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The effects of carbohydrate loading on repetitive jump squat power performance

Citation

Hatfield, DL and Kraemer, WJ and Volek, JS and Rubin, MR and Grebien, B and Gomez, AL and French, DN and Scheett, TP and Ratamess, NA and Sharman, MJ and McGuigan, MR and Newton, MR and Hakkinen, K, The effects of carbohydrate loading on repetitive jump squat power performance, Journal of Strength and Conditioning Research: The Research Journal of The National Strength and Conditioning Association, 2006 Feb, (20(1)) pp. 167-71. ISSN 1064-8011 (2006) [Refereed Article]

DOI: doi:10.1519/R-18300.1

Abstract

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 healthy men (mean +/- SD: age 26.3 +/- 2.6 years; weight 73.0 +/- 6.3 kg; body fat 13.4 +/- 5.0%; height 178.2 +/- 6.1 cm) participated in 2 randomly assigned counterbalanced supplementation periods of 4 days after having their free-living habitual diet monitored. The resistance exercise test consisted of 4 sets of 12 repetitions of maximal-effort jump squats using a Plyometric Power System unit and a load of 30% of 1 repetition maximum (1RM). A 2-minute rest period was used between sets. Immediately before and after the exercise test, a blood sample was obtained to determine the serum glucose and blood lactate concentrations. No significant difference in power performance existed between the 2 diets. As expected, there was a significant (p

Item Details

Item Type:Refereed Article
Research Division:Medical and Health Sciences
Research Group:Human Movement and Sports Science
Research Field:Exercise Physiology
Objective Division:Health
Objective Group:Health and Support Services
Objective Field:Health and Support Services not elsewhere classified
Author:Sharman, MJ (Dr Matt Sharman)
ID Code:78936
Year Published:2006
Web of Science® Times Cited:9
Deposited By:Health Sciences A
Deposited On:2012-08-08
Last Modified:2012-08-08
Downloads:0

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