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EXECUTIVE MODERATOR
Join Date: Feb 2000
Posts: 11,690
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fukkenshredded:
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Ok, I thought you might go there. The reason the study is relevant is because we induce a similar state with the use of r-ALA. But nevermind, let's just cut to the more basic and go from there...how about:
Metabolic responses to exercise after fasting
G. L. Dohm, R. T. Beeker, R. G. Israel and E. B. Tapscott
Fasting before exercise increases fat utilization and lowers the rate of muscle glycogen depletion. Since a 24-h fast also depletes liver glycogen, we were interested in blood glucose homeostasis during exercise after fasting. An experiment was conducted with human subjects to determine the effect of fasting on blood metabolite concentrations during exercise. Nine male subjects ran (70% maximum O2 consumption) two counterbalanced trials, once fed and once after a 23-h fast. Plasma glucose was elevated by exercise in the fasted trial but there was no difference between fed and fasted during exercise. Lactate was significantly higher (P less than 0.05) in fasted than fed throughout the exercise bout. Fat mobilization and utilization appeared to be greater in the fasted trial as evidenced by higher plasma concentrations of free fatty acids, glycerol, and beta-hydroxybutyrate as well as lower respiratory exchange ratio in the fasted trial during the first 30 min of exercise. These results demonstrate that in humans blood glucose concentration is maintained at normal levels during exercise after fasting despite the depletion of liver glycogen. Homeostasis is probably maintained as a result of increased gluconeogenesis and decreased utilization of glucose in the muscle as a result of lowered pyruvate dehydrogenase activity.
Any reason this does not apply? Also, you might want to think about the slowed rate of muscle glycogen depletion before you rant too much about muscle wasting. THINK about it.
Incidentally, your comment about burning muscle can readily be countered with the simple observation that we are generally on steroids when we engage in this type of cardio. More on anticatabolic strategies later...let's just get where we agree on this first issue...
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poantrex
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Why bother. Its obvious that he's so damn stubborn that he'll refuse to acknowledge that we're correct - even in the face is so much evidence. I'm a manager and I run into employees like this every once in a while - they can justify something no matter what they do wrong and refuse to acknowledge being incorrect. Needless to say these types don't last very long.
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fukkenshredded:
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Poantrex...
This effort is for the benefit of every member, including Nelson. Nelson is a good thinker when he applies himself, and I have in fact learned a lot from him. There are not too many issues that I am educated on, but you could say I have a small bit of knowledge in this particular arena, perhaps even enough to offer some instruction...
The rarity of me having enough knowledge to post can be witnessed by the low number of posts that I have in relation to my time here.
I am not arguing with Nelson, I am offering an alternative point of view.
The correct one, as it turns out in this case, but you surely can see that this entire thread is instructive in many ways, on many levels, and is an overall benefit to all of us, including me.
See, if Nelson is able to prove me wrong, I learn. If not, he learns. Its a win win situation, not a flaming contest. I don't get mixed up in those. I ignore insults, generally (or try to) and only respond with relevant information or a quick opinion.
True, you did put up some studies, but I don't think Nelson ever read through your post.
Not to mention that a big part of this community still seems to be puzzled by this question, so we can just put it to rest with this course of dialogue.
I am actually flattered that Nelson would engage me in a debate...it takes time and effort to do so with anyone, and I genuinely appreciate his input.
Nelson, when you see this post be sure to look up #94 above.
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NM:
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Poantrex: "Why bother. Its obvious that he's so damn stubborn that he'll refuse to acknowledge that we're correct - even in the face is so much evidence. I'm a manager and I run into employees like this every once in a while - they can justify something no matter what they do wrong and refuse to acknowledge being incorrect. Needless to say these types don't last very long."
It's true. I'm very stubborn when it comes to logic. I refuse to ignore it. I suppose I could go along with crowd or the hero of the day, but I'd rather know the truth and be disliked. (BTW: Good to see I'm being compared to the employees at the Walmart.)
So you're saying I won't last long in this business?
Okay FS: There are couple of things about this thread that aren't jiving. Glucose was elevated in one group during exercise (?) but was not elevated in either group during exercise. (???) Maybe I'm missing something. Maybe I'm tired. It also states that the same group was tested--first fed, then fasted -- and after the second session,there was more fat loss than after the first. Well, after two exercise sessions and a severe drop in caloric intake, there's bound to be SOME fat loss. That doesn't really support the argument very well though. And yes, some of those results suggest muscle wasting and the fact that peole use steroids is completely irrelevant to the issue at hand.
This study also states that glycogen is still present, even after a long fast and doing exercise, which is what I've been saying all along. At any rate, this test was conducted after a 24 hour fast, which has nothing to do with cardio first thing in the morning before breakfast or the long term effects of continuing this practice so it's a moot point.
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juice authority:
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Stubborn??? What a understatement!! Logic?? What a joke! Your reasoning on things defies all logic. The conclusions you come up with consistently lack evidence or merit. When presented with concrete evidence to the contrary you downplay and discredit the source of the information. Once again you are made to look like AN ASS not only by me and also by FS and poantrex who actually provided the scientific data you requested proving your position on the ineffectiveness of cardio on an empty stomach dead wrong. You've once again proven to the members of this board what a think-headed moron you are. One person on this thread said he reconsidered buying your book because of this. Nothing could make me happier to hear that. If this results in just one person reconsidering the purchase of your book it was worth my time. Mission accomplished!
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fukkenshredded:
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Nelson--
I'm prepared to accept the notion that you may be tired, because yes, you are missing the point of the two studies I posted. Perhaps you have only read the abstracts...I suggest looking at the actual studies when you are fresh.
In a nutshell, what is being documented is the fact that fasting does impact fat mobilization during exercise and after exercise, even though blood glucose levels are not impacted in a corresponding way.
