fat + metabolism Flashcards

1
Q

what are the benefits of fatty acid FA oxidation during exercise

A

allows for sustained PA and delays onset of glycogen depletion

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2
Q

how is adipose tissue lipolytic activity regulated

A

by hormones which stimulate or inhibit hormone - sensitive lipase

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3
Q

which hormone stimulates lipolytic activity

A

primary catecholamines - dopamine, adrenaline and noradrenaline

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4
Q

which hormone inhibits lipolytic activity

A

primary insulin

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5
Q

total fat utilised during exercise is largely made up of what?

A

intramuscular triglycerides

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6
Q

what factors affect fuel metabolism during exercise

A

mode/intensity/duration of exercise
training status
conc of various substances and hormones in plasma and muscles

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7
Q

consumption of CHO prior to exercise will result in what changes

A

increased dependence on CHO, lower dependance on fat, higher RER, lower plasma FFA conc

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8
Q

what is the result of a low CHO on metabolism during exercise

A

low CHO results in higher FFA conc at rest and during exercise, decreased insulin, glucagon, adrenaline and noradrenaline
increased growth hormone and cortisol

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9
Q

what effect does endurance training have on fat oxidation

A

increases fat oxidation during submaximal exercise
due to increased mitochondrial density
increased capillary density
increased fatty acid binding protein

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10
Q

trained subjects are more reliant on which metabolite

A

intramuscular triglycerides

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11
Q

potential benefits of high fat diets

A

increased circulating FFA
reduced glycogenolysis
increased fat utilisation reduced cho oxidation

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