are these the same thing?? the apple health app says mine is like 800 something 😀😀😀

sorry if this isn’t allowed

https://doi.org/10.1016/j.clnu.2021.06.029

https://pubmed.ncbi.nlm.nih.gov/34358822

Abstract

BACKGROUND

The ketone body β-hydroxybutyrate (βHB) has been shown to act as a signaling molecule that regulates metabolism and energy homeostasis during starvation in animal models. A potential association between βHB and metabolic adaptation (a reduction in energy expenditure below predicted levels) in humans has never been explored.

OBJECTIVE

To determine if metabolic adaptation at the level of resting metabolic rate (RMR) was associated with the magnitude of ketosis induced by a very-low energy diet (VLED). A secondary aim was to investigate if the association was modulated by sex.

METHODS

Sixty-four individuals with obesity (BMI: 34.5 ± 3.4 kg/m^(2) , age: 45.7 ± 8.0 years, 31 males) enrolled in a 1000 kcal/day diet for 8 weeks. Body weight/composition, RMR and βHB (as a measure of ketosis) were determined at baseline and week 9 (W9). Metabolic adaptation was defined as a significantly lower measured versus predicted RMR (from own regression model).

RESULTS

Participants lost on average 14.0 ± 3.9 kg and were ketotic (βHB: 0.76 ± 0.51 mM) at W9. A significant metabolic adaptation was seen (-84 ± 106 kcal/day, P < 0.001), with no significant differences between sexes. [βHB] was positively correlated with the magnitude of metabolic adaptation in females (r = 0.432, P = 0.012, n = 33), but not in males (r = 0.089, P = 0.634, n = 31).

CONCLUSION

In females with obesity, but not males, the larger the [βHB] under VLED, the greater the metabolic adaptation at the level of RMR. More studies are needed to confirm these findings and to explore the mechanisms behind the sex difference in the association between ketosis and metabolic adaptation.

TRIAL REGISTRATION NAME

Clinicaltrials.gov.

STUDY REGISTRATION ID

NCT02944253. URL: https://clinicaltrials.gov/ct2/show/NCT02944253.

------------------------------------------ Info ------------------------------------------

Open Access: False

Authors: Catia Martins - Jessica Roekenes - Gary R. Hunter - Barbara A. Gower -

Additional links: None found

Hi all,

background / context: I'm a 36F who has been doing CICO for over a year and I've been consistent in my workouts (2 spin classes per week, 3 weight lifting sessions, 2 days of low intensity cardio) and nutrition (1400-1500 cals per day) and my weight has stayed static AF.

I was recently reading an article that talked about using a resting metabolic rate (RMR) test with a licensed facility to get a more accurate read on RMR to help hone in on caloric needs.

I'm curious if anyone has used an RMR to help hone in on their caloric needs and make progress?

I want to have some base markers for my health and I figure these are good places to start. I have been tracking my weight, sleep (and soon to be caloric intake) every day and I want to build a base foundation of my body.

My Apple Watch said I have low VO2 Max but my doctor said a proper VO2 Max test would be a waste of money. So naturally, I want to take a VO2 Max test and get a baseline for myself.

The other tests are these so I can calibrate my scale/MyFitnesssPal/Apple Watch to the results.

• i.e. my scale says my RMR is 1905 and I am 14% body fat. How true is that?

• i.e. my Apple Watch says I have low VO2 Max. Is it accurate and in range of the proper test?

Has anyone gotten these tests done in Philly at a place they can recommend?

EDIT: I have checked out BioFit Philly but they seem to be closed permanently.

According to Dr. Jason Fung, caloric restriction leads to the body burning fewer calories, but why doesn't the same happen when fasting? Isn't fasting just extreme caloric restriction?

I did a Dexa scan today and got measurements of my body composition. It was about what I expected actually. I’m 5’4” and 169 pounds, and overall had 38% body fat. That number is skewed however, because I’m a runner and my legs are all muscle, so it makes up for all the fat in my abdomen. My trunk was at 45% body fat. I also had 2.11 pounds of visceral fat, which is not good.