Now I see that you have budged just a tad in spite of your earlier postition...the statement that 'after two cardio sessions and severe caloric drop, there is bound to be SOME fatloss'...yes, there is, and that term SOME can be proven, specifically, to be MORE than with the same exercise without the fasting.
That is, in fact, the whole point of the first study posted--to show that the rate of fatloss is indeed directly proportional to the degree of fasting prior to exercise--and the point of the second study is to show that there is not really a correspondence between plasma glucose levels DURING exercise and fatloss--(with regard specifically to fasting)--which was the assertion that you initially challenged as being incorrect (so in that regard you were right), but as I stated early on, the results are undeniable even if the presented logic at that point was flawed.
Now why is there a homeostasis of glucose? Look again at what was found--A HIGHER CONCENTRATION OF FAT METABOLITES DURING EXERCISE IN THE FASTED GROUP--what is difficult to understand about that? And how can we say that it is aresult of glucose levels being altered when the entire study JUST PROVED THAT THEY ARE UNCHANGED DURING EXERCISE???
What could that homeostasis mean? You assert that it is evidence of muscle wasting? Are you sure that you want to make that assertion here on this board for all to see? Read it again--DECREASED UTILIZATION OF GLUCOSE IN THE MUSCLE--
Is that not evidence specifically contrary to your theory that in a fasted state muscle wasting will occur during exercise?
I suggest you reread your own words before responding to this post.
As far as steroid use being completely irrelevant to the issue at hand, well, you have me there. Strictly speaking we are not pursuing the answer to this question for a person using steroids, but in light of what I have just reiterated and clarified for you, does it not stand to reason that if one is taking steroids, one can safely engage in exercise on an empty stomach and not increase the risk of muscle loss?
Indeed, the evidence actually implies that there exists a type of muscle preserving mechanism in the event of exercise after fasting.
Maybe Mother Nature had her head on straight when she contemplated the possibility of a hunter having to chase down a meal when he was hungry...
Is that even remotely possible?
You actually said to this board that the studies posted do not support my assertions very well. OK, would you please interpret the studies in a way that supports your theory?
Or, could you now post your studies backing your claims?
Really, sir...I am starting to believe that you are simply interested in being proven right rather than learning or contributing here. After all, you have disagreed with me several times now, but have not logically supported your side of this issue. We don't even have any of your references to discuss, because you have so far contributed none.
Incidentally, the answers you posted to my questions about glucose are not only incomplete, but they are also largely incorrect.
I will help out here for the board.
1. Almost right, but your propostion that the body will burn from the source requiring the least amount of energy is not always true. Remember, fat is stored SPECIFICALLY FOR BURNING IN AN EMERGENCY STATE. The caloric release from fat is greater than that of muscle, so if the body chooses muscle over fat it more quickly depletes itself and therefore dies sooner.
You see the logic here? SURVIVAL is the central issue.
2.You gave an ambiguous reply that is not only noncommital, but noninformative as well. The answer is--NO. The body does NOT react identically to aerobic vs anaerobic exercise. The difference is in what is burned, and why, specifically how much oxygen, how much sugar, and from where they are being drawn. Those answers are determined in part by--guess what?--WHETHER OR NOT THE BODY HAS RECENTLY BEEN FED, and how much sugar there is for instant conversion to energy.
3. Almost impossible is correct. But look closely at your answer. You suggest that if one fasts for days then such and such could happen. How then can you assert that fasting has no impact on fat metabolism? You can only assert that a short fast has no significant impact, a point which can be debated, but to suggest that fasting is completely irrelevant (as suggested by your first response in this thread wherein you say it is biologically impossible to burn more fat in a fasted state) does not correlate to this answer. So it seems that you do not fully understand your own postition on this issue.
4. Absolutely dead wrong. True, the alternate sources of energy are fat and muscle, but again, the biological imperative of survival compels the body to choose fat FIRST when confronted with the choice of that or muscle. Again, examine my simple empirical proof (notwithstanding the evidence I have presented since)...muscle yields 600 calories of energy per pound burned. Fat yields 3500. Now, I have burned over 5000 calories in the gym MANY times, and in a fasted state, and for consecutive days. Why then does my bodyweight not drop according to the depletion of muscle? Even if they were both burned at the same rate (they are not, muscle is not burned at any significant rate at all in this scenario), I would still see a drop in bodyweight nearly triple what I actually see.
Explain this.
5.Wrong again. The answer is: absence of carbs AND fat. Again--the BODY BURNS MUSCLE LAST (during exercise in a fasted state)if there is any excess fat. This is why fat is stored in the first place--to be burned if needed in the absence of food.
Now look again at your own answer here. You state that the best way to burn fat is to have more muscle--true enough. Why? More biologically active, hence more heat. Higher metabolism is not entirely accurate, but it will suffice here. Anyway, how can you reconcile this truth with the notion that the body will burn muscle first? If that were the case, more muscle would simply mean the body would wait even LONGER to burn fat, because it would simply burn up that extra muscle. But we just said that more muscle burns off extra fat...
You see the conundrum here? Again, your own position is self-annihilating, and can be disregarded because it is not demonstrably possible in any given scenario, since it at once suggests that muscle is its own fuel and simultaneously its own preservation.
Nelson, my friend, it is time to rethink your postition on this issue. Even if you choose to argue the point on the board, you now know that I am in fact correct, or at least I can make a compelling case--one that you have yet to refute with any data or sound logic.
I notice that you like to utilize the term 'logic' in your posts, and I do believe that you are a student of logic (as am I), and it is because of this belief that I am very interested in your detailed reply to my points, one by one, with supporting documentation.
