THE EFFECTS OF CARBOHYDRATE LOADING ON REPETITIVE JUMP SQUAT POWER PERFORMANCE
| Autor: | Bianca Grebien, Martyn R. Rubin, Jeff S. Volek, Keijo Häkkinen, Michael R. McGuigan, Ana L. Gómez, Duncan N. French, Timothy P. Scheett, Robert U. Newton, Nicholas A. Ratamess, Matthew J. Sharman, William J. Kraemer, Disa L. Hatfield |
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| Rok vydání: | 2006 |
| Předmět: |
Adult
Blood Glucose Dietary Fiber Male medicine.medical_specialty Movement Squat Physical Therapy Sports Therapy and Rehabilitation Animal science Endurance training Dietary Sucrose medicine Dietary Carbohydrates Plyometrics Carbohydrate loading Humans Orthopedics and Sports Medicine Lactic Acid Exercise physiology Muscle Skeletal Leg Cross-Over Studies business.industry Power performance General Medicine Crossover study Physical therapy Jump Physical Endurance business Energy Intake |
| Zdroj: | Journal of Strength and Conditioning Research. 20:167-171 |
| ISSN: | 1064-8011 |
| DOI: | 10.1519/00124278-200602000-00027 |
| Popis: | 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 |
| Databáze: | OpenAIRE |
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