U3 AOS2 - Energy Systems & Acute Responses

Question 1

Acute responses

Answer 1

are the body’s immediate short-term responses to physical activity that last only for the duration of the training or exercise session and for a short time period (recovery) afterwards.

Question 2

Heart rate

Answer 2

the number of times the heart beats per minute

Question 3

Resting HR

Answer 3

the number of times the heart beats per minute while the body is at rest

Question 4

Max heart rate

Answer 4

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achieved in all out effort to point of exhaustion

Question 5

Anticipatory responses

Answer 5

when heart rate rises above resting levels just before the start of exercise.

Question 6

Stroke volume (SV)

Answer 6

is the amount of blood ejected from the left ventricle with each contraction

Question 7

Vasodilation

Answer 7

when blood vessels widen in response to the increased demand for oxygen by the working muscles

Question 8

Cardiac output (Q)

Answer 8

the amount of blood pumped out of the heart per minute.

Question 9

Respiratory rate (RR)

Answer 9

number of breaths taken per minute

Question 10

Tidal volume (TV)

Answer 10

is the amount or air inhaled and exhaled in one breath

Question 10

Ventilation
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Answer 10

The amount of air being breathed in and out per minute.

Question 11

Pulmonary diffusion

Answer 11

The movement of oxygen from the alveoli into the capillaries and that of carbon dioxide from the capillaries into the alveoli.

Question 12

Oxygen uptake (VO2)

Answer 12

is the amount of oxygen transported to, taken up and used by the body for energy production.

Question 13

Maximum oxygen uptake (VO2 max)

Answer 13

is the maximum amount of oxygen per minute that can be transported to, taken up and used by the body for energy production.

Question 14

Oxygen deficit

Answer 14

oxygen demand is higher than oxygen supply

Question 15

Steady State

Answer 15

oxygen demand equals oxygen supply

Question 16

cardiac output (Q) FORMULA

Answer 16

Q = Heart rate (HR) x stroke volume (SV)

Question 17

O2 Pulse

Answer 17

Amount of oxygen ejected per heart-beat. Similar to stroke volume but measuring oxygen circulation, not blood circulation.

Question 18

diffusion

Answer 18

molecules moving from high concentration areas to low concentration areas.

Question 19

whats ATP

Answer 19

the molecule that splits to give energy for muscular contractions.

Question 20

whats PC

Answer 20

a fuel that helps to resynthesise ATP

Question 21

aVO2 difference

Answer 21

the difference in O2 content between arterial and venous blood.

Question 22

avo2 difference measures what

Answer 22

the extent to which O2 is utilised by the muscle