To those who are reading this ongoing dialogue, may I suggest that it is counterproductive to insult Mr. Montana, as it is possibly a result of these insults that leads him to so strongly cling to his assertions. There is no shame in being mistaken, and if I am mistaken here (I may well be), then please have the courtesy to point out to me where my errors are, with specificity, so that I may correct my thinking and learn, and therefore grow.
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transporter:
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u do cardio on empty stomach in starvation mode.
the body in starvation mode will burn muscle but not fat.
nelson is right here!
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jg1:
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I guess that explains my results then
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fukkenshredded:
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Uh...wanna show me the studies to support that? Any study at all will be fine.
This whole 'starvation mode' way of thinking is suspect from the beginning.
Somewhere people bought into the idea that starving the body causes it to hold fat, and that food causes it to shed fat.
No.
Excess calories cause the body to store fat. Reduction of food causes the body to burn fat.
Eventually, the metabolism slows, yes.
Now, what I want you to show me is a study ANYWHERE that suggests that the metabolism slows down OVERNINGHT, or after a 12 hour or 24 hour fast. Just show me where the body panics after 12-24 hours and holds on to fat, especially and SPECIFICALLY DURING EXERCISE. SHOW IT TO US ALL PLEASE.
THINK about what you are suggesting.
You are suggesting that the body holds on to fat for survival.
WTF??
No, the body BURNS fat for survival. See, the body stores fat PRECISELY TO AVOID HAVING TO BURN MUSCLE WHEN FOOD IS SCARCE.
I'll be waiting and checking back for the studies supporting claims otherwise.
OK, Nelson, others...I've made the case. It's plain and simple logic that I have presented, backed up with both studies and personal experience. You have yet to refute it with anything resembling logic or fact.
ANYONE JUST LOOKING AT THIS THREAD WHO HAS NOT READ EVERY POST MAY ANSWER THE QUESTION BY LOOKING AT POST # 94 ON THIS THREAD.
And there you have it, then.
The final, accurate word on cardio on an empty stomach is:
IT IS MORE EFFECTIVE. DO IT.
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NM:
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You're not getting it JG1. Nobody is saying you didn't get results. They just weren't because of doing cardio in the morning on an emty stomach. I'm sure if you did cardio AFTER a small breakfast the results would have been exactly the same.
FS: A very well thought out argument. You make some good points but you're logic is flawed. You're extrapulating conclusions based on this one test that, as explained, was not conducted in a controlled manner. (See past posts for explanations.) This is something that would make for a detailed six hour seminar and I can't cut and paste every sentance so I'm going to have to sum it up -- which I'm sure will not be good enough for some peopele, but hey, NOTHING is good enough for some people.
Real quick: Why is there homeostasis of glucose? For exactly the reason you mentioned. Mother Nature is pretty shrewd. The body is designed to survive. This shows that all the claims that the body doesn't have available carbs after a 10 hour fast is dead wrong. I don't know how many more times I have to say this.
Yes, there was a higher concentration of fat metabolites among the fasted group, but, AGAIN, t was their second session! Of course, they had less fat then when they started exercising!!! You see, you're arguing a point without seeing the entire picture. That, is what logic is all about. It's like closing your eyes, grabbing an elephants tail and saying, Oh, an elephant is like a snake! This was not TWO SEPERATE GROUPS. It was the SAME group. Do you not see how that makes this flawed?
And another thing about the 12 people tested. THEY HAVEN'T EATEN IN 24 HOURS! This is a completely different argument. Not to mention they don't say how much fat was actually lost. Does it take a 24 hour fast to lost an eight of an ouce more fat? if so, you got me. Maybe that's the case. But fuck man, is that worth it? ALSO, this was a one shot deal. How many 24 hour fasts can someone endure, before catabolism takes place?
Your other points are an argument (though polite) to my response to previous staements you made. Let's make them a seperate issue because all the back and forth is getting complicated. At any rate, I believe we're just in dossagreement there. You make the argument that our survival mechanism allows us to burn fat. I say our survival mechanism is exactly why we burn muscle. Muscle requires less energy since each unit is only 4 calories whereas fat is 9 calories. Also, muscle is heavier than body fat. If the mode is survival, or more specifically, the need to keep moving, what makes more sense to drop? Something lighter or something heavier? And what makes more sense to use? Something that requires more energy or less? You see -- it's simple logic, and the body which is designed for survival can only operate in such a manner. It doesn't give a shit what you want to look at.
Hey Juice, hows that Clomid therepy working out for you?
HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA!!!
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fukkenshredded:
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Nelson, my friend, fair enough.
We just simply disagree.
I can answer the question about what makes more sense to drop, muscle or fat--and your assertion that muscle is dropped first because it is lighter and burns faster.
Your position is noted, and is not entirely without merit from the standpoint of common sense.
However, the question is not 'which is lighter' or 'which burns easier', the question is, rather, 'which yields more energy'?.
Ask yourself this question:
WHat is the biological function of fat?
Answer:
To provide energy to the body in the absence of food.
What is the biological function of muscle?
Answer:
To move the body.
Now, an organism will utilize muscle for executing the chase, and fat to support the muscle with the necessary energy required that chase and other movement necessary for survival.
The fact that muscle burns faster does NOT suggest that it is burned first.
Again, my initial question still stands for anyone who can answer it...
Why do I not lose weight that corresponds to muscle loss (600 calories per pound) when I exercise?
Can you please explain that? Can anyone explain that?
Nelson, an explanation for that will suffice for me, and I will leave this thread alone after that. I cannot make my point any clearer, and I see that I have not convinced you on this issue...so be it.
I just want to understand how you account for the preservation of actual body tissue (regarless of what that tissue is) in accordance to my question.
600 calories per pound, I burn 5000 calories, and yet, I am not 8 pounds lighter.
Explain.
Peace. It is a fun debate.
