Just did my Prepare shake now time to go build my legs up! With another Beastly workout. Why cause its the biggest muscle and it eats a lot of FAT!!! I SAID IT EATS ALOT OF FAT!!!!!!! You all READY for some schoolin?? Great way to help burn FAT!!! And to KICK up Metabolism!!! How it works>>>>SKIP to last part if need too>> With moderate exertion, carbohydrate undergoes aerobic metabolism. Under these conditions, oxygen is used and the carbohydrate goes through both the Embden-Meyerhoff pathway of a n a e robic metabolism, in which glucose is converted to lactate; but prior to the conversion of pyruvate to lactate, pyruvate enters the K rebs Cycle in the mitochondria, where oxidative phosphorylation results in a maximum extraction of energy f rom each molecule of glucose. If there is plenty of oxygen available and the exercise is of low to moderate intensity, then the pyruvate from glucose is converted to carbon dioxide and water in the mitochondria. A p p roximately 42 ATP equivalents can be produced from a single glucose molecule, compared to only 4 ATP with anaerobic metabolism. A muscle cell has some amount of ATP floating around that it can use immediately, but the amount is not very much–only enough to last for about three seconds. To replenish the ATP levels quickly, muscle cells contain a high-energy phosphate compound called creatine phosphate. The phosphate group is removed from creatine phosphate by an enzyme called creatine kinase, and is transferred to ADP to form ATP. The cell turns ATP into ADP, and the phosphagen rapidly turns the ADP back into ATP. As the muscle continues to work, the creatine phosphate levels begin to decrease. Together, the ATP levels and creatine phosphate levels are called the phosphagen system. The phosphagen system can supply the energy needs of working muscle at a high rate but for only eight to 10 seconds Aerobic metabolism supplies energy more slowly than does anaerobic metabolism, but can be sustained for long periods of time (i.e., up to five hours). The major advantage of the less-efficient anaerobic pathway is that it more rapidly provides ATP in muscle by utilizing local muscle glycogen. Other than PCr, this is the fastest way to resupply muscle ATP levels. Anaerobic glycolysis supplies most energy for short-term intense exercise that ranges between 30 seconds to two minutes. The disadvantage of anaerobic metabolism is that it cannot be sustained for long periods, since the accumulation of lactic acid in muscle decreases the pH and inactivates key enzymes in the glycolysis pathway, which leads to fatigue. The lactic acid released from muscle can be taken up by the liver and converted to glucose again (the Cori Cycle), or it can be used as a fuel by the cardiac muscle directly or by less-active skeletal muscles away from the actively contracting muscle. Muscle glycogen is the preferred carbohydrate fuel for events lasting less than two hours for both aerobic and anaerobic metabolism. Depletion of muscle glycogen causes fatigue and is associated with a build-up of muscle molecule). Therefore, for a performance athlete it is important to maintain the efficiency edge provided by carbohydrate as long as glycogen is available in the muscles. Under usual exercise conditions, protein only provides about 6% of energy needs. With high-intensity endurance exercise, the production of glucose from amino acids can be significant–up to about 10% or 15% of total energy needs. The only food that provides energy for short-term, fast-paced exercise is carbohydrate, while slow, steady aerobic exercise uses all three primary fuels–but primarily, fat and carbohydrate.
Posted on: Mon, 24 Jun 2013 19:27:29 +0000
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