Caffeine Gum and Cycling Performance
| Autor: | Megan Williamson, Edward J. Ryan, Ellen L. Glickman, Mathew D. Muller, John Gunstad, Jacob E. Barkley, Emily J. Fickes, Chul Ho Kim |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Enzyme-Linked Immunosorbent Assay Physical Therapy Sports Therapy and Rehabilitation Athletic Performance Placebo Chewing Gum Placebos chemistry.chemical_compound Oxygen Consumption Time trial Caffeine medicine Humans Orthopedics and Sports Medicine Graded exercise test Analysis of Variance business.industry Repeated measures design VO2 max General Medicine Chewing gum Bicycling Hematocrit chemistry Exercise Test Physical therapy business Cycling |
| Zdroj: | Journal of Strength and Conditioning Research. 27:259-264 |
| ISSN: | 1064-8011 |
| DOI: | 10.1519/jsc.0b013e3182541d03 |
| Popis: | The purpose of this study was to determine the most efficacious time to administer caffeine (CAF) in chewing gum to enhance cycling performance. Eight male cyclists participated in 5 separate laboratory sessions. During the first visit, the subjects underwent a graded exercise test to determine maximal oxygen consumption (V[Combining Dot Above]O(2)max). During the next 4 visits, 3 pieces of chewing gum were administered at 3 time points (120-minute precycling, 60-minute precycling, and 5-minute precycling). In 3 of the 4 visits, at 1 of the time points mentioned previously, 300 mg of CAF was administered. During the fourth visit, placebo gum was administered at all 3 time points. The experimental trials were defined as follows: trial A (-120), trial B (-60), trial C (-5), and trial D (Placebo). After baseline measurements, time allotted for gum administration, and a standard warm-up, the participants cycled at 75% V[Combining Dot Above]O(2)max for 15 minutes then completed a 7-kJ·kg(-1) cycling time trial. Data were analyzed using a repeated measures analysis of variance. Cycling performance was improved in trial C (-5), but not in trial A (-120) or trial B (-60), relative to trial D (Placebo). CAF administered in chewing gum enhanced cycling performance when administered immediately prior, but not when administered 1 or 2 hours before cycling. |
| Databáze: | OpenAIRE |
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