Quote:
Originally Posted by scorbett1103
(Post 5131123)
Because most coaches are not trained health professionals. They purchase the rights to sell IP and take the basic info training from the company, but that doesn't mean they've done the extra research to really understand how ketosis works (among other things). Measuring blood ketones is really the only way you could quantify whether you were in ketosis or not via a test - urine ketostix only measure excess (unused) ketones. this is an excerpt from Wikipedia on Ketosis:
"Note that urine measurements may not reflect blood concentrations. Urine concentrations will be lower with greater hydration, and after adaptation to a ketogenic diet the amount lost in the urine drops while the metabolism remains ketotic. In addition most urine strips only measure acetoacetate, while after adaptation the predominant ketone body is β-hydroxybutyrate.[10] Ketoacidosis is a metabolic derangement that cannot occur in a healthy individual who can produce insulin, and should not be confused with physiologic ketosis."
|
When I did IP the first time nobody used the word Ketosis. Even though it was the mechanism they were using. I knew it. I had read bodyopous,- by Dan Duchaine Atkins, Rapid Fat loss all a decade prior and mountains of material mostly at this point in the fitness realm.
My wager over the last few years the word doesn't have the same negative associations in the profession as much. So much science is out showing how much better a VLCD approach is versus LFHC approach. So now it is a selling point.
Here is a nice little blog post on what may be causing your stalling on a VLCD approach.
http://ketodietapp.com/Blog/post/201...d-Read-Further
ruled.me is a nice keto centric site I recently found.
http://www.ruled.me/ketosis-ketones-and-how-it-works/
I nerd out on this stuff at a research page level. I also listen to frequent researchers on the topics primarily associated with VLCD approach. I am interested in capacities a human body performance goal might that may not be fat loss related, using a ketogenic real food approach for a fatloss, and neuro and cognitive function treatments.
In summary Keto stick measure acetoacetate of the ketosis mechanism and excess protein is expressed as albumin and known as Proteinuria. They are tested using separate regent chemicals. keto sticks only flag acetoacetate using the reagent Nitroprusside for ketones and Bromophenol blue for albumin (protein) measurements. Keto sticks only measure Ketone bodies, more exact acetoacetate.
The only downside of a high excess ketone expression I have read is might get a slight insulin bump and shutdown the formation of ffa. The % of ketones in waste is very little as percentage of energy created. Measuring BHB in the blood is the best way. I would use any of these measures only to figure out your boundaries and not tie performance to them.
Lyle McDonald book the ketogenic diet. - One molecule of FFA will yield 129 to 300 ATP or more depending on the length of the FFA that is burned. Compared to aerobic glycolysis (which produces 36-39 ATP per molecule of glucose), fats provide far more energy. However, more oxygen is required to burn one molecule of FFA compared to burning one molecule of carbohydrate. This means that the body has to work harder to oxidize fats than glycogen during exercise. Although FFA produces more energy per molecule, carbohydrate is still a more efficient fuel.
My comment - In the words of Tim Ferris, 'we don't necessarily want efficient we want effective'. Ketone is the effective choice and glucose is the efficient choice.
I had previously done the math of variation in ketone ATP and ATP from glycolosis has about a 10% variation in ATP production and FFA to ketones is nearly a 60% variation depending on the length of the fat chain. That ketone ATP variation can contribute to an excess. Ketosis is a one way street. That ffa molecule becomes a ketone it is burned or discharged. Unlike standard glucose energy mechanisms in metabolisms.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2129158/