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NM:
FS: "Nelson, my friend, fair enough.
Your position is noted, and is not entirely without merit from the standpoint of common sense.
Ask yourself this question:
WHat is the biological function of fat?
Answer:
To provide energy to the body in the absence of food.
What is the biological function of muscle?
Answer:
To move the body.
Now, an organism will utilize muscle for executing the chase, and fat to support the muscle with the necessary energy required that chase and other movement necessary for survival."
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Mmm, not quite. Fat has many functions including providing warmth and nutrients in a starvaion mode. That makes it a valuable commodity to the body, ESPECIALLY when under stress i.e aerobic type training and/or being hungry. And the muscles biological function is not entirely to move the body -- not to mention the tendons and ligiments come into play in a big way here. However, type II muscle fibers (the kind you want) are designed for short moments of exertion i.e. lifting weights or killing the prey for food.
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"FS: The fact that muscle burns faster does NOT suggest that it is burned first."
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This is where we have to agree to disagree.
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"FS: Again, my initial question still stands for anyone who can answer it...
Why do I not lose weight that corresponds to muscle loss (600 calories per pound) when I exercise?"
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Can you re-phrase that? I'm not sure what you're getting at here.
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"FS: Nelson, an explanation for that will suffice for me, and I will leave this thread alone after that. I cannot make my point any clearer, and I see that I have not convinced you on this issue...so be it."
"FS: I just want to understand how you account for the preservation of actual body tissue (regarless of what that tissue is) in accordance to my question.
600 calories per pound, I burn 5000 calories, and yet, I am not 8 pounds lighter.
Explain."
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Because you have a fuel source!!!
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"FS: Peace. It is a fun debate."
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Yes, it was. Tiring though. But this is what it's all about. This is a classic example of somethng that members can read and have a much better understanding of the issue. Or, they can concur with the infantile rantings of JA and others. But anyone who folows a fool can only aspire to be a fool themselve.
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fukkenshredded:
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Well...I will ssume that you have studies and experience to support your position here and that you are just too tired to post them (including those documentations of your 'dozens of people' and their results)...
...that being said, here are a few relevant studies, I actually have thirty eight that I have read through and all of which support my postition, but anyway, here are some for anyone's perusal:
E. F. Coyle, A. R. Coggan, M. K. Hemmert, R. C. Lowe, and T. J. Walters
Substrate usage during prolonged exercise following a preexercise meal
J Appl Physiol 59: 429-433, 1985.
. L. Johnson and G. J. Bagby
Gluconeogenic pathway in liver and muscle glycogen synthesis after exercise
J Appl Physiol 64: 1591-1599, 1988. [
H. E. Koubi, D. Desplanches, C. Gabrielle, J. M. Cottet-Emard, B. Sempore, and R. J. Favier
Exercise endurance and fuel utilization: a reevaluation of the effects of fasting
J Appl Physiol 70: 1337-1343, 1991. ]
A. Bonen, S. A. Malcolm, R. D. Kilgour, K. P. MacIntyre, and A. N. Belcastro
Glucose ingestion before and during intense exercise
J Appl Physiol 50: 766-771, 1981. ]
M. T. Falduto, S. M. Czerwinski, and R. C. Hickson
Glucocorticoid-induced muscle atrophy prevention by exercise in fast-twitch fibers
J Appl Physiol 69: 1058-1062, 1990.
Pietro Galassetti, Stephnie Mann, Donna Tate, Ray A. Neill, David H. Wasserman, and Stephen N. Davis
Effect of morning exercise on counterregulatory responses to subsequent, afternoon exercise
J Appl Physiol 91: 91-99, 2001. ]
A. Robergs, D. R. Pearson, D. L. Costill, W. J. Fink, D. D. Pascoe, M. A. Benedict, C. P. Lambert, and J. J. Zachweija
Muscle glycogenolysis during differing intensities of weight-resistance exercise
J Appl Physiol 70: 1700-1706, 1991.
A. Saborido, J. Vila, F. Molano, and A. Megias
Effect of anabolic steroids on mitochondria and sarcotubular system of skeletal muscle
J Appl Physiol 70: 1038-1043, 1991.
I can only assume that Nelson has some studies to post as well, and that he actually will present some scientific data when he gets the time.
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NM:
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Aw, just when I thought we were all getting along, I sense a passive aggressive sarcasm in your post FS.
I said this when I first came on this board and I'll say it again. I am not going to play the "I can site more references than you can" game. First of all I can't cut and paste onto the board with my servor and secondly , if I could, I wouldn't - for two reasons. One, I'd be spending all day tracking the shot down and two, just because a reference exists doesn't mean it's right. We'd have to debate each one individually and as I've already shown man of them are flawed and I believe went beyond the call of duty here to explain in detail what was flawed and why. And then you pull this shit. Very dissapointing.
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Phaeton:
"NM: I say our survival mechanism is exactly why we burn muscle. Muscle requires less energy since each unit is only 4 calories whereas fat is 9 calories. Also, muscle is heavier than body fat. If the mode is survival, or more specifically, the need to keep moving, what makes more sense to drop? Something lighter or something heavier? And what makes more sense to use? Something that requires more energy or less? You see -- it's simple logic, and the body which is designed for survival can only operate in such a manner. It doesn't give a shit what you want to look at."
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That makes no sense. In order to survive we use a less efficient feul, protein, at the expense of our locomotion?
Muscle(protein) produces 4cal/g when oxidized.
Fat provides 9cal/g when oxidized.
This means that fat is a MORE EFFICIENT substrate to use than muscle.
and muscle is not heavier than fat. Wieght is constant. 1kilo of fat wieghs the same as 1 kilo of muscle wieghs the same as 1 kilo of glucose. They all whey 1 kilo. And for that 1 kilo fat produces more than twice the enrgy.