The metabolic test gave me my resting metabolic rate, which is apparently pretty good at 1525. But my respiratory exchange ratio shows that I burn sugars almost exclusively - most people burn a mix of fat and sugar. I’m insulin resistant, so that makes sense. I eat a lot of carbs, so my body burns that and doesn’t touch my fat. I have to lower my carbs to force my body to switch to burning fat.

Overall I’m really glad I did the tests. They gave me really great info so I can personalize my diet and workouts more appropriately. If you have a DexaFit near you, I highly recommend getting it done. Just be emotionally prepared, the numbers can be quite startling.

Hey guys, just had my resting metabolic rate pre-op work done to see if that was the reason I'm fat. Apparently I have a really fast metabolism (2491 base, 3496 total energy output). First of all, how much does that mean I've been eating to get this fat?! But my second and real question... what does this mean for getting sleeved? What if I can't keep up with the amount of calories I need once I have a little bitty pouch? According to the print out, once I hit maintenance phase I will need 2491 to 3238 calories per day (and that's not even including exercise). Can RMR change as you lose weight? I'm going to ask my doctor all these questions when we have our follow up next week, but just wondering if anybody else was in the same or similar position.

I went only and used one of those calculators to find my RMR and it said 1,554 which seems kinda high to me. Ik it’s just an online calculator but it seems to high.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5816424/

Background

The resting metabolic rate (RMR) decrease, observed after an obesity reduction therapy is a determinant of a short-time weight regain. Thus, the objective of this study was to evaluate changes in RMR, and the associated hormonal alterations in obese patients with a very low-calorie ketogenic (VLCK)-diet induced severe body weight (BW) loss.

Results

Despite the large BW reduction, measured RMR varied from basal visit C-1 to visit C-2, − 1.0%; visit C-3, − 2.4% and visit C-4, − 8.0%, without statistical significance. No metabolic adaptation was observed. The absent reduction in RMR was not due to increased sympathetic tone, as thyroid hormones, catecholamines, and leptin were reduced at any visit from baseline. Under regression analysis FFM, adjusted by levels of ketonic bodies, was the only predictor of the RMR changes (R2 = 0.36; p < 0.001).

Conclusion

The rapid and sustained weight and FM loss induced by VLCK-diet in obese subjects did not induce the expected reduction in RMR, probably due to the preservation of lean mass.

--------------------

My own input:

One of the driving forces behind increased caloric consumption is the lack of supplying sufficient energy. This drives the body to request more dietary intake but how do we get into this situation? Gary Taubes has already explained this in his book (I believe "Good calories bad calories").

Your total energy expenditure (TEE) has to be provided for by dietary energy intake and energy release from your fat mass. If both of these sources are not sufficient to foresee in the TEE then the body will send hunger signals to make you consume more. This shortage in energy will also drive down RMR (which is part of your TEE).

Exercise by itself will only raise TEE, making the difference between TEE and available energy bigger.

Diet can mess up this whole mechanism. A high carb meal triggers insulin, it blocks fat release, lowers glucose and interferes with the leptin signaling. All these factors create a situation where the energy from the body, available for metabolism, is reduced. This is both on a short term so that frequent eating happens but also on a longer term with leptin being interfered so that the RMR goes down. If the total available energy goes down then the body tries to compensate this with a lower TEE.

Making the connection with this publication

Pretty interesting study on how sleep, or the lack thereof, can influence our resting metabolic rate.

