Superior endurance performance with ingestion of multiple transportable carbohydrates.

@article{Currell2008SuperiorEP,
  title={Superior endurance performance with ingestion of multiple transportable carbohydrates.},
  author={K. Currell and A. Jeukendrup},
  journal={Medicine and science in sports and exercise},
  year={2008},
  volume={40 2},
  pages={
          275-81
        }
}
INTRODUCTION. [...] Key MethodMETHODS Eight male trained cyclists were recruited (age 32 +/- 7 yr, weight 84.4 +/- 6.9 kg, .VO(2max) 64.7 +/- 3.9 mL.kg(-1).min(-1), Wmax 364 +/- 31 W).Expand
Glucose-fructose enhances performance versus isocaloric, but not moderate, glucose.
TLDR
GF ingestion seems to enhance performance, relative to PL and HG, however, it is unclear whether GF improves performance versus moderate doses of glucose. Expand
Mixed drink increased carbohydrate oxidation but not performance during a 40 km time trial
Background: The present study aimed to determine whether consuming a glucose polymer (GP) and fructose would result in increased carbohydrate oxidation rates and improve 40 km time trial performanceExpand
The Ingestion of 39 or 64 g·h(-1) of Carbohydrate is Equally Effective at Improving Endurance Exercise Performance in Cyclists.
TLDR
39 and 64 g·hr-1 of CHO were similarly effective at improving endurance cycling performance compared with a 0 g·h·hr(-1) control in the authors' trained cyclists. Expand
Exogenous CHO oxidation with glucose plus fructose intake during exercise.
TLDR
It is demonstrated that ingesting moderate amounts of glucose plus fructose does not increase exogenous CHO oxidation above that of an isocaloric amount of glucose alone, and furthermore, average exogenousCHO oxidation rates during the final 90 min of exercise were not significantly different between GLU and GLU + FRU. Expand
The effect of carbohydrate gels on gastrointestinal tolerance during a 16-km run.
TLDR
Despite high CHO gel intake, and regardless of the blend (GLU vs. GLU+FRC), average scores for GI symptoms were at the low end of the scale, indicating predominantly good tolerance during a 16-km run, Nevertheless, some runners experienced serious problems, and individualized feeding strategies might be required. Expand
Impact of Post-Exercise Fructose-Maltodextrin Ingestion on Subsequent Endurance Performance
TLDR
Investigating whether consuming a combination of fructose and glucose as opposed to glucose alone during short-term recovery from exhaustive exercise would also improve subsequent pre-loaded cycle time trial (TT) performance found no differences. Expand
Carbohydrate intake and metabolism during prolonged endurance exercise
It is well accepted that CHO ingestion can improve endurance performance. However, a number of questions remain open regarding fine-tuning CHO intake recommendations during prolonged enduranceExpand
Composite versus single transportable carbohydrate solution enhances race and laboratory cycling performance.
TLDR
Ingestion of multiple transportable vs. single transportable carbohydrates enhanced mountain-bike race and high-intensity laboratory cycling performance, with inconsistent but not irreconcilable effects of gut discomfort as a possible mediating mechanism. Expand
The ingestion of protein with a maltodextrin and fructose beverage on substrate utilisation and exercise performance.
TLDR
Ingestion of an MD-fructose-protein commercial sports beverage significantly reduced peak and mean CHO(EXO) rates compared with MD+F, but did not significantly influence CHOTOT. Expand
The effects of acute carbohydrate and caffeine feeding strategies on cycling efficiency
TLDR
Car carbohydrate ingestion has a small but significant effect on exercise-induced reductions in GE, indicating that cyclists’ feeding strategy should be carefully monitored prior to and during assessment. Expand
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References

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TLDR
It is demonstrated that, when fructose and glucose are ingested simultaneously at high rates during cycling exercise, exogenous carbohydrate oxidation rates can reach peak values of approximately 1.3 g/min. Expand
Oxidation of exogenous glucose, sucrose, and maltose during prolonged cycling exercise.
TLDR
It is demonstrated that, when a mixture of glucose and sucrose is ingested at high rates during cycling exercise, exogenous CHO oxidation rates reach peak values of approximately 1.25 g/min. Expand
Influence of selected carbohydrate drinks on cycling performance and glycogen use.
TLDR
Eight well-trained male cyclists were used to determine the influence of carbohydrate feedings on exercise performance and muscle glycogen use and no differences were observed between trials in blood lactate, serum glycerol, respiratory exchange ratio, or the subjects' perception of effort. Expand
Oxidation of combined ingestion of glucose and sucrose during exercise.
TLDR
Combined ingestion of moderate amounts of glucose and sucrose during cycling exercise resulted in approximately 21% higher exogenous CHO oxidation rates compared with the ingestion of an isocaloric amount of glucose. Expand
Effects of carbohydrate ingestion on gastric emptying and exercise performance.
TLDR
The performance data showed that in all of the CHO trials, significantly more work was produced compared to the WP trial, and only the volume in the CHO-5 trial was significantly different from WP. Expand
Influence of carbohydrate dosage on exercise performance and glycogen metabolism.
TLDR
Examination of the effects of ingestion of carbohydrate (CHO) solutions of 0 (WP), 6 ( CHO-6), 12 (CHO-12), and 18 g CHO/100 ml on performance and muscle glycogen use found no differences in glycogenUse or depletion patterns between the WP and the two CHO-12 trials. Expand
Effect of carbohydrate ingestion on exercise metabolism.
TLDR
The results of this study indicate that carbohydrate ingestion does not influence the utilization of muscle glycogen during prolonged strenuous exercise. Expand
Exogenous carbohydrate oxidation rates are elevated after combined ingestion of glucose and fructose during exercise in the heat.
TLDR
Ingestion of GLU+FRUC during exercise in the heat resulted in higher exogenous CHO oxidation rates and fluid availability compared with ingestion ofGLU and reduced endogenous CHO oxidation compared with ingesting WAT. Expand
Influence of glucose and fructose ingestion on the capacity for long-term exercise in well-trained men.
TLDR
Intermittent glucose ingestion during prolonged, heavy bicycle exercise postpones exhaustion and exerts a glycogen-conserving effect in the working muscles, and fructose ingestion during exercise maintains the glucose concentration at the basal level but fails to influence either muscle glycogen degradation or endurance performance. Expand
Exogenous carbohydrate oxidation during ultraendurance exercise.
TLDR
Comparing CHO(Exo) following the ingestion of a glucose solution (Glu) or a glucose + fructose solution (2:1 ratio, Glu+Fru) during ultraendurance exercise suggests an important role for gluconeogenesis during the later stages of exercise. Expand
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