EXSS2021 Lecture Notes - Lecture 12: Endurance Training, Exercise Intensity, Joule

• School: University of Sydney
• Department: Exercise and Sport Science
• Course: EXSS2021
• Professor: Helen O'Connor

Document Summary

Amino acids: carboxylic group, amino group & r group (which makes each aa different) Measuring protein needs: there is lots of nitrogen loss (in urine, faeces & dermal, depicts how much goes in/out and where is all goes! Dietary protein requirements of athletes: lecture 12: decrease activation by, cho loading/ingestion during exercise (counterproductive to oxidise proteins, since they serve either a structural/functional role, preserves muscle protein. How much protein is used in endurance exercise: most energy comes from cho & lipid oxidation, ~3-6% energy comes from aa during endurance exercise (can be higher with greater exercise e. g. tour de france) Protein metabolism & et: endurance training decreases leucine oxidation, probably due to enhanced lipid use & glycogen sparing. Novice vs. untrained: untrained have bigger protein synthesis and breakdown with training; need more protein than well trained, novice (untrained) will have greater ps with enough aa. Increase in 0. 25-0. 5kg/week is possible, but depends on genetics & training history.