Energy Systems Flashcards
ATP
adenosine triphosphate
limiting factors of lactic acid system
glycogen stores are limited, rapid use of glycogen to make ATP produces lactic acid
lactic acid system used for
weight training or sprinting
lactic acid (anaerobic system)
glycogen stored in muscle is broken down to remake ATP sans o2
provides energy for 1-3 minutes
anaerobix
without o2
how long does it take to regenerate creatine phosphate
2+ mins
limiting factor of CP system
levels of CP are low
PC system is predominant for
explosive sports
Pc system
phosphate bond is broken down and used to resynthesize ATP
-used for instantaneous bursts of energy
creatine phosphate
high energy compound stored in muscle
3 energy system
Phosphocreatine System, anaerobic/lactic acid system, aerobic system
protein
small contribution to energy production, provides energy at a slower rate than carbs
fats stored as
triglycerides
carbs
form of glucose
body’s preferred source of food energy
breakdown of glycogen stored in muscles and liver cells
where does energy come from
carbs, fats and proteins
only enough energy in ATP for
4 seconds
ATP loses a phosphate
energy is releases and heat is given up, leaves behind ADP, breakdown to resynthesize ATP
if lactic acid production exceeds removal
muscles become fatigues and muscle contraction is impeded
how to reduce lactic acid
reduce intensity to allow o2 to be available to muscles, allows LA to be transported to liver
LA is converted in liver to
glucose
aerobic system
re-synthesizes ATP with o2 and fatty acids
amino acids can also be used when carb stores are low
where does aerobic energy production take place
mitochondria
byproducts of aerobic system
sweat and co2
which fuel is best for high intensity
carbs
which fuel for low intensity and endurance
fat
Food breakdown into energy
food > digestion > absorbed into blood > transported > active cells > immediate use
carb breakdown into energy
carb >glucose > stored as glycogen > ATP
fat breakdown into energy
fat > fatty acids > stored as adipose tissue > ATP
protein breakdown into energy
protein > amino acids > growth and repair of tissues (stored as fat) > ATP
what are the waste products of the CP system
none