Thats why fat is the choice for energy. More bang for the buck without the expense of locomotion.
...The body operates in the manner it is told by the mind...but thats another thread.
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NM:
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One square inch of muscle weighs more than one square inch of fat.
Stick around a while. Read. Ask questions. Know what you're talking about before posting.
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Phaeton:
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I have a little knowledge in the area
...and thats a greater density, not wieght.
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NM:
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Saying something has greater density is the same as saying it weighs more jesusfuckingcrist.
This is so typical of someone who has nothing to say and no point to make -- arguing somantics
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fukkenshredded:
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I do not know how to highlight and repost your words, but take a look at the following that you said in post #78:
"So...WHERE ARE THE STUDIES???
All I've seen so far is a bunch of cut and paste opinions. Just quoting someone else doesn't make it correct. I've been quoted too you know. It seems that some peoples inellects dont grasp this. They see a post, and their immediate reaction is; HE WINS!
Where are the studies? One guy contradicted himself by saying that training when energy levels are low is catabolic. Well, a lot of people's energy levels are low in the morning.
The NFPT said to consume a SMALL meal before training. (I agree)
And the last study (the only one) shwed that there was less catabolism when the rats were given whey protein before exercise.
WHERE ARE THE STUDIES PROVING YOUR POINT?!? "
Remember that post, Nelson?
Well, I simply gave you the studies. Now you think
I am being aggressive?
Sir, I can dessicate your argument with your own words quite easily. I have chosen to present my side without insulting you in any way shape or form.
Your answers to my questions are provably wrong, and again, you have yet to provide YOUR OWN DATA THAT YOU CLAIM YOU HAVE RECORDED, but you accuse me of being aggressive.
The reason I sound so persuasive here is because I am right.
Now, let's illustrate this point with just a couple of your answers here. You suggest that the reason that I do not lose 8lbs with a 5000 calorie expenditure is because I have a fuel source.
CORRECT.
Guess what that fuel source is if I am in a fasted state?
We have already shown that glucose levels are in a state of homeostasis, so it isn't there, and we have shown that muscle glycogen stores are preserved in a fasted state during exercise, so it isn't there either.
WHAT IS YOUR ANSWER.
Again, if it is coming from muscle, I would lose eight to ten pounds.
If it is coming from carbs, I would need full glycogen stores to account for such an expenditure, but I am fasted.
Not to mention, the body stores carbohydrates as what...you got it, FAT.
And there is where it comes from.
I am sorry that posting studies THAT YOU ASKED FOR has offended you, but it is my suspicion that your are actually embarassed more than offended.
For a published person you have preovided NOTHING in terms of documentation. NOTHING. You say my studies are flawed and irrelevant. Even if that is true, I have taken the time to post them, dissect them, and reference my claims.
Remember your whining earlier about how everyone demanded studies from you but not from anyone else? How you always document yourself, you are published, etc.? I have YET to see a single reference from you supporting your claims. I have asked politely and made reference to this omission of documentation several times.
So, in your own words...
WHENEVER YOU'RE READY.
I gave you mine, let's see yours.
Time to abide by your own words, friend.
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Basskiller:
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Nelson, You've asked a number of times for these studies that everyone has posted and this is all you can come up with? That is what is "Very dissapointing"!
You want everyone to go and get what you yourself are not willing to get, studies that support their reasonings. Well they have and now you don't feel like debating them cause your too damn lazy to look for the ones that support your claims...
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juice authority:
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Bass, thanks for chiming in.
Don't even waste your time going there with Nelson. He's too stupid to realize how stupid he is.
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fukkenshredded:
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JA--
One thing Neslon is NOT, is stupid. Mistaken, yes. Sensitive, yes.
But he is also very intelligent and I suspect that what we are witnessing here is more an issue of embarassment and fatigue more than anything else.
He has made a couple of points, they are worth examining, they are worth debating.
His refusal to post his own documentation is not evidence of stupidity, its just evidence of embarassment and frustation. Remember, he genuinely believes his position here. After he gets over the kneejerk reaction to being disproven, he will do one of two things:
Concur, with caveats,
or post something germain that documents his position.
Of course, he could always just ignore this thread from here on out and call it too purile, or beneath him, but I doubt that he will take such a silly out. He has taken time to respond, lets give him that much.
If he keeps typing he may type something relevant, so lets wait and see what happens when he gets motivated enough to prove me wrong.
In any event, I have stated before that his input is appreciated greatly, and I am edified by debates such as this because I am able to have my own theories tested.
Nelson, you have enhanced my thinking on this issue. I do want to thank you for that. I can do without the insults, but no matter.
Anyway, you have the last word. I rest my case right here.
Out, with respect.
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NM:
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What the fuck are you talkng about?
I addressed IN DEPTH dozens of points in this thread. Like I said, NOTHING is enough for some people.
FS: THOSE WEREN'T STUDIES!!! After all was said and done, you posted REFERENCES!!!
REFERNCES ARE NOT STUDIES!
You want documentation of the people I worked with? What do you want? Should I contact these people and ask for written documentation? Should I post all the letters I've received? The endorsements of some of the most presdigious people in the industry isn't enough? This is getting beyond childish.
NEW RULE....
I will no longer respond to any thread where Juice Authority is a participant. Yes, I know. that's exactly what he wants. But I refuse to bicker with this kid. Besides his incessant heckling he is also a flagrent liar and a liar deserves no attention.
I'd still love to contribute to the board. And if someone has a question, I'll gladly answer it. Bit if JA comes on, I won't. Simple as that. I'll let the board decide what's more important. And if they think it's JA's contributions, so be it. It saves me a lot of time.
