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Medical Forum / Diseases and Disorders / Diabetes / January 2006Anerobic vs. aerobic
Can anyone explain why I would be told that you can not loose weight doing anerobic exercise? Does aerobic burn fat while anerobic does not burn fat? >Can anyone explain why I would be told that you can not loose weight >doing anerobic exercise? Does aerobic burn fat while anerobic does not >burn fat? IT matters not. One process converts sugar into water and CO2 (aerobic), if you cannot produce enough energy that way, then some sugars are converted to lactic acid. At a later time the Lactic acid is either converted back to sugar, or burned the rest of the way (Krebb's Cycle IIRC). Either one is going to convert fat to sugar if there isn't enough sugar available. > >Can anyone explain why I would be told that you can not loose weight > >doing anerobic exercise? Does aerobic burn fat while anerobic does not [quoted text clipped - 7 lines] > Either one is going to convert fat to sugar if there isn't enough > sugar available. Ummm, not exactly. It matters a great deal in that aerobic metabolism directly "burns" free fatty acids [which are liberated from the fat stored throughout your body], while anaerobic metabolism burns only glusoce(/glycogen). Both aerobic and anaerobic metabolism burn their fuels down to the pyruvic acid stage, but to proceed with the Krebs cycle you need [drumroll] oxygen. So, in answer to the OP, yes, the aerobic system burns fat (free fatty acids) while the anaerobic system burns glucose (i.e., doesn't burn fat). Bill -- Bill Peckenpaugh frbill@priest.com http://www.plimu.com/bill.htm (Boring me...) http://www.plimu.com/daniel.htm (The Amazing Daniel!) > It matters a great deal in that aerobic metabolism directly "burns" free > fatty acids [which are liberated from the fat stored throughout your [quoted text clipped - 4 lines] > fatty acids) while the anaerobic system burns glucose (i.e., doesn't burn > fat). Not telling the whole story...aerobic exercie will still burn glucose. If combined with low calories they will both burn fat too. > > It matters a great deal in that aerobic metabolism directly "burns" free > > fatty acids [which are liberated from the fat stored throughout your [quoted text clipped - 7 lines] > Not telling the whole story...aerobic exercie will still burn glucose. If > combined with low calories they will both burn fat too. You are confusing "aerobic exercise" with aerobic metabolism. Aerobic exercise promotes optimal aerobic metabolism, but it's entirely possible to do "aerobics" so hard that you slip into anaerobic metabolism, or so apathetically that you remain below optimal aerobic metabolism. Aerobic respiration directly metabolizes free fatty acids. Anaerobic respiration metabolizes glucose. Most exercise results in muscle cells using both metabolic pathways, since you can't usually hit the "sweet spot" of maximum aerobic respiration without either becoming out of breath (and losing optimal aerobic respiration), or exercising at sub-aerobic levels. Bill -- Bill Peckenpaugh frbill@priest.com http://www.plimu.com/bill.htm (Boring me...) http://www.plimu.com/daniel.htm (The Amazing Daniel!) > Can anyone explain why I would be told that you can not loose weight > doing anerobic exercise? Does aerobic burn fat while anerobic does not > burn fat? Maybe you should ask the person who told you this. I do mainly anaerobic exercise (weights) and am losing weight. I am building muscle and the more muscle you have, the more calories you burn.  SignatureType 2 http://users.bestweb.net/~jbove/ > Maybe you should ask the person who told you this. I do mainly > anaerobic exercise (weights) and am losing weight. I am building > muscle and the more muscle you have, the more calories you burn. Exactly. For balance doing both is good, but anaerobic exercises build strength and stamina, always good. > Can anyone explain why I would be told that you can not loose weight > doing anerobic exercise? Does aerobic burn fat while anerobic does not > burn fat? non-sense....who told you this crap ? Basically...the difference is that aerobic exercise requires Oxygen, the other doesn't...either will burn whatever fuel is available. Typically the body burns fuel preferentially, stored glucose first. Fat is burned when stored glucose is depleted and there's nonnew coming in. > > Can anyone explain why I would be told that you can not loose weight > > doing anerobic exercise? Does aerobic burn fat while anerobic does not [quoted text clipped - 4 lines] > Basically...the difference is that aerobic exercise requires Oxygen, the > other doesn't... That much is correct. > either will burn whatever fuel is available. Typically the > body burns fuel preferentially, stored glucose first. Fat is burned when > stored glucose is depleted and there's nonnew coming in. And that is incorrect. The aerobic metabolic pathway burns fatty acids. Period. The anaerobic metabolic pathway burns glucose. Period. Both metabolize their respective fuels to pyruvic acid, at which point the PA enters the Krebs cycle (if there's oxygen available) to be further metabolized. *Cells* can switch from one fuel to another, depending on whether one running out (like a marathon runner "hitting the wall" when glycogen stores are exhausted: the runner doesn't simply collapse, because free fatty acids continue to be metabolized aerobically). You certainly can lose weight doing only nonaerobic exercise, but you will generally lose weight faster (and you will deplete fat stores directly) by doing aerobic exercise. Anaerobic exercise is good for toning muscle and building strength, but is isn't good for quickly losing fat. Bill -- Bill Peckenpaugh frbill@priest.com http://www.plimu.com/bill.htm (Boring me...) http://www.plimu.com/daniel.htm (The Amazing Daniel!) > You certainly can lose weight doing only nonaerobic exercise, but you > will generally lose weight faster (and you will deplete fat stores > directly) by doing aerobic exercise. Anaerobic exercise is good for > toning muscle and building strength, but is isn't good for quickly losing > fat. BS...what happens to all that unsued glucose then ?? It gets stored as FAT ! > > You certainly can lose weight doing only nonaerobic exercise, but you > > will generally lose weight faster (and you will deplete fat stores [quoted text clipped - 3 lines] > > BS...what happens to all that unsued glucose then ?? It gets stored as FAT And to burn fat (as well as pyruvic acid in the Krebs cycle) requires oxygen, because fatty acids are metabolized aerobically. Is there some part of this simple fact that confuses you? Bill -- Bill Peckenpaugh frbill@priest.com http://www.plimu.com/bill.htm (Boring me...) http://www.plimu.com/daniel.htm (The Amazing Daniel!) >> > You certainly can lose weight doing only nonaerobic exercise, but you >> > will generally lose weight faster (and you will deplete fat stores [quoted text clipped - 12 lines] >http://www.plimu.com/bill.htm (Boring me...) >http://www.plimu.com/daniel.htm (The Amazing Daniel!) ANYWAY, I think you guys are not answering this persons question. Many people seem to think there are fat loss benefits for using both Aerobic and Anaerobic exercise. I have personally used both and have seen fat loss with this combo. I benefit personally from it for not only fat loss but for stamina, speed and mixing my routines up a little..Also including some Fartlek training doesnt hurt. Im not an expert, but perhaps if you answered the question in English(laymans terms) maybe they will be more inclined to agree with what you are saying as opposed to probably thinking you are a know it all. :-) |
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