Kinesiology 2230A/B Lecture Notes - Lecture 1: Endergonic Reaction, Exergonic Reaction, Cellular Respiration
20 Mar 2017
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2/5/2017 6:59:00 pm: potential to do work, produces heat, measured in kcals or joules, 1 kcal = 4. 2 kjoules, 1 kcal = amount of energy needed to raise the temperature of 1kg of water 1c at 15c. Efficiency during exercise: 70-80% of energy used in our bodies is released as heat, at rest all metabolic processes result in 37c heat production, muscle contraction exothermic chemical reactions (release energy) Nutritional sources of energy: cho, fat & protein composed of carbon, hydrogen & oxygen, hydrogen is critical for energy production, more h"s more energy, cho most readily available, stored in muscle & liver. Energy metabolism: total energy demand + rate of demand primary factors affecting energy production, generate highest amount of power in the shortest duration of time, as duration increases, power output decreases. Cho & vs fat: cho 5. 05 kcals / lo2. 4. 1 kcals / gram: fats 4. 69 kcals / lo2.
