THE EFFECTS OF CARBOHYDRATE LOADING ON REPETITIVE JUMP SQUAT POWER PERFORMANCE

@article{Hatfield2006THEEO,
  title={THE EFFECTS OF CARBOHYDRATE LOADING ON REPETITIVE JUMP SQUAT POWER PERFORMANCE},
  author={Disa L. Hatfield and William J. Kraemer and Jeff S. Volek and Martyn R. Rubin and B Grebien and Ana L. Gómez and Duncan N French and Timothy Paul Scheett and Nicholas A Ratamess and Matthew J. Sharman and Michael R. McGuigan and Robert Usher Newton and And Keijo H{\"a}kkinen},
  journal={Journal of Strength and Conditioning Research},
  year={2006},
  volume={20},
  pages={167–171}
}
The beneficial role of carbohydrate (CHO) supplementation in endurance exercise is well documented. However, only few data are available on the effects of CHO loading on resistance exercise performance. Because of the repetitive use of high-threshold motor units, it was hypothesized that the power output (power-endurance) of multiple sets of jump squats would be enhanced following a high-CHO (6.5 g CHO kg body mass−1) diet compared to a moderate-CHO (4.4 g CHO kg body mass−1) diet. Eight… 

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References

SHOWING 1-10 OF 31 REFERENCES

Carbohydrate supplementation attenuates muscle glycogen loss during acute bouts of resistance exercise.

TLDR
The results of this investigation indicate that the consumption of a CHO beverage can attenuate the decrease in muscle glycogen associated with isotonic resistance exercise but does not enhance the performance of isokinetic leg exercise.

The effects of supplemental carbohydrate ingestion on intermittent isokinetic leg exercise.

TLDR
The data from this investigation indicate that the use of CHO supplementation during isokinetic leg exercise allows for the performance of more work.

Influence of weight training exercise and modification of hormonal response on skeletal muscle growth.

Improvements in exercise performance: effects of carbohydrate feedings and diet.

TLDR
It is suggested that, under conditions when CHO stores are less than optimal, exercise performance is enhanced with the ingestion of 45 g of CHO 5 min before 1 h of intense cycling.

Carbohydrate supplementation spares muscle glycogen during variable-intensity exercise.

TLDR
It is suggested that CHO supplementation can enhance prolonged continuous variable-intensity exercise by reducing dependency on muscle glycogen as a fuel source.

High-intensity exercise performance is not impaired by low intramuscular glycogen.

TLDR
It is concluded that short-term, high-intensity exercise performance of glycogen depleted leg extensors is not impaired.

High-intensity exercise and muscle glycogen availability in humans.

TLDR
It is suggested that muscle glycogen availability can affect performance during both short-term and more prolonged high-intensity intermittent exercise and that with repeated exercise periods as short as 6 s, there can be a relatively high aerobic contribution.

Carbohydrate feedings before, during, or in combination improve cycling endurance performance.

TLDR
Performance was improved by ingestion of carbohydrates before and/or during exercise; performance was further improved by their combination; this is probably the result of enhanced carbohydrate oxidation, especially during the later stages of exercise.

Muscle glycogen recovery after exercise measured by13C-magnetic resonance spectroscopy in humans: effect of nutritional solutions

TLDR
Glycogen synthesis was found to be significantly increased with both regimes compared to a zero-caloric placebo diet, but no significant difference in glycogen resynthesis was found between the CHO-only diet and the one supplemented by proteins and arginine.

Muscle glycogenolysis during differing intensities of weight-resistance exercise.

TLDR
Skeletal muscle glycogen metabolism was investigated in eight male subjects during and after six sets of 70% one repetition maximum (1 RM, I-70) and 35% 1 RM (I-35) intensity weight-resistance leg extension exercise and indicated that when external work was constant, the absolute amount of glycogenolysis was the same regardless of the intensity of resistance exercise.