lecture 2A - bioenergetics of resistance training Flashcards
what are the 3 main energy systems
phosphagen system, glycolysis system, oxidative system
what is the goal of the phosphagen system
produce ATP as fast as possible to produce greatest energy
state activities fueled by the ATP system
weightlifting, shotput, high jump
what is the law of mass action
whatever side has more molecules, it works in the opposite direction to maintain equilibrium
define the term ‘glycolysis’
breakdown of carbs stored in muscles or glucose delivered in blood to resynthesises ATP
what is the consequence of the glycolysis system
lactic acid buildup
state sports that are fueled by the glycolysis system
boxing, MMA, team sports, swimming
how is the glycolysis system fueled
by blood glucose or muscle glycogen which forms phosphofructokinase which forms pyruvate which then forms Acetyl CoA and into the kreb’s cycle
how many ATP molecules are formed from blood glucose
net 2 ATP molecules
how many ATP molecules are formed from muscle glycogen
net 3 ATP molecules
what occurs in the cori cycle
lactate is moved into the blood by the bloodstream which forms glucose
describe what stimulates glycolysis
high concentrations of ADP. Pi and ammonia
describe what inhibits glycolysis
lower pH, ATP, CP, citrate and FFA
what occurs during fat oxidation
triglycerides broken down to glycerol and 3 FA, which is then made into acetyl coa and hydrogen protons
what occurs during protein oxidation
protein is broken down to form amino acids which forms glucose, pyruvate or Kreb’s intermediates to produce ATP
what does ATP production depend on
primarily on intensity of muscular activity and secondarily on duration
how long does it take for creatine phosphate to fully recoup
8 minutes
what are the bioenergetic limiting factors of the aerobic energy system
glycogen (muscle and liver)
what are the bioenergetic limiting factors for high intensity exercise
stored creatine, phosphate, ATP and pH level
