Nutrition for physical activity
What is the RDA range of protein for an athlete?
1.2 - 1.8 g/kg
What is the 1st law of thermodynamics
Energy can not be created nor destroyed
Describe an exergonic reaction
Releases energy (catabolic)
Decreasing free energy in the product
What are 2 hormones that mobilize free fatty acids
Epi/Norepinephrine
Glucagon
Growth Hormone
What is the RDA range for carbohydrates?
6 - 10 g/kg
How many calories per gram do we get from protein metabolism?
5.65 kcal/g
Describe the 3 pathways for lactate after it is produced
Oxidized by the same muscle cell
Shuttled to the liver for gluconeogenesis
Shuttled into a nearby Type I fiber and oxidized
What type of reaction causes a loss of an electron
Oxidation
What is the recommended percentage of carb/electrolyte in a "Gatorade" beverage?
5 - 8%
Describe the mass balance model and how it would apply to weight loss
Mass of food matters more than energy balance due to coefficient of digestibility. It stresses that macronutrient composition matters more for weight loss
Describe the process of oxidative phosphorylation.
Synthesize ATP from ADP using energy generated in the ETC from NADH and FADH2 using oxygen and H+ gradient by ATP Synthase.
Explain respiratory exchange ratio (RER) and why it ranges from 0.70 - 1.1
0.7 = fat breakdown (use more oxygen)
increased intensity uses more carbohydrates.... 1.0
H+ buffering increases CO2 above 1.0