EXSS2028 Lecture Notes - Lecture 12: Lactate Threshold, Lactic Acid, Cardiorespiratory Fitness

• School: University of Sydney
• Department: Exercise and Sport Science
• Course: EXSS2028
• Professor: Kieron Rooney

Document Summary

Aerobic power: rate - power output in watts. Aerobic capacity: maximum capacity to perform the work - in watts. Individual vo2 max dependent on genetics, training status, gender - testosterone, responders vs. non responders to training) Vo2 max plateau: may or may not be present - Resistance training has little effect on vo2 max. Muscle mass has an effect on vo2 max - better cardiorespiratory response. Ability to perform without lactic acid/lactate accumulation - lactate threshold index. Hydrogen ions cause fatigue (from hydrolysis of atp > release of hydrogen ions) Index telling us about how much aerobic potential has been utilised. Point during exercise of increasing intensity where blood lactate begins to accumulate above resting levels. Lactate clearance/removal cant keep up with increasing production. Above the threshold, exercise will continue to increase the lactic acid build up - will decrease performance and causes fatigue. Also called anaerobic threshold, aerobic threshold, obla, maximal lactate steady state.