Mod 2.2 Understanding energy systems and energy balance

Question 1

To resynthesize ATP the body uses which 3 energy systems?

1) PCr
2) AnS
3) AeS

Answer 1

1) Phosphocreatine system (PCr)
2) Anaerobic system
3) Aerobic system

Question 2

PCr lasts for roughly how long?

Answer 2

Less than 10 seconds

Question 3

Is the PCr system aerobic or anaerobic?

Answer 3

Anaerobic process (no O2)

Question 4

Basic formula of the PCr system

Answer 4

ADP (adenosine diphosphate) + CP (creatine phosphate) < —– > ATP + Creatine

Question 5

What’s another term for the anaerobic system?

Answer 5

Anaerobic glycolysis

Question 6

Primary fuel source of the AnS ?

Answer 6

CHO - Carbs

Question 7

The AnS provides energy for prolonged high intensity exercise between what times frames?

Answer 7

10s - 3 mins

Question 8

What are some by-products of the AnS?

Answer 8

Lactate and increase of hydrogen ions = + acidity

Question 9

Primary fuel sources of the AeS?

Answer 9

CHO and Fat (pro can be used too)

Question 10

The Aes provides energy for low to moderate activities, what is the timeframe?

Answer 10

Almost unlimited!

Question 11

What are some by-products of the Aes?

Answer 11

Carbon dioxide and water

Question 12

What is the name of the cycle used in the aerobic system?

Answer 12

Krebs cycle

Question 13

How many ATP do each of the following create?

ATP-CP =
Lactic acid =
Aerobic =

Answer 13

ATP-CP = 1
Lactic acid = 2
Aerobic = 38

Question 14

What is another name for the AnS ?

Answer 14

Lactic acid system

Question 15

What is the first law of thermodynamics?

Answer 15

Energy cannot be created or destroyed only modified in form

Question 16

Is energy balance a static or dynamic process?

Answer 16

Dynamic - it’s always happening

Question 17

The following make up what rough percent of TDEE?

BMR =
NEAT =
TEF =
EEE =

Answer 17

BMR = 70%
NEAT = 15%
TEF = 10%
EEE = 5%

Question 18

What are some example population groups where BMR would be outside the norm/what would be expected?

Answer 18

Those with:

PCOS
Hypothyroidism