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jimwill911:
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Fukkenshredded,
Do you believe that ones bodyfat level may determine the source of the fuel (fat or muscle)? For instance, a person that weighs 170lbs with 4% bodyfat has 6.8 lbs of fat. Do you think the body might choose to utilize some muscle at these low points if you do not eat prior to cardio? If not, then it would be relatively easy to reduce even further very quickly at these low levels.
Jim
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fukkenshredded:
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Jimwill911--
As bodyfat levels decrease muscle becomes more exposed to catabolization. This is why extremely lean people need to eat prodigously to spare muscle. It is also why lean people can eat more food per pound of bodyweight than obese people and not gain weight. So yes, there is a certain point where eating prior to exercise is prudent.
When confronted with the choice of burning food or burning muscle, again, the body will choose muscle last.
Nelson is correct when he states that the body will burn muscle in some instances, and an extremely low bodyfat coupled with a fasted state is an example that would apply.
I would recommend eating prior to exercise if you are below 6%, although I cannot recommend exact nutrient ratios. Surely one would want to include protien and exclude fats...maybe something like a power bar?
That is another thread, I am guessing.
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hhajdo:
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If cardio is performed in a fasted state more fat is burned...
Here's a comparison of substrate utilization when exercise is performed after a meal vs. an overnight fast:
Energy metabolism during exercise at different time intervals following a meal.
Willcutts KF, Wilcox AR, Grunewald KK.
Department of Physical Education, Dance and Leisure Studies, Kansas State University, Manhattan 66506.
The objective of this study was to compare caloric expenditure and substrate utilization during exercise begun at different time intervals following a standard test meal or in the fasted state. Eight physically fit women (aged 21-27 years) participated in four separate exercise trials. In three trials, the subjects consumed a 940-kcal meal following an overnight fast and began exercising either 30, 60, or 90 min after the meal. In the other trial, the subjects did not consume any breakfast prior to exercising. Energy expenditure and substrate utilization were determined by indirect calorimetry during the last 23 min of a 30-min run on a treadmill at an average work load of 62% VO2max. There were no significant differences among trials when comparing the total caloric expenditures (range: 215-219 kcal). However, the subjects oxidized significantly more fat (94.3 kcal) when they exercised on an empty stomach than when they exercised 60 or 90 min after the meal (71.6 and 68.8 kcal, respectively) (P less than 0.05). It was concluded that consumption of a meal prior to exercise does not increase the energy cost of the activity for physically fit women, but it does disrupt the pattern of substrate utilization, reducing the contribution of fat as an energy source.
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Effect of physical exercise on glycogen turnover and net substrate utilization according to the nutritional state.
Schneiter P, Di Vetta V, Jequier E, Tappy L.
Institute of Physiology, Faculty of Medicine, University of Lausanne, Switzerland.
To determine the metabolic effects of a single bout of exercise performed after a meal or in the fasting state, nine healthy subjects were studied over two 8-h periods during which net substrate oxidation was monitored by indirect calorimetry. On one occasion, exercise was performed 90 min after ingestion of a meal labeled with [U-13C]glucose [protocol meal-exercise (M-E)]. On the second occasion, exercise was performed after an overnight fast and was followed 30 min later by ingestion of an identical meal [protocol exercise-meal (E-M)]. Energy balances were similar in both protocols, but carbohydrate balance was positive (42.2 +/- 5.1 g), and lipid balance was negative (-11.1 +/- 2.0) during E-M, whereas they were nearly even during M-E. Total glycogen synthesis was calculated as carbohydrate intake minus oxidation of exogenous 13C-labeled carbohydrate (calculated from 13CO2 production). Total glycogen synthesis was increased by 90% (from 47.6 +/- 3.8 to 90.7 +/- 5.4 g, P < 0.0001) during E-M vs. M-E. Endogenous glycogen breakdown was calculated as net carbohydrate oxidation minus oxidation of exogenous carbohydrate and was increased by 44% (from 35.8 +/- 5.6 to 51.7 +/- 6.6 g, P < 0.004) during E-M. It is concluded that exercise performed in the fasting state stimulates glycogen turnover and fat oxidation.
Protein catabolism during exercise depends on initial muscle glycogen levels, so maybe taking a whey shake before cardio like in that rat study would be optimal:
Effect of initial muscle glycogen levels on protein catabolism during exercise
P, W. R. LEMON AND J. P. MULLIN
Biodynamics Laboratory, University of Wisconsin, Madison, Wisconsin 53706
LEMON, P. W. R., AND J, P. MULLIN. Effect of initial muscle glycogen levels on protein catabolism during exercise.
J. Appl. Physiol.: Respirat. Environ. Exercise Physiol. 48(4): 624-629, 1980.-
Serum urea increases with exercise duration suggest prolonged exercise may be analogous to starvation where protein catabolism is known to occur. The purpose of this investigation was to alter muscle glycogen levels and to study the effect on protein catabolism. Six subjects (27-30 yr) pedaled a cycle ergometer for 1 h at 61% v02 max (mean 902 = 2.33 & 0.7 L/min)
1) after CHO loading (CHO,) and
2) after CHO depletion (CHOD).
The following urea N measures were made: pre-exercise serum and urine, exercise serum and sweat (15min serial samples), and serum and urine during 240 recovery min.
Results demonstrated that 1) exercise serum urea N increased in CHOn attaining significance (P < 0.01) at 60 min; 2) serum urea N increases continued into recovery at all measurement points of CHOD (P < 0.01) and at 240 min of CHOI, (P < 0.05);
3) sweat urea N increased X&&fold (CHOKE) and 65.6-fold (CHUL) (P < 0.05). Calculations indicate that CHOr:, sweat urea N excretion was equivalent to a protein breakdown of 13.7 g per hour or 10.4% of the total caloric cost.
