title: The effect of high carbohydrate meals with different glycemic indices on recovery of performance during prolonged intermittent high-intensity shuttle running.
abstract: This study examined the effect of high carbohydrate meals with different glycemic indices (GI) on recovery of performance during prolonged intermittent high-intensity shuttle running. Seven male semi-professional soccer players (age 23 +/- 2 y, body mass [BM] 73.7 +/- 9.0 kg and maximal oxygen uptake 58 +/- 1.0 mL x kg(-1) min(-1)) participated in two trials in a randomized cross-over design. On day 1, the subjects performed 90 min of an intermittent high-intensity shuttle running protocol [Loughborough Intermittent Shuttle Test (LIST)]. They then consumed a mixed high carbohydrate recovery diet (8 g/kg BM) consisting of either high (HGI) (GI: 70) or low (LGI) (GI: 35) GI foods. Twenty-two hours later (day 2) the subjects completed 75 min of the LIST (part A) followed by alternate sprinting and jogging to fatigue (part B). No differences were found between trials in time to fatigue (HGI 25.3 +/- 4.0 min vs. LGI 22.9 +/- 5.6 min, P = 0.649). Similarly, no differences were found between trials for sprint performance and distance covered during part B of the LIST. In conclusion, the GI of the diet during the 22 h recovery did not affect sprint and endurance performance the following day.
authors.affiliation: Medical Dept. of Tottenham Hotspur Football Club, Essex, London, UK.
authors.forename: Samuel
authors.initials: S
authors.lastname: Erith
authors.forename: Clyde
authors.initials: C
authors.lastname: Williams
authors.forename: Emma
authors.initials: E
authors.lastname: Stevenson
authors.forename: Siobhan
authors.initials: S
authors.lastname: Chamberlain
authors.forename: Pippa
authors.initials: P
authors.lastname: Crews
authors.forename: Ian
authors.initials: I
authors.lastname: Rushbury
mesh_terms: D000328:Adult; D019540:Area Under Curve; D001786:Blood Glucose / Q000032:analysis; D018592:Cross-Over Studies; D004040:Dietary Carbohydrates / Q000008:administration & dosage* / Q000145:classification / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D015444:Exercise / Q000502:physiology*; D005221:Fatigue; D005230:Fatty Acids, Nonesterified / Q000097:blood; D038321:Glycemic Index; D005990:Glycerol / Q000097:blood; D006801:Humans; D007328:Insulin / Q000097:blood; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology; D010807:Physical Endurance / Q000502:physiology; D005082:Physical Exertion / Q000502:physiology*; D012916:Soccer; D013647:Task Performance and Analysis
chemical_list: D001786:Blood Glucose; D004040:Dietary Carbohydrates; D005230:Fatty Acids, Nonesterified; D007328:Insulin; D005990:Glycerol