Athletic Endurance and your diet
February 7, 2009
The nutritive support for the muscle is necessary; and therefore, the endurance factor of the muscles depends most on the amount of glycogen already stored in the muscles prior to the exercise period. The endurance is largely enhanced by a diet rich with high carbohydrates.
When we talk about the need for high athletic results, it does not mean that it is only the carbohydrate which is required for muscles energy. It simply implies carbohydrates are preferred. In reality, there are materials, such as large amounts of fat in the form of fatty acids and acetoacetic acid and also the proteins in much less extent, which are used often by muscles for energy.
While the endurance athletic events even under the best conditions lasting more than 4 to 5 hours, the glycogen stored in the muscles turn depleted and happen to be then of little further use of muscle contraction energizing. Instead, now the muscles starts depending upon glucose available to be absorbed from the gut in a limited way or upon the energy available from other sources mainly the fats; remember that the bigger part of energy (50 to 80 percent) comes from fats rather than carbohydrates during exhaustion.
All the energy from carbohydrates does not come only from the stored muscle glycogen. For many people almost the same amount of glycogen is stored in the liver compared to that in the muscles; and there can be a release of his/her glycogen into the blood in the form of glucose for taking up by the muscle as an energy source.
Of note, the glucose solution taken by an athlete for drinking during the period of athletic can enhance up to 30 to 40 percent of energy which is needed throughout the long lasting events such as that of a marathon race. This is why the muscle glycogen and blood glucose happen to be the energy nutrients of choice during intense muscle activity. Still, for a real endurance event, the fat is expected to supply energy more than 50 percent of what is required after nearly initial three to four hours.
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