It was concluded that protein is utilized during exercise to a greater extent than is generally assumed and that under certain conditions protein carbon may contribute significantly to exercise caloric cost.
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NM:
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I'm familiar with the study hjdo posted. It too was not conducted in an biased fashion. I'd elaborate, but true to my word, I'll will not debate in any forum where JA is allowed to participate. For more info, either PM me or start a new thread. My apologies to the members for the inconvenience.
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jboldman:
"NM: Okay, let's put the effectiveness or non effectiveness of cardio aside for a moment:
Doing ANY exercise on an empty stomach will not burn more fat. It is biologically impossible.
If you don't mind it, fine.
If you like it, fine.
But it will NOT burn more fat than if you train on a full stoach, or a half full stomach.
But it won't be the final word for a long time. Myths die hard."
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I guess that all those exercise physiologists that conducted all those experiments that found that exercise in a fasted state preferentially burns fat as a substrate must be wrong. Man, i try, i really try nelson but when you come out and make statements that are JUST PLAIN WRONG it really goes to your dredibility. Much of what you say i agree with but making statements like that really go to your credibility overall. It does not make any difference how many professional bbrs like you or how many ebooks you have written or how many articles you have writtne, i just wonder if if yourealize how foolish it makes youlook when you state something that is so patently false.
jb
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NM:
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Jboldman, So you agree with much of what I say but I'm just plain wrong? Hmmm.
Bro, you're falling into the same trap as so many people of these boards. They think of themselves as progessive thinkers yet they only see what they want to see. A reference is not a study and a study is not proof.
Only two actual studies were provided on this thread and both were flawed in the way they were conducted yet some people refuse to recognize or even acknowledge that fact.
Another point that everyone is too busy beating themselves on the chest to see is the COMPARISON over the long term between two groups of people -- one who exercised on a regular basis on an empty stomach, and another who did an equal amount of exercise with an equal caloric intake yet did so after a small meal. I say whatever difference there may be is negligable. I've offered what I belive to be insight and reason to that belief and have not seen a shread of evidence to contradict it -- only a bunch of cut and paste speculations and two studies conducted once on a few people who fasted for over 24 hours. You see what I'm saying here?
But hey, JA says case closed and that appears to be good enough for everyone. Change the word "case" to "minds" and the statement is pretty accurate.
At any rate, I'm not going to debate any specifics because as mentioned, JA will just shit all over it for no other reason other than that's what he does. And curiously, people are okay with it. Interesting.
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jboldman:
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The hell with ja, i am not ja. How many studies do you want before you believe me? Actually there very well might be a middle ground here. I among others now eat a small protein only(i suppose you could add fat that seems counterproductive) meal about 30-60 min's before cardio after reading a study that showed not only increased fat burning but also muscle increase after cardio. I will sttae that it i was a rat study and it was done using a particular blend of protein(alpha-lactoalbumin) which as you know is a constituent of whey but not as high as the study used. I have in fact obtained some ala protein and mixed it up in the recommended proportion and now use it prior to my cardio in an otherwise fasted state. It "seems" to work better but that is just anecdotal.
So perhaps we can seek a middle ground based on studies and common sense(it does seem to make sense that adding some protein prior to exercise would be beneficial adding to the amino acid pool in the body.
I would be glad to post the study if you are interested.
jb
btw, i appreciate the tone of your response, i never have any problem agreeing to disagree.
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NM:
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You'd be glad to post a study that suggests ingesting whey improved permormance and increased fat loss? Dude, if you do that you're agreeing with me. Sometimes I wonder if people even know what they're arguing or if they're more interested in just being a part of a mob.
It's funny. One week, I'm a genius. The next week, I'm a bum. I'm neither. But that's the way a mob thinks. And make no mistake about it. All it takes is one person to to yell "WITCH" and the next thing you know, someone's starting a fire.
Hell, even JA has praised me, then dissed me, then praised me, then dissed me. It all depends on the trend of the moment. But truth and logic know no trends. They are what they are. Some will see that. Others never will.
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jboldman:
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you are incredible! Perhaps being a writer makes taking literary license second nature to you. I am NOT agreeing with you, it does not take a rocket scientist to see the difference between eating a full meal of say 30/30/40 and then exercising as opposed to , say, taking a scoop of protein powder that has been blended to increase the ala protein fraction that results in muscle growth and improved fat loss in "rats". We are talking very low to no carbohydrates here and we are talking rats. I was leaving to door open to a specific area of research as opposed to your blanket generalizations which have been proven over and over again to be false. Listen carefully, saying that low to moderate intensity exercise while in a fasted state preferentially utilizes fat as an energy substrate! OK, Still listening, "if a protein meal containing an increased alpha lactalbumin fraction is ingested 30-60 minutes prior to exercising, the fat substrate utilised is increased and skeletal muscle mass is improved in a rat study. Two different things, not contradictory at all, the rats are still burning fat preferentially.
Oh, i do not believe that i mentioned performance at all. By the way when did anyone think you were a genius? There are some very bright folks on this board but what i see here hardly qualifies you for the genius title, i am thinking this is the ego breaking thru again.
jb
It is really tiring trying to reason logically with you, your ego is so big that logical reasoning seems to be impared.
I guess that brings us back to the conclusion that you are either logically impaired or very astute in your marketing of yourself getting all this free publicity.
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plornive: "Here is one way to look at it that should be addressed. It is Lyle McDonald's opinion."
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Wannabebig: Straying from nutrition for a moment and its effects on fat loss let’s look at the physical aspect of fat loss. What's your take on doing any type of morning 'cardio' on an empty stomach or performing some sort of resistance training? I believe it was Bill Phillips who revolutionized this method and it's always been a topic that's sure to spark up a good debate.
