fat + metabolism Flashcards
what are the benefits of fatty acid FA oxidation during exercise
allows for sustained PA and delays onset of glycogen depletion
how is adipose tissue lipolytic activity regulated
by hormones which stimulate or inhibit hormone - sensitive lipase
which hormone stimulates lipolytic activity
primary catecholamines - dopamine, adrenaline and noradrenaline
which hormone inhibits lipolytic activity
primary insulin
total fat utilised during exercise is largely made up of what?
intramuscular triglycerides
what factors affect fuel metabolism during exercise
mode/intensity/duration of exercise
training status
conc of various substances and hormones in plasma and muscles
consumption of CHO prior to exercise will result in what changes
increased dependence on CHO, lower dependance on fat, higher RER, lower plasma FFA conc
what is the result of a low CHO on metabolism during exercise
low CHO results in higher FFA conc at rest and during exercise, decreased insulin, glucagon, adrenaline and noradrenaline
increased growth hormone and cortisol
what effect does endurance training have on fat oxidation
increases fat oxidation during submaximal exercise
due to increased mitochondrial density
increased capillary density
increased fatty acid binding protein
trained subjects are more reliant on which metabolite
intramuscular triglycerides
potential benefits of high fat diets
increased circulating FFA
reduced glycogenolysis
increased fat utilisation reduced cho oxidation
