CH 8 Flashcards
Metabolism
is defined as the chemical reactions occurring inside the body that allows the body to maintain life.
Fats are the main sources of energy during
these low intensity times,
during activity when things are ramping up in intensity
we see a shift in starting to mainly use glucose for energy.
Ketone bodies are used to refer to the molecules of
acetone, acetoacetic acid, and beta-hydroxybutyric acid
Ketone levels will increase in the body in these ways
By restricting overall calories to very low levels
By following very low-carbohydrate diets
By consuming exogenous ketones
When there is a lack of insulin produced (type 1 diabetes) or substantial insulin resistance (type 2 diabetes)
The first 10 – 15 seconds of activity has
the ATP-PC system providing the majority of the energy, due to it being the quickest and for the powerful moves.relies on creatine that we store in the muscles.
The glycolytic system is used as the primary system for
30 – 60 seconds of activity, with the possibility to extend this by some training over time.
It is present for activities that are endurance.
The oxidative system is the system that uses oxygen to make energy for us, and it also uses fats in the body or through the diet to make energy.
At the higher intensities,
carbs will be providing the majority of energy for the making of ATP
Lower intensities will have
the fats being the main source of energy.
1 calorie
is the amount of energy that is required to raise the temperature of 1 kg of water by one degree Celsius.
Resting metabolic rate
is the number of calories that we use to just function at rest. This represents about 60 – 75% of the total daily energy expenditure.
The thermic effect of food
is the number of calories that we need to break down the components of a meal. This represents about 10% of the total daily expenditure.
thermogenesis,
and it represents 15 – 30% of the total daily expenditure. This is simply the calories burned during the day due to simple activity or exercise.
