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VCE PE 3&4 > SAC 2 Chapter 6-7 > Flashcards

SAC 2 Chapter 6-7 Flashcards

1
Q

What does LIP stand for?

A

Lactate inflection point

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2
Q

What is the definition of LIP?

A

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

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3
Q

What is the definition of lactate?

A

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

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4
Q

What is the definition of interplay?

A

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.

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5
Q

What is oxygen deficit?

A

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

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6
Q

What is steady state?

A

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

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7
Q

What is EPOC?

A

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

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8
Q

What are acute responses?

A

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

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9
Q

What is anaerobic glycolysis?

A

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

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10
Q

What are some examples of acute cardiovascular responses to exercise?

A

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

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11
Q

What are some examples of acute muscular responses to exercise?

A

Increased blood flow, increased lactate production

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12
Q

What are some examples of acute respiratory responses to exercise?

A

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

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13
Q

How do you calculate someone’s maximum heart rate?

A

220 - age

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14
Q

What energy system is dominant when LIP has been exceeded?

A

Anaerobic glycolysis

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15
Q

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

A

ATP-CP system, anaerobic glycolysis, aerobic glycolysis

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16
Q

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

A

Duration of activity, intensity of the exercise

17
Q

Outline 2 other factors which determine the energy system composition

A

Whether oxygen is present or not, available fuel sources

18
Q

What are the factors that affect oxygen uptake?

A

Body size, gender, age, genetics, training

VCE PE 3&4 (3 decks)

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