EDKP 395 Lecture Notes - Lecture 4: Vo2 Max, Exercise Intensity, Glycogenolysis

• School: McGill University
• Department: Kinesiology&Physical Education
• Course: EDKP 395
• Professor: Russell T Hepple

Document Summary

Respiration exchange ratio: estimates the % contribution of cho or fats to energy metabolism, calculated at the ratio b/w carbon dioxide production (vco2) and rate of oxygen consumption (vo2) Both fats and carbs differ in their amount of o2 consumed and co2 produced during oxidation. Closer to 1- use more cho as energy source glycolytic energy source. Further from 1- use more fat stores: usage: Must reach a steady state of exercise. Only during steady state conditions are vco2 and. Vo2 relfective of o2 consumption and co2 production in the tissues. Rq- respiratory quotient: vcellco2/vcello2, will never exceed 1, results can reach a max of 1. 5 during intense exercises. Lactic acid (hla) is produced during glycolysis. Hla dissociates into la- and h+ causing an increase in acidity (acidosis, decrease in ph) In blood bicarbonate will combine w/ h+ to form carbonic acid. In the lung h2co3 dissociates into co2 + h2o.