Study is available here: http://onlinelibrary.wiley.com/doi/10.1002/oby.21198/abstract

Hi all! I’m getting diagnosed with hypothyroidism. One of the biggest symptom I’m having is inability to lose weight despite calories deficit which was very easy for me. Before getting my blood work done after struggling with losing weight I went to measure my RMR(resting metabolic rate where you lay down for 20 minutes and breathe and machine measures the amount of oxygen the body produces which is a symbol of how much energy it burns). The result was pretty high and my RMR is 1760 calories which is confusing cause I can’t lose weight and I have other hypothyroidism symptoms + my blood work confirmed the diagnose. I’d believe that my RMR would by way lower, something seems off. Question is: can you have high metabolic rate and still not being able to lose weight with hypothyroidism diagnose ? Please don’t tell me I underestimate calories intake because I measure my food work kitchen weight scale and I always cook for myself and I did try different techniques

So my petite ladies. I am 5’1” sw184 cw174 gw125. I’ve been doing IF for 2.5 weeks now. I do 18:6 just started spinning again didn’t exercise the 1st 2 weeks while I adjusted to keto/if. Well I went today & had my rhr measured. My caloric max to lose weight is 1450. So, this was a big deal for me. The doctor told me between 31-39 weeks to reach my goal weight. I thought this information was handy & motivating now I really know what the limit is for calories, & don’t have to be at 1200. I am 54 years old.

http://www.itriminternational.com/globalassets/se/pdf/forskningsrapporter/bryner_ja_coll_nutr_1999.pdf

Diet

40% protein, 49% carbohydrate, 11% fat ingested five times a day yielding a total of 800 kcals daily

Protocol

One group aerobic + diet (CD), the other group high intensity (resistance training) + diet (RD).

Results

Reduced RMR for the CD group

More muscle loss for the CD group

Lower fat loss for the CD group

My personal take on this:

The groups had around 44~46% BF so there is no reason their RMR would drop, if (!) the body has sufficient access to the fat. This is where the type of exercise makes a difference. The RD group is doing an exercise that depends more on depleting their muscle glycogen. This creates a bigger sink for glucose so that they would control insulin at lower levels. This gives them more access to their fat storage and as a result there is a lower muscle waste (0.8kg versus 4.1kg !!). I believe resistance training is also raising growth hormone more than aerobic exercise.

In contrast, the CD group doesn't deplete the muscle glycogenstores as much and thus is not as receptive for glucose. Unfortunately there is no measurement of insulin levels to provide more insights. The problem with insulin is that it creates moments of reduced energy availability which the body has to compensate by breaking down muscle protein. When insulin is raised, it prevents fat release trying to drive down glucose. As this effect starts to take place you will end up with a situation where you don't free up fat and have low glucose. Doing exercise at such a moment is a big issue because you need energy so the body has to overwrite the effect of insulin by releasing corisol, epinephrine and norepinephrine. Hormones that will free up energy by breaking down liver glycogen, release fat from adipose but also breaks down muscle protein for conversion to glucose. The CD group shows this by having more muscle breakdown and lesser fat reduction. The purpose of insulin is not to build up muscle, it is to lower glucose. So don't consider it an anabolic hormone as if it has the purpose of building muscle. The muscle growth that it can stimulate, I consider this a side effect of increasing the cell activity through mTOR. It is the purpose to increase cell activity to get rid of glucose. This may be different for babies earl

It is not uncommon to hear people make claims about different metabolisms in different people, but are different metabolic rates truly possible?

Can people with the same amount of body fat, lean muscle mass, and weight really have resting/basal metabolic rates that differ by any significant amount (i.e. >=30 kcal/day)?

If there is a difference, compared to the "more efficient" metabolism, what is the "less efficient" one doing with the extra calories? Is it unproductively converting it into waste heat? Or is it doing some kind of meaningful work?

I went to do a body analysis on November 16, and set up a new meeting for today to check-in and see if the changes I made based on the information are working.

Found out I dropped about .5 lb of "earthly weight", dropped about 1.26% body fat and upped lean muscle mass by 1.18%. So whatever I did is working and I should continue. However, the next number was quite shocking and I've spent a few hours looking into it and can't make heads or tails.

Maybe someone here can help...

My RMR went up from 1,659 to 1,978. And now, instead of eating around 1700 calories on non-OTF days and 2000 on OTF days, I'm to eat 1900 on non-OTF days and 2200 on OTF days. My protein requirements went up from 119 grams per day to 150 grams per day and that was expected... But goodness. I don't understand WHY there was such a difference.

