Carbohydrate feeding during prolonged strenuous exercise can delay fatigue.

@article{Coyle1983CarbohydrateFD,
  title={Carbohydrate feeding during prolonged strenuous exercise can delay fatigue.},
  author={E. Coyle and J. Hagberg and B. Hurley and W. Martin and A. Ehsani and J. Holloszy},
  journal={Journal of applied physiology: respiratory, environmental and exercise physiology},
  year={1983},
  volume={55 1 Pt 1},
  pages={
          230-5
        }
}
  • E. Coyle, J. Hagberg, +3 authors J. Holloszy
  • Published 1983
  • Medicine
  • Journal of applied physiology: respiratory, environmental and exercise physiology
This study was undertaken to determine whether carbohydrate feeding during exercise can delay the development of fatigue. Ten trained cyclists performed two bicycle ergometer exercise tests 1 wk apart. The initial work rate required 74 +/- 2% of maximum O2 consumption (VO2 max) (range 70-79% of VO2 max). The point of fatigue was defined as the time at which the exercise intensity the subjects could maintain decreased below their initial work rate by 10% of VO2 max. During one exercise test the… Expand
Muscle glycogen utilization during prolonged strenuous exercise when fed carbohydrate.
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It is concluded that when they are fed carbohydrate, highly trained endurance athletes are capable of oxidizing carbohydrate at relatively high rates from sources other than muscle glycogen during the latter stages of prolonged strenuous exercise and that this postpones fatigue. Expand
Effectiveness of Carbohydrate Feeding in Delaying Fatigue during Prolonged Exercise
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Although carbohydrate feedings prevent hypoglycaemia and are readily used for energy during mild exercise, there is little data indicating that feedings improve endurance during low intensity exercise. Expand
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Performance times were identical for M and C, and there was no difference in the self-selected speeds, however, blood glucose concentration was higher in C during the first 20 km of the 30-km run. Expand
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It is concluded that CHO ingestion improves maximal exercise performance after prolonged exercise and increases glucose levels at rest and immediately after submaximal exercise. Expand
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Data indicate that a single carbohydrate feeding late in exercise can supply sufficient carbohydrate to restore euglycemia and increase carbohydrate oxidation, thereby delaying fatigue. Expand
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There is an increase in the muscle efficiency parameters, RPP, METs and VO2max values following ORS ingestion and exercise by bicycle ergometry, in the present study. Expand
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The data suggest that carbohydrate ingestion may increase endurance capacity, at least in part, by improving muscle energy balance and there was a small but significant increase in muscle inosine monophosphate levels in both trials. Expand
No effect of carbohydrate feeding on glycogen synthase in human muscle during exercise.
TLDR
It is concluded that under the present conditions CHO feedings do not alter the exercise-mediated changes in GSF activity, and the increase in G SF during exercise is attributed at least in part to the decrease in muscle glycogen (which increases the suitability of GS as substrate for GS phosphatase). Expand
Carbohydrate supplementation spares muscle glycogen during variable-intensity exercise.
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It is suggested that CHO supplementation can enhance prolonged continuous variable-intensity exercise by reducing dependency on muscle glycogen as a fuel source. Expand
Timing and method of increased carbohydrate intake to cope with heavy training, competition and recovery.
  • E. Coyle
  • Medicine
  • Journal of sports sciences
  • 1991
TLDR
This paper has proposed extraordinary dietary practices which generally advocate high carbohydrate intake at all times before, during and after exercise to have as much carbohydrate in the body as possible during the latter stages of prolonged intense exercise. Expand
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