Energy Systems

Question 1

Role of atp

Answer 1

Provides energy for all movements

Stored as ATP and broken down into ADP to release energy by atpase

Question 2

ATP/pc system fact file

Answer 2

Fuel : PC
Site of reaction: sarcoplasm
Enzyme used : creatine kinase
Energy yield: 1:1
Duration: 0-10 seconds

Question 3

Atp pc system (E)

Answer 3

Pros

No delay for 02
No wasteful by products

Cons

Low energy yield
Shirt duration

Question 4

Lactic acid system process

Answer 4

1)Glycogen broken down into glucose 6 phosphate

2)Broken down into pyruvic acid with aid of PFK

3)Gain 2 ATP from glycolysis

4)Insufficient 02 converted with fermentation to form LA

Question 5

LA system (E)

Answer 5

Pros

High intensity energy
No 02 delay

Cons

Fatiguing by product
Short duration

Question 6

Lactic acid fact file

Answer 6

Fuel source - glycogen
Energy yield -1:2
LA fatiguing by product
Enzyme - PFK

Question 7

Aerobic system process

Answer 7

1) glycolysis- glucose into g6p - into pyruvic acid using PFK +2 ATP gain

Sufficient o2 (differs to LA)

2) pyruvic acid into acetyl CO enzyme A

3) forms citric acid carries us into Krebs cycle

4) Krebs cycle + 2 ATP release c02 and hydrogen ions

5) ETC strips hydrogen of its electrons and creates 34ATP and produces h20

Question 8

Aerobic system fact file

Answer 8

Fuel source : glycogen
Energy yield : 1:38
No fatiguing by products
Duration- infinite

Question 9

Aerobic system (E)

Answer 9

Pros

Long duration
High energy yield
No fatiguing by products

Cons

Moderate intensity
Delay for 02

Question 10

OBLA

Answer 10

Onset of blood lactate accumulation

Rapid accumulation of blood lactate

Untrained - OBLA achieved at lower intensity

Trained - OBLA achieved at higher levels of training intensity

Increase in v02 max will delay OBLA

Question 11

V02 max

Answer 11

Maximum amount of 02 that can be consumed in 1 minute

Zone of v02 max is hit then movement is powered aneorobically leading to fatigue

Question 12

V02 max factors affecting

Answer 12

Physiological

Capillary density
Mitochondria
Muscle fibre types

Training

Aerobic training
Continuous training
Fartlek

Gender

Male

Lifestyle

Smoking
Exercise

Question 13

Energy continuum

Answer 13

Relative contribution of all the energy systems to resynthesize ATP at the same time

The way in which we see the contribution of the energy systems is the intensity and duration of the task at hand

Question 14

Recovery from exercise

Answer 14

02 deficit - Q of oxygen used if it were available

EPOC- Q of oxygen consumed post exercise over and above resting levels

Question 15

EPOC

Answer 15

Fast

Uses 02 consumed to resturate myoglobin and ATP stores

Slow

Removal of LA and resythesized into pyruvate to skip glycolysis