Guest guest Posted October 2, 2008 Report Share Posted October 2, 2008 Some key notes regarding sports nutrition: The 2008 Pre-Olympic Conference on Science, Education and Medicine in Sport Patria A Hume1, D Kara2, Liesel Geertsema3 and Celeste Geertsema4 Sportscience 12, 31-40, 2008 (sportsci.org/2008/pah.htm) Sports Nutrition Ron Maughan (Loughborough University, UK) chaired the sports nutrition symposium that included speakers Shirreffs (Loughborough) and Wong (Chinese University of Hong Kong). Although no new information was presented the following summarizes the content from the presentations: • The Maughan Rule to supplementation is " if it works then it is probably banned, and if it is not banned then it probably does not work! " • Athletes can obtain their nutritional requirements from a balanced diet ensuring that the essentials of carbohydrate, protein, fat, vitamins, minerals, fiber and water are attended to. • Carbohydrate intake guidelines of 5-7 g/kg body mass in moderate training and up to 10 g/kg during heavy training. • Protein intakes >1.7 g/kg/day are not necessary. • Energy intake is best measured by monitoring body weight and skin folds. • Acute post-exercise creatine supplementation and high carbohydrate intake increases muscle glycogen at three and six days post exercise. • 2% body mass loss (as a measure of hydration status) is the level above which detrimental performance effects will occur, but this figure may be less if heat is involved. (especially temperature >30ºC) • Replace fluid losses at 150% of weight loss. (We note that this percentage is contentious given the possible risk of hyponatremia). • The effectiveness of fluid replacement is improved with higher concentrations of Na+, which can be obtained from rehydration fluids (although Na+ concentration is limited by palatability) or food. K+ concentration is not an issue. • Individualize fluid and recovery regimens • Pre-match meals consisting of low glycemic index foods sustain carbohydrate availability and maintain blood glucose levels during exercise. • Post-game glycogen repletion is best achieved with high-glycemic index foods. =================== Carruthers Wakefield, UK Quote Link to comment Share on other sites More sharing options...
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