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dc.contributor.authorTarpey, Michael
dc.contributor.authorRoberts, Justin
dc.contributor.authorKass, Lindsy
dc.contributor.authorTarpey, Richard
dc.contributor.authorRoberts, Michael
dc.identifier.citationTarpey , M , Roberts , J , Kass , L , Tarpey , R & Roberts , M 2013 , ' The ingestion of protein with a maltodextrin and fructose beverage on substrate utilisation and exercise performance ' , Applied Physiology, Nutrition, and Metabolism , vol. 38 , no. 12 , pp. 1245-1253 .
dc.identifier.otherPURE: 811802
dc.identifier.otherPURE UUID: c894727d-90c0-45fa-87fb-0cce425d2ad4
dc.identifier.otherScopus: 84887158836
dc.description.abstractThe study investigated the ingestion of maltodextrin, fructose and protein on exogenous carbohydrate oxidation (CHOEXO) and exercise performance. Seven trained cyclists/triathletes (VO2max: 59.20 ± 9.00 ml •kg-1•min-1) performed three exercise trials consisting of 150 minutes cycling at 50 % Wmax (160 ± 11 W), followed by a 60 km time trial (TT). One of three beverages were randomly assigned during each trial and consumed at 15 minute intervals: (1) 0.84 g•min-1 maltodextrin + 0.52 g•min-1 fructose + 0.34 g•min-1 protein (MD+F+P), (2) 1.10 g•min-1 maltodextrin + 0.60 g•min-1 fructose (MD+F) or (3) 1.70 g•min-1 maltodextrin (MD). CHOEXO and fuel utilisation were assessed via measurement of expired air 13C content and indirect calorimetry, respectively. Mean total CHO oxidation (CHOTOT) rates were 2.35 ± 0.18, 2.76 ± 0.08 and 2.61 ± 0.17 gmin-1 with MD, MD+F, MD+F+P, respectively, although not significantly different. Peak CHOEXO rates with MD+F were significant greater by 41.4 % (P=0.001) and 45.4 % (P=0.0001) compared to MD+F+P and MD, respectively (1.57 ± 0.22 g•min-1, 1.11 ± 0.08 g•min-1 and 1.08 ± 0.11 g•min-1, respectively). Performance times were 2.2 % and 5.0 % faster with MD+F compared to MD+F+P and MD, respectively, however were not statistically significant. Ingestion of a MD-fructose-protein commercial sports beverage significantly reduced peak and mean CHOEXO rates compared to MD+F, but did not significantly influence CHOTOT. The addition of protein to a MD+F beverage did not enhance performance times.en
dc.relation.ispartofApplied Physiology, Nutrition, and Metabolism
dc.titleThe ingestion of protein with a maltodextrin and fructose beverage on substrate utilisation and exercise performanceen
dc.contributor.institutionDepartment of Human and Environmental Sciences
dc.contributor.institutionHealth & Human Sciences Research Institute
dc.contributor.institutionSchool of Life and Medical Sciences
dc.contributor.institutionSports Sciences
dc.contributor.institutionAgriculture, Veterinary and Food Sciences
dc.contributor.institutionPsychology of Movement
dc.contributor.institutionSport, Health and Exercise
dc.contributor.institutionAdaptive Physiology and Functional Nutrition
dc.contributor.institutionHealth and Wellbeing
dc.contributor.institutionWeight and Obesity Research Group
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Life and Medical Sciences
rioxxterms.typeJournal Article/Review

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