SAC 2 Chapter 6-7

Question 1

What does LIP stand for?

Answer 1

Lactate inflection point

Question 2

What is the definition of LIP?

Answer 2

The last point where lactate entry into the body and lactate removal from the blood is balanced.

Question 3

What is the definition of lactate?

Answer 3

Lactate is the combination of hydrogen ions released by anaerobic glycolysis, with sodium or potassium. It is a component of lactic acid.

Question 4

What is the definition of interplay?

Answer 4

The three energy systems working together to produce energy required for an activity, the contribution of each energy system is determined by the nature of the exercise being completed.

Question 5

What is oxygen deficit?

Answer 5

At the beginning of exercise, when oxygen uptake levels are not sufficient to be met aerobically so the anaerobic system contributes an increased amount

Question 6

What is steady state?

Answer 6

The period in which oxygen supply is equal to oxygen demand and ATP requirements are met largely aerobically

Question 7

What is EPOC?

Answer 7

The oxygen supply is much greater than the required oxygen demand for ATP production. This elevated oxygen uptake is utilised by the aerobic energy system create lactate and H+ ions and replenish muscle stores of ATP and PC

Question 8

What are acute responses?

Answer 8

An immediate response to exercise that occurs in either respiratory, cardiovascular or muscular systems.

Question 9

What is anaerobic glycolysis?

Answer 9

The production of energy using glycogen without the presence of oxygen.

Question 10

What are some examples of acute cardiovascular responses to exercise?

Answer 10

Increased heart rate, increased cardiac output, redistribution of blood flow

Question 11

What are some examples of acute muscular responses to exercise?

Answer 11

Increased blood flow, increased lactate production

Question 12

What are some examples of acute respiratory responses to exercise?

Answer 12

Increased respiratory rate, increased tidal volume, increased ventilation, increased gas exchange

Question 13

How do you calculate someone’s maximum heart rate?

Answer 13

220 - age

Question 14

What energy system is dominant when LIP has been exceeded?

Answer 14

Anaerobic glycolysis

Question 15

What energy systems are present in a 400m run and in which order?

Answer 15

ATP-CP system, anaerobic glycolysis, aerobic glycolysis

Question 16

All three energy systems are activated at the start of exercise, what are the 2 factors that determine their relative contribution?

Answer 16

Duration of activity, intensity of the exercise

Question 17

Outline 2 other factors which determine the energy system composition

Answer 17

Whether oxygen is present or not, available fuel sources

Question 18

What are the factors that affect oxygen uptake?

Answer 18

Body size, gender, age, genetics, training