the energy currency of the cell and the fuel for all processes within cells requiring energy
ATP
List the pathways that ATP can be resynthesized (there are 4):
Phosphocreatine system, anaerobic glycolysis, aerobic glycolysis, oxidative phosphorlation
What are factors that determine Fuel Source:
exercise intensity, duration, composition of diet, level of training
plasma glucose
what is a motor unit: single nerve and the muscle fiber group that it innervates
- what is a Muscle fiber:
muscle cell
- also known as the fast twitch muscles:
type 2 muscle fibers
- also known as the slow twitch muscles:
type 1 muscle fibers
the molecule in the blood responsible for transport of oxygen to the working muscle.
hemoglobin
accepts the exchange of oxygen from hemoglobin and delivers it to the mitochondria for use of aerobic metabolism in muscle
hemoglobin:
what is a normal heart rate range:
60-100 beats per min
heart rate that is greater than 100bpm
tachycardia:
heart rate that is less than 60 bpm
bradycardia:
1Stroke volume:
amount of blood in volume pumped during one beat of the heart
cardiac output:
heart rate X stroke volume
respiratory quotient:
ratio of carbon dioxide produced to oxygen consumed measured through respirometry
what type of fuel is used in low intensity very long duration exercise?
fat
what type of fuel source is used during high intensity exercise <1min dura- tion:
ATP/PC 100% for the first few seconds and then ATP/PC/Anaerobic glycolysis
moderate intensity exercise uses what type of fuel source?: aerobic metabolism
Muscle glycogen: major carb source in the body (300-400g
1200-1600kcal)
liver glycogen: 75-100g or 300-400kcal
blood glucose contribution: 5g or 20kcal
what is the result of long term fatigue
glycogen depletion: hitting the wall
Exchange System: starch: 80kcal
15g carb