Lyle M: Oh, this should be fun, piss some readers off. For the most part (with one or two exceptions), I don't think it matters. What Phillips (and everyone else) is getting at is this: in the morning, there is a high concentration of free fatty acids in your bloodstream, because of the overnight fast, low insulin, blah, blah, blah.
Now, we've known for years that, in general, the body will burn whatever fuel is most available. Studies reliably show that when you ramp up fatty acid availability to the muscle, the muscle burns more fat.
So the logic goes: do cardio in the morning, when there are lots of fatty acids available and you will burn more fat and thus lose more fat.
Wannabebig: Seems like a reasonable concept.
Lyle M: And the logic is 100% sound right up until the last part of it "...thus lose more fat." A fundamental mistake that's been held by researchers, physiologists, trainers and coaches for decades is that 'burning fat during activity = fat loss'. You find the same argument in the 'do low intensity activity because you burn a greater percentage of fat' folks; they logic that burning more fat during activity = more fat loss.
The problem (well, there are many problems) is that they are focusing only on what's happening during the exercise bout. That is, they are worried only about what's being burned during the 30 minutes of activity. That's problem #1: what about the other 23.5 hours of the day? Most (but not all) studies have shown that, when you look at total fat use over 24 hours in response to activity, the body will figure it out. For example, if you burn more fat during exercise, you tend to burn less fat the rest of the day; if you burn more glycogen during exercise, you burn more fat the rest of the day. Over 24 hours, it balances. At least two studies have shown (and note that this wasn't in bodybuilders or lean folks) that as long as the calorie burn during activity is the same, fat loss is the same. They had folks exercise at either a low or high intensity for something like 70 or 35 minutes (calorie burn was identical in either case). Fat loss was the same over the course of the study.
Wannabebig: But what about the other side to this?
Lyle M: Now hold on, some studies actually support the opposite. Studies on interval training have shown greater fat loss with the intervals, even though fewer calories (and far less fat) are being burned. What's the reason? There are a few reasons actually. The first is that there is a period after exercise where your body continued to burn calories. Researchers usually call this excess post-exercise oxygen consumption (or EPOC). The EPOC after low-intensity fat burning activity is tiny. You may burn a few calories afterwards and that's it. So what you burn during the activity is pretty much it. After high intensity exercise (even though you're burning mainly glycogen and very little fat), you get a much larger EPOC. In addition, most of those calories come from fat stores. Bill's brother Shawn had been on the intervals for fat loss crusade for a few years now.
Empirically, you can also ask yourself who are the leanest athletes. Usually, it's sprinters (bodybuilders come in a close second). These guys rarely run more than 20-30 seconds, they are never in their fat burning zone. By the logic that you must 'burn fat to lose fat', these guys should be fat. They're not because what really matters is how many calories you're burning during the day (and if there is a deficit). And that's just problem #1.
Another problem is that, you actually end up releasing far more fatty acids in the morning than your body can burn in the first place. That is, beyond a certain point, having more fatty acids in the bloodstream doesn't increase fatty acid burning, because the limitation is now in how fast the muscle can actually burn them up. Fatty acid availability isn't the problem under most circumstances.
If I wanted to be a real jackass, I could even make an argument against morning cardio on the following argument: intensity. As above, fat loss is related to calorie burn; calorie burn is going to be related to intensity (or duration). First thing in the morning, with lowered blood glucose and no food, it's hard for most people to do their cardio at a very high intensity. So their calorie burn is going to be low. I mean go into any gym, the morning cardio folks are usually plodding along, they may be burning a whopping five cal/minute.
Wannabebig: That's an understatement.
Lyle M: So over 30 minutes that's a whole 150 calories. Yippee. Intervals first thing in the morning on an empty stomach (what Shawn Phillips recommends) are even harder. You're going in with lowered blood glucose and you're going to try to do a max workout? Good luck.
Now, before I move on to one of the exceptions to all of the above, lemme say this: except for my slightly weird anti-morning cardio argument, I don't think it's going to *hurt* anything to do cardio first thing in the morning. I'm not convinced it's going to *help* or enhance fat loss, but it's not going to hurt. I suspect that much of the reason that morning cardio 'works', is the same reason other things work: it develops a psychological pattern. Again, as much as most people don't want to believe it, most things work for psychological as much as physiological reasons. That's certainly the case for much of CKD/Bodyopus types of diets. I believed in it, it controlled my carb cravings (by allowing them at only certain times) and I stuck to it better. Psychology.
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NM:
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JA, Just as I thought. As soon as you're proven a liar, suddenly you want to change the subject. Everyone knows you ruined this thread, and to those who don't , there's nothing I can, or care to say.
And by the way -- an apology isn't something that you give when it suits you for the moment and you can change whenever the whim hits you. Some day when you grow up you'll realize that.
I'm done too.
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juice authority:
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Nelson, WTF are you talking about?? Proven liar?? God, your antics get old. If you read back through this thread you'll find some of the content I contributed set the stage for the discussion that ensued. You just can't handle being proven wrong as you've been not only by myself but by FS, poantrex, RADAR, riptorn, v shape, JG1, satchboogie, flexed1, sk*, T Bone, Phaeton, hhajdo, basskiller and now jboldman. Not to mention a whole slew of other people over at Anabolic Fitness:
Fonz...I wonder if you'd read this... - Topic Powered by Infopop
The relevant parts of the cardio debate... - Topic Powered by Infopop
That's a lot of people Nelson. I haven't seen too many supporters of your position on this thread at all. Two people at tops (Transporter and someone else), both of which had very little to offer in the way of evidence other than to parrot what you said. If people buy your book after reading through this thread they need to have their head examined!!!
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__________________
"No researcher has made a human bigger than a dumb-shit bodybuilder."---Dan Duchaine (12/18/97)
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