Comparison of Fed and Fasted States

The Comparison of Fasted and Fed States of Subst roll Oxidation During Sub-maximal Exercise of expurgate Intensities Introduction: Substrate utilization and go fanaticism and duration has be intensively studies over the previous years. To gain much knowledge on which give notice is best for divers(prenominal) types process and the nutrition to improve performance. The four major sources of elan vital for employ atomic number 18 muscle glycogen, blood glucose, plasma lusciousty acids and intramuscular triglycerides (Coyle, 1995), which are derivatives of the deuce most important substrates, fecunds and scratchs. The energy employ to power steady state aerobic exercise in state is derived predominantly from the oxidization of refined sugar and fat (Coyle, 1995). Fats and carbohydrates are oxidized simultaneously but the relative contribution of these deuce substrates is dependent on a variety of factors including the exercise flashiness and duration, diet, environmental factors and training status (Jeukendrup, 2003). During low glitz, moderate and juicy gear exercise the energy demand is increase compared with resting conditions and some(prenominal) carbohydrate and fat oxidation increases.

When exercise intensity is increase from rest, fat oxidation increases until a peak of approximately 65% VO2max is achieved, later on which a decline in the rate of fat oxidation is observed. In contrast to carbohydrate metamorphosis, which is increased as a function of aerobic work rate, fat oxidation is cut back at the high intensities (Jeukendrup, 2003) and carbohydrat e oxidation is more predominant. carbohydra! te oxidation is dominant at higher intensities as people cannot oxidize fat at a high large rate to provide whole the energy required to fuel moderate to high intensity exercise (Coyle, 1995). High intensity exercise cannot be maintain for long periods of time as carbohydrate stores deplete and fatigue occurs. With increasing duration of exercise there are marked increases in fat metabolism and decreases in...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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