Biology 105
Biology of Exercise
Spring 2003

2/26/03 - Pre-class outline

Learning objectives:

How do diets and supplements affect different types of exercise?

Are all muscle fibers the same? How do they differ?

 

Diagrams.

• Anaerobic and aerobic metabolism during sustained exercise
• Table of energy metabolism

Effect of creatine on exercise performance

Effect of carbo-loading on exercise performance

Effect of caffeine on exercise performance

• Amount of caffeine in drinks:
  • Coffee - 50-150 mg (depending on preparation)
  • Tea - 10-50 mg
  • Mountain Dew (12 oz) 54 mg
  • Coca-Cola (12 oz) 46 mg
• High levels (12 micrograms / ml in blood) are banned by the International Olympic Committee
• Effects
  • Increased activity in skeletal muscle and nervous system - increased Calcium availability?
  • Increased mobilization of fuels, especially breakdown of fats
• Effects on endurance
• Chronic users show different effects than non-users.