Anyone have any ideas and/or suggestions on how to manage this change on a Plant-based diet (I'm vegan)? The idea of MORE food seems daunting.

Just curious because they are the only tests I know of that could prove how well the Whoop is tracking calories burned.

https://www.ncbi.nlm.nih.gov/pubmed/28871849

Abstract

The purpose of this study was to determine the effects of resistance training only (RT; n = 10), dietary intervention only (DIET; n = 10), resistance training plus diet (RT+DIET; n = 10), and control (CON; n = 10) on body composition and resting metabolic rate (RMR) in a cohort of 40 premenopausal female volunteers. Subjects in DIET and RT+DIET were provided with daily macronutrient and calorie goals based on DXA and RMR tests, with protein maintained at 3.1 g/kg/day. Subjects in the RT and RT+DIET groups performed a supervised progressive RT program consisting of exercises for all the major muscle groups of the body. Results showed a significant month-by-group interaction for change in fat mass with no significant linear trend for control. The three treatment groups all showed significant linear decreases in fat mass, but the slope of the decrease became progressively steeper from the RT, to DIET, to RT+DIET. A significant linear increase for lean mass was seen for resistance training only. There was a nonsignificant increase in RMR in all groups from Month 0 to Month 4 but no significant month by group interaction. In conclusion, significant reductions in fat mass were achieved by all experimental groups, but results were maximized by RT+DIET. Only the RT group showed significant increases in lean mass.

Hey guys, I apologise for any bad format; I’m on my phone and have literally posted on reddit probably once in my life.

They sound the same so I’m sorry if this is a dumb question but I’m cramming an assignment and i can’t find the answer anywhere..

A team lead on this new study is Herman Pontzer, an anthropologist who has done a lot of great work on figuring out human energy expenditure. To me, he is one of the key players in science uncovering that it's diet which is key to losing weight, and that exercise -- for all its excellent virtues -- is a mere and distant helper to weight loss.

Today's news is a headline maker in that we didn't know that TEE had an upper limit, and we certainly didn't know that it was only 2.5x BMR! Pontzer's previous work did uncover that bursts of regular activity didn't stack calorie totals like we imagine when we log them in our calorie trackers for several reasons (we adapt, during and after and upon repeating the activity). With today's news, we're starting to see the extreme metabolic boundaries come into view.

Article:

Human endurance is capped at 2.5 times resting metabolic rate, study finds

• https://www.upi.com/Health_News/2019/06/06/Human-endurance-is-capped-at-25-times-resting-metabolic-rate-study-finds/3851559826871/

> For the study, the researchers measured daily calories burned by athletes who ran six marathons a week for five months as part of the 2015 Race Across the USA, which stretched 3,000 miles from California to Washington, D.C. They also looked at other feats of endurance, such as 100-mile trail races and pregnancy. > > The investigators found that the mega-marathoners burned 600 fewer calories a day than expected. This suggests that the body can power down its metabolism to keep the body going.

Article:

#Is There a Limit to Human Endurance? Science Says Yes

##Some say the breaking point is all in your head, but new research suggests it’s also in your gut

• https://today.duke.edu/2019/06/there-limit-human-endurance-science-says-yes

> Beyond the threshold of 2.5 times a person’s resting metabolic rate, researchers found, the body starts to break down its own tissues to make up for the caloric deficit. > > One explanation for this limit may be the digestive tract’s ability to break down food, [...] > > In other words, eating more won’t necessarily help someone make Iditarod history. “There’s just a limit to how many calories our guts can effectively absorb per day,”

STUDY

Extreme events reveal an alimentary limit on sustained maximal human energy expenditure

• https://advances.sciencemag.org/content/5/6/eaaw0341 (seem

Hey all...

I just had my RMR tested and am looking for a way to set it manually for Garmin Connect and/or my Garmin Fenix 5X+. Looking at my past reports, my RMR stats have been higher than they should be.

How can this be done?

Thanks!!