KIN 105 Lecture Notes - Lecture 5: Catecholamine, Tachycardia, Diastole

• School: University of Waterloo
• Department: Kinesiology
• Course: KIN 105
• Professor: Christopher Vigna

Document Summary

Lecture 5 fick equation and determinants of vo2. Recall: to sustain all body functions there is a constant expenditure (usage) of atp. The production of atp requires consumption of foodstuffs (i. e. cho, fat and amino acids) and oxygen. This process results in the release of heat energy. The rate of heat production is directly proportional to energy expenditure and, therefore, metabolic rate. Direct calorimetry accurately quantifying energy expenditure by measuring heat production (released) Indirect calorimetry estimates energy expenditure by measuring the chemical by-products of metabolism (i. e. o2 consumption) Since there is a direct relationship between oxygen consumption and the amount of heat produced by the body, the measurement of oxygen consumption (vo2) provides an indirect, yet accurate estimate of whole body energy expenditure (direct calorimetry) Whole body oxygen consumption (also referred to as oxygen uptake) the volume of oxygen (vo2) that the whole body utilizes to produce atp in a given period of time.