PMID- 18046054 OWN - NLM STAT- MEDLINE DCOM- 20071226 LR - 20191110 IS - 1526-484X (Print) IS - 1526-484X (Linking) VI - 17 IP - 5 DP - 2007 Oct TI - Carbohydrate-gel supplementation and endurance performance during intermittent high-intensity shuttle running. PG - 445-55 AB - The aim of this study was to investigate the effects of a carbohydrate (CHO) gel on performance after prolonged intermittent high-intensity shuttle running. Seven male soccer players performed 2 exercise trials, 7 d apart. On each occasion, participants completed five 15-min periods of intermittent variable-speed running, interspersed with periods of walking (Part A), followed by an intermittent run to exhaustion (Part B). Participants consumed either a CHO gel or placebo (PLA) immediately before exercise (0.89 mL/kg body mass [BM]) and every 15 min thereafter (0.35 mL/kg BM). In addition, water was consumed at a rate of 5 mL/kg BM before and 2 mL/kg BM every 15 min during exercise. Blood glucose levels were higher (P < 0.05) at 15, 30, and 60 min of exercise and at exhaustion in CHO than in PLA. During Part B, run time to exhaustion was longer (P < 0.05) in the CHO trial (CHO 6.1 +/- 1.3 min vs. PLA 4.2 +/- 1.2 min). These results indicate that ingesting a CHO gel, along with water, improves performance after prolonged intermittent running in healthy male subjects, possibly by maintaining blood glucose levels during exercise. FAU - Patterson, Stephen D AU - Patterson SD AD - School of Life Sciences, Napier University, Edinburgh, UK. FAU - Gray, Susan C AU - Gray SC LA - eng PT - Journal Article PT - Randomized Controlled Trial PL - United States TA - Int J Sport Nutr Exerc Metab JT - International journal of sport nutrition and exercise metabolism JID - 100939812 RN - 0 (Blood Glucose) RN - 0 (Carbohydrates) RN - 0 (Gels) SB - IM MH - Adult MH - Blood Glucose/*metabolism MH - Carbohydrates/*pharmacology MH - Cross-Over Studies MH - Dietary Supplements MH - Drinking/*physiology MH - Gels MH - Humans MH - Male MH - Oxygen Consumption MH - Physical Endurance/*drug effects/physiology MH - Running/*physiology MH - Time Factors EDAT- 2007/11/30 09:00 MHDA- 2007/12/27 09:00 CRDT- 2007/11/30 09:00 PHST- 2007/11/30 09:00 [pubmed] PHST- 2007/12/27 09:00 [medline] PHST- 2007/11/30 09:00 [entrez] AID - 10.1123/ijsnem.17.5.445 [doi] PST - ppublish SO - Int J Sport Nutr Exerc Metab. 2007 Oct;17(5):445-55. doi: 10.1123/ijsnem.17.5.445.