title: Effect of whey protein- and carbohydrate-enriched diet on glycogen resynthesis during the first 48 h after a soccer game.
abstract: The effect of a whey protein- and carbohydrate (CHO)-enriched diet on the rate of muscle glycogen resynthesis after a soccer match was examined. Sixteen elite soccer players were randomly assigned to a group ingesting a diet rich in carbohydrates and whey protein [CHO, protein, and fat content was 71, 21, and 8E%, respectively; high content of carbohydrates and whey protein (HCP), n = 9] or a group ingesting a normal diet (55, 18, and 26E%; control [CON], n = 7) during a 48-h recovery period after a soccer match. CON and three additional players carried out a 90- and 60-min simulated match without body contacts (SIM90 and SIM60). Muscle glycogen was lowered (P < 0.05) by 54, 48, 53, and 38% after the matches in CON, HCP, SIM90, and SIM60, respectively. Glycogen resynthesis during the first 48 h after the match was not different between CON and HCP, whereas glycogen resynthesis was slower (P < 0.05) during the first 24 h after SIM60 than SIM90 (2.88 ± 0.84 vs 4.32 ± 0.54 mmol/kg dw/h). In HCP, glycogen content in type II muscle fibers was still lowered 48 h after the match. In conclusion, glycogen resynthesis 48 h after a soccer match is not elevated by ingestion of a HCP diet. Furthermore, glycogen resynthesis does not appear to be impaired by body contacts during a match.
authors: Department of Exercise and Sport Sciences, Section of Human Physiology, University of Copenhagen, Copenhagen, Denmark.
authors: T P
authors: TP
authors: Gunnarsson
authors: M
authors: M
authors: Bendiksen
authors: R
authors: R
authors: Bischoff
authors: P M
authors: PM
authors: Christensen
authors: B
authors: B
authors: Lesivig
authors: K
authors: K
authors: Madsen
authors: F
authors: F
authors: Stephens
authors: P
authors: P
authors: Greenhaff
authors: P
authors: P
authors: Krustrup
authors: J
authors: J
authors: Bangsbo
mesh_terms: D000328:Adult; D003402:Creatine Kinase / Q000097:blood / Q000187:drug effects; D004040:Dietary Carbohydrates / Q000494:pharmacology*; D004041:Dietary Fats / Q000494:pharmacology*; D006003:Glycogen / Q000096:biosynthesis* / Q000378:metabolism; D006801:Humans; D008297:Male; D008894:Milk Proteins / Q000494:pharmacology*; D018482:Muscle, Skeletal / Q000187:drug effects* / Q000378:metabolism / Q000502:physiology; D009211:Myoglobin / Q000097:blood / Q000187:drug effects; D010807:Physical Endurance / Q000502:physiology; D012916:Soccer / Q000502:physiology; D000067816:Whey Proteins; D055815:Young Adult
chemical_list: D004040:Dietary Carbohydrates; D004041:Dietary Fats; D008894:Milk Proteins; D009211:Myoglobin; D000067816:Whey Proteins; D006003:Glycogen; D003402:Creatine Kinase