Kinesiology 2230A/B Chapter Notes - Chapter 2: Endurance Training, Creatine Kinase, Pyruvic Acid
27 Oct 2014
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Chapter 2 - fuel for exercise: bioenergetics and muscle. All energy originates from the sun photosynthesis in plants, animals eat. All the chemical reactions in the body. Carbohydrates, fats and proteins are the nutrient sources in plants, humans eat animals and/or plants food substrate into available energy for the body. 1 calorie is a unit of energy, the amount of energy needed to raises 1g of water by 1 degree, sometimes used interchangeably with kilocalorie which is 1000cals. Every cell containing chemical pathways to convert these. Release of energy occurs when chemical bonds are broken. Substrates are composed of carbon, hydrogen and oxygen and protein. Food is not used directly for cell energy but indirectly to break molecular contains nitrogen as well bonds and form atp. Fats and carbs provide much of the body"s energy at rest. Proteins serve as enzymes and building blocks but provide little energy. Carbohydrates during metabolism can then be transported throughout the body tissues.
