Perception of Breakfast Ingestion Enhances High-Intensity Cycling Performance
| Autor: | Kurt Bergin-Taylor, Reagan Dee, Jack Kay, Stephen A. Mears, Kathryn Dickinson, Lewis J. James |
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| Rok vydání: | 2018 |
| Předmět: |
Adult
Blood Glucose Male 0301 basic medicine Physical Therapy Sports Therapy and Rehabilitation Athletic Performance Placebo 03 medical and health sciences 0302 clinical medicine Time trial Animal science Dietary Carbohydrates Humans Ingestion Medicine Single-Blind Method Orthopedics and Sports Medicine Lactic Acid Food science Short duration Breakfast Cross-Over Studies business.industry High intensity 030229 sport sciences Carbohydrate Placebo Effect Bicycling Rest period 030104 developmental biology Exercise Test Perception business Cycling |
| Zdroj: | International Journal of Sports Physiology and Performance. 13:504-509 |
| ISSN: | 1555-0273 1555-0265 |
| DOI: | 10.1123/ijspp.2017-0318 |
| Popis: | PURPOSE: To examine the effect on short duration, high intensity cycling time trial performance when a semi-solid breakfast containing carbohydrate or a taste and texture matched placebo is ingested 90 minutes pre-exercise compared to a water control. METHODS: Thirteen well trained cyclists (25 ± 8 years, 71.1 ± 5.9 kg, 1.76 ± 0.04 m, 383 ± 46 Wmax, VO2peak 4.42 ± 0.53 L·min-1) performed three experimental trials examining breakfast ingestion 90 minutes before a 10 minute steady state cycle (60% Wmax) and a ~20 minute time trial (to complete a workload target of 376 ± 36 kJ). Subjects consumed either water (WAT), a semi-solid carbohydrate breakfast (2 g carbohydrate·kg-1 body mass; CHO) or a taste and texture matched placebo (PLA). Blood lactate and glucose concentrations were measured periodically throughout the rest and exercise periods. RESULTS: The time trial was completed quicker in CHO (1120 ± 69 s; P=0.006) and PLA (1112 ± 50 s; P=0.030) compared to WAT (1146 ± 74 s). Ingestion of carbohydrate caused an increase in blood glucose concentration throughout the rest period in CHO (peak at 30 minutes rest: 7.37 ± 1.10 mmol·l-1; P |
| Databáze: | OpenAIRE |
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