not started anything. You posed a completely reasonable question. I hope you've managed to pull out at least some reasonable answers. x

CaptainGordo

I can't ignore you until I understand why you are not "stuck on science"? Why is science not compelling enough for you? Truly, I don't understand.

servilia

Oh dear, what have I started? Dx

But what I'm getting from everyone is that... measuring progress by BF% isn't good, and neither is using the scale (my understanding from a million other threads I've read since June).

Ho-hum.

Don't worry hon it's not you. This person AZackery has a way of ruining every thread she steps in that's all.

It's not that measuring progress by BF% isn't good, it's that it's a hard measurement to get correct, kwim? Unless you have access to a lab or DEXA (think that's what it's called).

Acg67

To those who have looked at the research on this, how does the BodPod match up to the better forms of measuring BF%?

http://weightology.net/weightologyweekly/?page_id=175

Bodpod v DEXA

CaptainGordo

Oh dear, what have I started? Dx

But what I'm getting from everyone is that... measuring progress by BF% isn't good, and neither is using the scale (my understanding from a million other threads I've read since June).

Ho-hum.

DEXA Scanning and Bod Pod, according to this doctor-written and reviewed article: http://www.medicinenet.com/script/main/art.asp?articlekey=56830

AZackery

Oh dear, what have I started? Dx

But what I'm getting from everyone is that... measuring progress by BF% isn't good, and neither is using the scale (my understanding from a million other threads I've read since June).

Ho-hum.

Misiaxcore, you haven't started anything. I have haters and they love to try to come and attack me and make people believe that I don't know what I'm talking about.

I don't care about my scale weight. I'm aiming to lose fat and not scale weight. Fat loss and scale weight loss aren't the same thing. I focus on my body fat percentage, pounds of fat and inches loss. I use my body fat scale and body fat handheld monitor to track my body fat percentage and I use this formula each month to see how much fat I'm losing.

Weight x Body fat percentage = Pounds of fat
Weight - Pounds of fat = Pounds of lean body mass

Some people are against body fat scales and body fat handheld monitors, they think that people should use DEXA scan, Dunk Test, Bod Pod, but all those things have errors too. Nothing is 100% accurate and no one can tell me that they are. The only think that's stated to be 100% is an autopsy.

If you want to track your body fat percentage. Do so and use whatever method you want to us.

engineman312

a body weight/fat percentage scale is about as accurate as if i put a steel girder on a scale and used only its weight to determine it's elemental composition.

meerkat70

I don't care about my scale weight. I'm aiming to lose fat and not scale weight. Fat loss and scale weight loss aren't the same thing. I focus on my body fat percentage, pounds of fat and inches loss. I use my body fat scale and body fat handheld monitor to track my body fat percentage and I use this formula each month to see how much fat I'm losing.

And how are you getting on with that?

CaptainGordo

Some people are against body fat scales and body fat handheld monitors, they think that people should use DEXA scan, Dunk Test, Bod Pod, but all those things have errors too. Nothing is 100% accurate and no one can tell me that they are. The only think that's stated to be 100% is an autopsy.

True -- nothing is 100%, but scientific evidence proves that some methods are more accurate than others.

Where the question posed by the OP was in regard to different readings, some of us are trying to help by providing facts, rather than anecdotal evidence.

Jorra

Misiaxcore, you haven't started anything. I have haters and they love to try to come and attack me and make people believe that I don't know what I'm talking about.

If you ever once proved to someone that you do know what you are talking about, you wouldn't be "attacked." (I prefer "disagreed with" and "proven wrong")